Digital device for measuring transport lateness of signal in communication equipment and technology

FIELD: measuring equipment.

SUBSTANCE: device has harmonic signals generator, synchronization pulse generator, counter, rectangular pulse generator, key, quadrature demodulator block, digital block for adjusting synchronization phase, analog-digital generator of tone frequencies signals, three ADC, three buffer registers, three digital filters, five multiplexers for temporal division, six arithmetical subtracter-adders, six arithmetical multiplication blocks with accumulation, microprocessor set with input and output data registers, data processing block, micro-programmed control block and synchronous pulse generator and indication block.

EFFECT: higher precision, higher efficiency, broader functional capabilities.

1 dwg

 

The invention relates to communication technology, such as technology and practice of measurement in a circuit-switched channels of information transmission networks.

Multi-frequency broadband signal passing through the circuit-switched communication channels, distorted, because different frequency components are delayed by different times. A significant disadvantage of the known circuits digital phasemeter [1. Metrology, standardization and measurements in communications technology. Edited by B.P. Lame. Moscow, Radio I Svyaz, 1986] is a great time of measurement, depending on the frequency of the analyzed signal, the transition process of the test channel and the limited accuracy in the presence of industrial interference.

It is known device [2. Auth. the certificate of USSR No. 1609328 (TM), G 06 G 7 / 19th, G 01 R 25/00, publ. 23.12.1988,], which determines the phase shift of the two harmonic signals, such as voice frequency signals in telephony with arbitrary sample rate and frequency. Improving the accuracy of measuring the phase characteristics of the complex, in the General case of nonlinear components of communication equipment is achieved by the fact that there is no need to scale the step of sampling the signals at the output of the two analog-to-digital converters (ADC), to determine the corner frequency ω studied harmonic signals. The measurement accuracy of the phase shift increases by eliminating arithmetic nl the Cove calculation and storage of the sinuses, cosines and scaling, as well as the appropriate choice of measurement interval, which may be adaptive, which increases the noise immunity. The disadvantages of these devices include restrictions on the form of the test signal. In addition, it cannot be applied to other modulation types.

Closest to the proposed device for the adaptive adjustment of the parameters of the dynamic characteristics of complex nonlinear and non-stationary radio systems that contain electronic components with both analog and digital signals [3. Pat. Russia №2187140, G 05 B 13/00, H 03 D 3/02, publ. 10.08.2002,] that contains the generator of the harmonic signals of the reference frequency reference pulse shaper synchronization counter, square wave pulser, digital control of phase synchronization, the output of which is connected to the reference input of the phase generator of rectangular pulses, the output of which is connected through the key signal to the information input of the quadrature demodulator, the first generator output harmonic signals of the reference frequency is connected with the first common-mode input quadrature demodulator and a pulse shaper connected to the input of the counter, while the second generator output harmonic signals of the reference frequency is connected with the second input of the quadrature demodulator, in formazione inputs of the first and second buffer registers are measurement inputs for connection respectively to the outputs of the first and second ADC, the first and second digital IIR filters connected to the outputs of the first and second buffer registers, respectively, the inputs of the first and second multiplexer connected to the first, second and third outputs of the respective digital IIR filters, and the outputs of the first and second multiplexer to the input of arithmetic adders-vychitala, the first control output of the microprocessor kit is connected to the reset input in the initial state of the digital control unit of the synchronization phase, the second input is connected to the second control output of the microprocessor package, the output of the pulse shaper is connected to the synchronization input of microprocessor kit, the total output synchronization which is connected to the corresponding inputs of the synchronization buffer registers, IIR filters, multiplexers and arithmetic adders-vychitala, third, fourth and fifth control outputs of the microprocessor sets connected with corrective inputs of the first digital IIR filter, sixth, seventh and eighth control outputs of the microprocessor sets connected with appropriate corrective inputs of the second digital IIR filter, the ninth control output of the microprocessor kit is connected to the control input of the display unit.

The disadvantages of this device can what about attributed to random measurement error of the transportation lag eTSsignals on a limited observation interval, for example, online diagnostics and commissioning of complex radio systems, in normal operation when exposed to industrial noise General form, including pulse; unsteady on the observation interval, etc. This error in the known device, selected as a prototype, decreases the optimal choice and correction of digital IIR filters, however, when the reduction ratio of useful signal to noise becomes noticeable for engineering practice.

The present invention is directed to improving the accuracy of measurement of the transport delay of signals in technology and communication technology. Technical result achieved when this task is complete compensation of the random error of measurement of the sign and magnitude of ±τT*for example, for a signal tone frequencies, and signals with other types of modulation such as PCM.

This is achieved by the fact that in the known device, comprising a generator of harmonic signals of the reference frequency reference pulse shaper synchronization counter, square wave pulser, digital control of phase synchronization, the output of which is connected to the reference input of the phase of the square wave pulser, o is d through which the key is connected to the signal information input quadrature demodulator, the first generator output harmonic signals of the reference frequency is connected with the first common-mode input quadrature demodulator and a pulse shaper connected to the input of the counter, while the second generator output harmonic signals of the reference frequency is connected with the second input of the quadrature demodulator, the information inputs of the first and second buffer registers are measuring inputs for connection respectively to the outputs of the first and second ADCS, the first and second digital IIR filters connected to the outputs of the first and second buffer registers, respectively, the inputs of the first and second multiplexer connected to the first, second and third outputs of the respective digital IIR filters, and the outputs of the first and second a multiplexer to the input of arithmetic adders-vychitala, the first control output of the microprocessor kit is connected to the reset input in the initial state of the digital control unit of the synchronization phase, the second input is connected to the second control output of the microprocessor package, the output of the pulse shaper is connected to the synchronization input of microprocessor kit, the total output synchronization which is connected to the corresponding inputs of the synchronization buffer registers, IIR filters, multiplexers and arithmetic su the engine-vychitala, the third, fourth and fifth control outputs of the microprocessor sets connected with corrective inputs of the first digital IIR filter, sixth, seventh and eighth control outputs of the microprocessor sets connected with appropriate corrective inputs of the second digital IIR filter, the ninth control output of the microprocessor kit is connected to the control input of the display unit, the entered analog signal generator tone frequency, the first input connected to the second output key, the second with the first control the output of microprocessor kit, and the third input to the second control the output of microprocessor kit, the third multiplexer, two inputs of which are connected to the outputs of the quadrature demodulator, and two others with the analog outputs of the signal generator tone frequency, the first output of the third multiplexer is connected to the input channels of communication and to the input of the first ADC and the second output to the input of the second ADC, the output channels of a connected series circuit of the third ADC, the third buffer register, the third digital IIR filter, correcting the input of which is connected with the tenth, eleventh and twelfth control outputs of the microprocessor kit, and the fourth multiplexer, three entrances to the which is attached to the three respective outputs of the third digital IIR filter, and nine outputs of the second, third and fourth multiplexer pairs are connected to corresponding inputs of a six arithmetic adders-vychitala, the output of the first arithmetic adder-vicites connected to the first input of the first arithmetic unit multiplication with accumulation, the output of the second arithmetic adder-vicites connected to a second input of the first arithmetic unit multiplication with accumulation, the first and second inputs of the second arithmetic unit multiplication with accumulation and the first input of the third arithmetic unit multiplication with accumulation, the output of the third arithmetic adder-vicites connected to a second input of the third arithmetic unit multiplication with accumulation, the fourth arithmetic adder-vicites connected to the first the fourth input of arithmetic block multiplication with accumulation, the output of the fifth arithmetic adder-vicites connected to a second input of the fourth arithmetic unit multiplication with accumulation, the first and second inputs of the fifth arithmetic unit multiplication with accumulation and the first input of the sixth arithmetic unit multiplication with accumulation, and the output of the sixth arithmetic adder-vicites connected to a second input of the sixth arithmetic unit multiplication with accumulation, the outputs of the first, second and Proc. of the third arithmetic units multiplication with accumulation connected with the corresponding inputs of the fifth multiplexer, the output of which is connected to the first information input of the microprocessor unit, and the outputs of the fourth, fifth, and sixth arithmetic units multiplication with accumulation connected respectively to the inputs of the sixth multiplexer, the output of which is connected with the second information input of microprocessor kit, and the total output synchronization microprocessor kit is connected to the corresponding inputs synchronization of all multiplexers, digital IIR filters, arithmetic adders-vychitala, arithmetic units multiplication with accumulation, and the entrance and exit channels of communication are input and output devices.

The drawing shows a block diagram of the device.

Digital device for measuring the transport delay signal comprises a generator 1 harmonic signals (thermally stabilized, quartz, reference frequency shifted by 90° (reference oscillator), the shaper pulse synchronization 2, a counter 3, a square-wave generator 4, key 5, block quadrature demodulator 6, a digital block 7 of the regulation phase synchronization, two analog-to-digital Converter (ADC) 8, 9, the first and second buffer registers 10, 11, information inputs which are measuring inputs for connecting the respective outputs of the ADCS, the first and the Torah multiplexers 12 and 13 time division switching channels, the first and second digital IIR filters 14 and 15, first and second arithmetic adders-myCitadel 16, 17, connected to the first inputs of the first and second output multiplexer 12, respectively, to analog generator 18 signal tone frequency, the first input connected to the second output of the key 5, the third multiplexer 19, two inputs of which are connected to the outputs of the quadrature demodulator 6, and the other two with analog outputs of the generator 18 of the tone signals of frequencies, the first output of the third multiplexer 19 is connected to the input of the investigated channel 20 and to the input of the first ADC 8 and the second output to the input of the second ADC 9, the output of the investigated channel 20 is connected a series circuit of the third ADC 21, the third buffer register 22, the third digital IIR filter 23 and the fourth multiplexer 24, the three inputs of which is connected to three respective outputs of the third digital IIR filter 23, and nine outputs of the second, third and fourth multiplexer 12, 13, 24 pairs connected to corresponding inputs of a six arithmetic adders-vychitala 16, 17, 25, 26, 27, 28, the output of the first arithmetic adder-vicites 16 connected to the first input of the first the arithmetic unit multiplication with accumulation 29, the output of the second arithmetic adder-vicites 17 is connected to a second input of the first and ipotechnogo block multiplication with accumulation 29, the first and second inputs of the second arithmetic unit multiplication with accumulation 30 and the first input of the third arithmetic unit multiplication with accumulation 31, the output of the third arithmetic adder-vicites 25 is connected to a second input of the third arithmetic unit multiplication with accumulation 31, the output of the fourth arithmetic adder-vicites 26 connected to the first input of the fourth arithmetic unit multiplication with accumulation of 32, the output of the fifth arithmetic adder-vicites 27 is connected to a second input of the fourth arithmetic unit multiplication with accumulation of 32, first and second inputs of the fifth arithmetic unit multiplication with accumulation 33 and the first input of the sixth arithmetic unit multiplication with accumulation 34 and the output of the sixth arithmetic adder-vicites 28 is connected to a second input of the sixth arithmetic unit multiplication with accumulation 34, the outputs of the first, second and third arithmetic units multiplication with accumulation 29, 30, 31 are connected to the corresponding inputs of the fifth multiplexer 35, and outputs the fourth, fifth, and sixth arithmetic units multiplication with accumulation 26, 27, 28 connected respectively to the inputs of the sixth multiplexer 36, the outputs of the fifth and sixth multiplexers 35, 36 are connected with the first and second information inputs of microprocessor kit 3, the total synchronization microprocessor kit is connected to the corresponding inputs synchronization of all multiplexers 12, 13, 19, 24, 35, 36, digital IIR filters 14, 15, 23, arithmetic adders-vychitala 16, 17, 25, 26, 27, 28, arithmetic blocks the multiplication with accumulation 29, 30, 31, 32, 33, 34, microprocessor kit 37 containing input and output data registers, the data processing unit (BPS), the unit firmware control (MCS) and clock generator (ICG), which synchronizes the work of the IPA, BAUD, registers, fifth and sixth multiplexers with time division, and the display unit 38. Device firmware control operates in pipeline mode, which improves performance due to parallel the organization of the work buffer registers, digital IIR filters, multiplexers, arithmetic adders-vychitala, arithmetic units multiplication with accumulation and microprocessor kit 37. Input and output the analyzed communication channel 20 are measuring inputs of the device.

Measurement of the transport delay of signals τTin technology and communications, such as telephony (from 100 Hz to 10 kHz) in normal operation, accompanied by remotely distributed industrial noise ni(t), which are in General limited to the hinnon observation interval are non-stationary in nature. At the entrance of the investigated object 20 from the first analog output of the generator 18 of the tone signals of frequencies through the third multiplexer 19 coherently with the common synchronization signal is supplied to the test signal X1(nT). At the same time this signal is fed to the input of the first ADC 8. From the second analog output of the generator 18 of the tone signals of frequencies through the third multiplexer 19 to the input of the second ADC 9 is applied coherently copy of the test signal X2(nT), shifted in time by a reference delay τMthat is software controlled microprocessor kit 37. From the output of the research object 20 signal Y*(t)=Y(t)+N(t), where Y(t) is the useful signal, a N(t) is the generalized disturbance, is input to the third ADC 21. The signals from the outputs of the first, second and third ADC 8, 9 and 21 in parallel through the first, second and third buffer registers 10, 11 and 22 are received at the respective inputs of the first, second and third digital IIR filters 14, 15 and 23.

In accordance with the algorithm of approximation of the operator of the transport delay of signals tonal frequencies e-τsnext Pade and limited to engineering practice second order on the respective outputs three digital IIR filters 14, 15 and 23 continuously pipelining signals are formed Withji(nT), where T is the quantization step in time, a single for ADC buffer the s registers and digital IIR filter, working in a pipelined mode, and n=1, 2, 3, 4,...

Signalsji(nT) are removed from the first, second and third outputs of the respective digital IIR filters, and

Cj3(nT)=dj2(nT)/dt=d2Withj1(nT)/dt

where j=1, 2, 3.

Unlike the prototype is continuously formed in parallel in time two algebraic equation of the form:

When this reference shift copies of the test signal Te for the second analog output of the generator 18 of the tone signals of frequencies is selected as follows:

It is enough to |τe|>|τt|.

From equations (1) and (2) you can go to equations of the form:

where DFT- an unknown parameter characterizing the sign and magnitude of the transport delay of the signal tone frequencies in a linear path channels of communication, including ADC and digital IIR filters, DFMthe second optional parameter allowing you to set the random measurement error caused in the General case of non-stationary noise in the observation interval. This parameter characterizes the transport delay of the signal on the second output of the generator 18 relative to the signal tone frequency on the yield of the investigated object 20.

Variables Zij(nT) at discrete points (nT) are formed on the respective outputs of the arithmetic adders-vychitala 16, 17, 25, 26, 27 and 28. The signals from the outputs of the six arithmetic adders-vychitala pairs synchronously arrive at the corresponding inputs of a six arithmetic units multiplication with accumulation 29, 30, 31, 32, 33, 34.

Accuracy assessment of the transport delay of the tone signals of frequencies in the linear channel of communication with different types of modulation increases with the statistical accumulation of information on arithmetic blocks the multiplication with accumulation in the synchronous control analog generator 18 signal tone frequencies. Integration of the signals included in equations (4) and (5), on a specially generated periods of time from the niT to (ni+kiT replaced by numerical integration method rectangles. The sample size is controlled by firmware running MCU microprocessor kit 37, which then decides BAUD two algebraic quadratic equations, formed in parallel in time:

where

j=1, 2; m=1, 2, 3.

Microprocessor kit 37 unlike the prototype computes two values: DFT* and DFM*. Signs and amount the s DF i* are displayed on the display unit 38.

Using the identity (3), under steady-state transport delay signal tone frequencies (which is typical for fixed location subscriber - node") can completely eliminate the measurement error of the transportation lag signal tone frequencies, caused by industrial noise. As shown by experimental studies, in the range from 50 Hz to 10 kHz measurement accuracy τT* approaching the resolution of microprocessor kit. This preserves the possibility of rapid technical diagnostics of communication channels in real time. Prospective application of the digital device in the task of positioning the mobile subscribers in the combined data network, including both wired communications and radio channels. Improved accuracy of measurement of the transport delay of signals in the normal operating mode will increase the speed of diagnosis and commissioning of complex radio systems.

Digital device for measuring the transport delay of the signal in technology and communication technology, comprising a generator of harmonic signals of the reference frequency reference pulse shaper synchronization counter, square wave pulser, digital block is regulirovaniya phase synchronization, the output of which is connected to the reference input of the phase generator of rectangular pulses, the output of which is connected through the key signal to the information input of the quadrature demodulator, the first generator output harmonic signals of the reference frequency is connected with the first common-mode input quadrature demodulator and a pulse shaper connected to the input of the counter, while the second generator output harmonic signals of the reference frequency is connected with the second input of the quadrature demodulator, the information inputs of the first and second buffer registers are measuring inputs for connection respectively to the outputs of the first and second ADCS, the first and second digital IIR filters connected to the outputs of the first and second buffer registers, respectively, the inputs the first and second multiplexers are connected to the first, second and third outputs of the respective digital IIR filters, the first control output of the microprocessor kit is connected to the reset input in the initial state of the digital control unit of the synchronization phase, the second input is connected to the second control output of the microprocessor package, the output of the pulse shaper is connected to the synchronization input of microprocessor kit, the total output synchronization which is connected with the corresponding the inputs synchronization buffer register, IIR filters, multiplexers and arithmetic adders-vychitala, third, fourth and fifth control outputs of the microprocessor sets connected with corrective inputs of the first digital IIR filter, sixth, seventh and eighth control outputs of the microprocessor sets connected with appropriate corrective inputs of the second digital IIR filter, the ninth control output of the microprocessor kit is connected to the control input of the display unit, characterized in that it introduced the analog signal generator tone frequency, the first input connected to the second output key, the second with the first control the output of microprocessor kit, and the third input with the second Manager the output of microprocessor kit, the third multiplexer, two inputs of which are connected to the outputs of the quadrature demodulator, and the other two with analog outputs of the signal generator tone frequency, the first output of the third multiplexer is connected to the input channels of communication and to the input of the first ADC and the second output to the input of the second ADC, the output channels of a connected series circuit of the third ADC, the third buffer register, the third digital IIR filter, correcting the input of which is connected with the tenth, eleventh and don datim control outputs of the microprocessor kit, and the fourth multiplexer, three inputs of which is connected to three respective outputs of the third digital IIR filter, and nine outputs of the first, second and fourth multiplexers are pairwise connected to corresponding inputs of a six arithmetic adders-vychitala, the output of the first arithmetic adder-vicites connected to the first input of the first arithmetic unit multiplication with accumulation, the output of the second arithmetic adder-vicites connected to a second input of the first arithmetic unit multiplication with accumulation, the first and second inputs of the second arithmetic unit multiplication with accumulation and the first input of the third arithmetic unit multiplication with accumulation, the output of the third arithmetic adder-vicites connected with a second input of the third arithmetic unit multiplication with accumulation, the fourth arithmetic adder-vicites connected to the first input of the fourth arithmetic unit multiplication with accumulation, the output of the fifth arithmetic adder-vicites connected to a second input of the fourth arithmetic unit multiplication with accumulation, the first and second inputs of the fifth arithmetic unit multiplication with accumulation and the first input of the sixth arithmetic unit multiplication with accumulation, and the output of the sixth arithmetic summit the RA-vicites connected to a second input of the sixth arithmetic unit multiplication with accumulation, the outputs of the first, second and third arithmetic units multiplication with accumulation connected with the corresponding inputs of the fifth multiplexer, the output of which is connected to the first information input of the microprocessor unit, and the outputs of the fourth, fifth, and sixth arithmetic units multiplication with accumulation connected respectively to the inputs of the sixth multiplexer, the output of which is connected with the second information input of microprocessor kit, and the total output synchronization microprocessor kit is connected to the corresponding inputs synchronization of all multiplexers, digital IIR filters, arithmetic adders-vychitala, arithmetic units multiplication with accumulation.



 

Same patents:

FIELD: ATMs.

SUBSTANCE: system has an ATM, supporting operative connection to server of memory devices and having data input device, displaying device, computer data processing device, providing for encryption of electronic document with electronic signature with use of private key of user. Memory devices server provides for recording of private key of user in a way, that it is matched by storage for safe data preservation and/or financial account of said user.

EFFECT: possible preservation of integrity and confidentiality of electronic documents during large amounts of time.

13 cl, 19 dwg

FIELD: digital data processing technologies.

SUBSTANCE: method includes receiving similar service cards at base terminals, user orders a card for receiving a certain service and from terminal through his own communication channel performs a query of card personalization control server for receiving data of start set of appropriate service. Sever identifies base terminal, checks query, forms and generates data for personalization of start set for current user card and directs it to appropriate base terminal, where these data are recorded in card memory. Said data are directed by server to billing system of organization - card emitter to provide for later possible activation of card by user.

EFFECT: higher efficiency, broader functional capabilities.

2 cl, 1 dwg

FIELD: computer science.

SUBSTANCE: system has three registers, users identification block, two comparison blocks, user requests receipt block, block for selecting support addresses of information-marketing center database, block for selecting addresses of user workplaces, data output block and block for forming signals for reading database.

EFFECT: higher reliability, broader functional capabilities.

9 dwg

FIELD: medicine, cardiological diagnostics.

SUBSTANCE: one should model chosen states or signs, compare informational parameters of characteristic features of either state or sign of a model with those of characteristic features of initial state or sign in a patient, correct the detection of the key words, the development of the main charts of description for every possible state or sign to synthesize a realistic three-dimensional picture of obtained state of sign of a model with characteristic features. While modeling one should obtain informational parameters of characteristic features of chosen state of sign due to creating a model the parameters of which and those of a patient should be in certain single-valued ratios of similarity. The method enables to widen functional possibilities of cardio-vascular diagnostics.

EFFECT: higher quality of diagnostics.

3 cl, 21 dwg

FIELD: computer science.

SUBSTANCE: device has sum forming blocks, matrix functions forming block, difference forming block, delay lines, apriori data output block.

EFFECT: higher precision.

6 dwg

FIELD: computer science.

SUBSTANCE: method includes performing a block of operations along N1 channels, where N1 is selected from 1 to 2256, wherein received information is separated on logically finished fragments, encoded on basis of preset algorithm, to produce a block of N-dimensional sets adequate for converted source information Aj with elements like {Bm, X1, X2,...,Xn}, where j - order number of set in range from 1 to 2256, Bm - identifier, X1-Xn - coordinate of element from its coordinates center, m and n are selected from 1 to 2256; received block of sets is compared to already accumulated and/or newly produced sets from multiple channels, intersecting portions of sets are found and cut out; after that cut intersections and sets remaining after cutting are distributed among databases, placing each same set into database appropriate for it and each of sets different with some parameter to databases appropriate for them and identifiers of databases storing these sets are substituted in place of cut sets.

EFFECT: higher speed of operation, higher precision, lower costs, broader functional capabilities, higher efficiency.

9 dwg

FIELD: computer science.

SUBSTANCE: device has physical value measurements results storage block, delay block, averaging-out block, control block, clock pulse generation block, block for approximation using method of least squares, block for storing trend estimates.

EFFECT: lesser error, higher efficiency.

9 dwg

FIELD: cybernetics.

SUBSTANCE: on basis of discontinuous measurements of input x(t) and output y(t) signals of object with discretization step Δt ranges are determined according to formula: [x(nΔt)-εx,x(nΔt)+εx],[y(nΔt)-εy,y(Δt)+εy], where n=0, 1, 2,..., and εx, εy - values of limit allowed errors of used measurement means, interval values of input and output signals are sent to continuous division identifier, on which continuous division is produced with several interval coefficients, on basis of which interval discontinuous transfer function is restored and also predicting model, and interval model values of output object signal are determined.

EFFECT: higher efficiency, higher precision, higher trustworthiness, broader functional capabilities.

4 dwg

FIELD: computer science.

SUBSTANCE: system has block for receiving orders for participation in competitive tender, block for identification of base address of incoming orders, block for forming of address of incoming orders, first block for modification database addresses, first comparator, block for receiving data for estimating orders, block for identification of base address of competitive orders, block for selecting addresses for notification of users, address register, block for forming of address of competitive orders, block for competitive committee control, second block for modifying database addresses and second comparator.

EFFECT: higher speed of operation, broader functional capabilities, higher efficiency.

11 dwg

FIELD: electronic financial systems.

SUBSTANCE: system has terminal 1, phone 2 of client, block 5 for receiving telecommunication information from user, database 10 and block 9 for comparison, additionally provided are processor 7, generator of identification code 4, identification block 8, block 11 for payment realization and block 12 for forming confirmation message.

EFFECT: higher reliability, higher efficiency.

1 dwg

FIELD: measurement engineering.

SUBSTANCE: method can be used for diagnosing technical condition of gas turbine engine during production, test and exploitation. Electro-static aerial is mounted behind cut of nozzle outside engine and its reactive gas-dynamic jet for registering pulsation of electric field generated by charged particles (electrons, ions, microscopic particles) which attend in moving jet. Dispersion σj is calculated from set of N points of registered signal during period of inspection in preset time period within preset time interval. Characteristic frequencies are determined in spectrum of registered signal and calculated dispersion of σj is compared with preset and determined in advance, reference value of σ*. If σj exceeds the bounds of preset range and there are frequencies in spectrum range being different reference ones, the failure is supposed to take place.

EFFECT: increased efficiency of diagnostics; reduced time for diagnostics.

3 dwg

FIELD: radio measurements.

SUBSTANCE: during check and demonstration of efficiency of control subject indicator, shining under effect from initiating field, stops shining after bringing devices of type Gamma-7 into area of effect of this field due to its destruction by electromagnetic waves of same frequency emitted by controlled object in counter-phase. Measuring devices register change of current strength and/or power, consumed by generator of initiating electromagnetic field.

EFFECT: simplified construction, simplified operation, lesser weight and dimensions.

FIELD: development of nonreflecting and absorbing coatings; chemical, varnish-and-paint, and other industries.

SUBSTANCE: proposed method intended for detecting heterogeneities of electrophysical and geometric parameters in insulating and ferrite coatings on metal surfaces, and can be used to check composition and properties of solid metal coatings includes excitation of slow surface E-wave; measurement of surface E-wave field strength decay in normal plane relative to direction of its propagation at dispersed points with aid of receiving dipoles; calculation of normal decay coefficient from mathematical formula given in description of invention, this being followed by calculation of mean value of normal decay coefficient of slow surface wave field strength. Maximal deviation of decay coefficient and maximal normal decay coefficient value are found from all probable measured values and compared with threshold value. Microprocessor unit stores desired data, then scans entire surface within given variations in coating size, and array of data on all digital measurement points is used to determine heterogeneity boundaries, relative size of confined heterogeneity area being found from ratio of heterogeneity area to total area of surface being scanned.

EFFECT: enhanced precision of determining and evaluating heterogeneity of geometric and electrophysical parameters of nonconducting coatings on metal backing.

1 cl, 2 dwg

FIELD: radio measurement engineering.

SUBSTANCE: method can be used for tuning and inspecting code on-board detectors of transportation vehicle automatic identification telemetric system. Section of reference aerial is calibrated in echo-free reference chamber inside which non-modulated oscillations are excited by connecting load in form of light-emitting diode cell to reference aerial. Fiber-optic section provided with light-receiving device and pre-calibrated indicator are also connected to reference aerial. Tested aerial is placed into the field induced by oscillator and measuring aerial inside working echo-free medium. The field is pre-calibrated by attenuator corresponding to readings of indicator of the reference aerial placed in the field before placing tested aerial inside the field.

EFFECT: improved truth of measurement; improved reliability of operation.

2 dwg

FIELD: measurement technology.

SUBSTANCE: device can be used for measuring degree of protection of technical installations and biological objects against electromagnetic field. Device has electric power source, amplifier, indication unit, generator, detector and electric supply stabilizer. Detector is made in form of two spirals having involute curve.

EFFECT: improved precision of measurement.

7 cl, 1 dwg

FIELD: detection and registration of microwave radiation.

SUBSTANCE: device works at two operation modes: mode of detection of microwave signals of radar devices and in remote search and detection of hijacked motor vehicle in common flow of motor vehicles. In both modes of operation the same tinge signal generator is used. Different ways of passing of tinge signal is provided due to usage of microwave switch and duplexer as well as by connecting input of low-noise microwave amplifier to output of duplexer.

EFFECT: widened operational capabilities.

3 dwg

FIELD: electric engineering.

SUBSTANCE: device has setting generator, power divider, modulator, calibrator, amplitude-phase receiver, amplitude receiver, subtracting cascade and indicator. Amplitude and phase fluctuations, formed by the very researched high-frequency device, are separated from each other and from noises of measuring equipment. Sensitivity of device to amplitude and phase fluctuations, formed by researched high-frequency device, is increased due to separation of these fluctuations from amplitude and phase fluctuations resulting from conversion of amplitude and setting generator frequency conversions in researched high-frequency device.

EFFECT: higher efficiency.

1 dwg

FIELD: radiolocation.

SUBSTANCE: viewfinder is disposed at specific distance from mechanical axis of aerial. Viewfinder is tightly connected with antenna aperture plane. Optical axis of viewfinder is directed in parallel to mechanical axis of aerial. Then electrical axis of aerial is guided to phase center of ancillary aerial which is disposed together with geodetic mark onto post. Optical axis of viewfinder is guided onto geodetic mark. Geodetic mark is tied to angular position detectors and stays apart from phase center of ancillary aerial for distance being equal to shift of viewfinder from mechanical axis of aerial to the plane of normal optical axis of viewfinder. Optical axis of viewfinder is guided onto center of aperture of ancillary aerial. Difference in coordinates is determined by angle of location of initial and final position of viewfinder optical axis. Sword is turned around axis being perpendicular to plane of sword and crossing center of ancillary aerial aperture by angle determined by the relation given in the description of the invention. Electrical axis of aerial is guided onto phase center of ancillary aerial and optical axis of viewfinder is guided onto geodetic mark.

EFFECT: improved precision of adjustment.

2 dwg

FIELD: laboratory tests of operation of aerials and direction finders.

SUBSTANCE: separate uniform field formers are used for both kinds (E- and H-) of waves. Electric field (E) former is disposed inside magnetic field (H) former in such a way that uniform fields formed by both formers could coincide or cross each other in bigger area to create electromagnetic (EH) uniform field at that area. Tested aerial is mounted precisely into the area. Relation between intensities of electric and magnetic field is changed by means of matching dividers mounted at output of signal oscillator. Sonic frequency generator or pulse generators are used as signal oscillator. Any component of field can be changed without making changes in the others.

EFFECT: improved noise immunity; widened range of working frequencies.

3 cl, 3 dwg

FIELD: radio engineering; measurement technology.

SUBSTANCE: device can be used for estimation of non-linear distortions introduced by processing sections or for amplification of low frequency signals, for example, sonic signals. The algorithm of operation of the system is based upon comparison of autocorrelation functions of random output and input signals. The task of estimation of introduced intermodulation distortions reduces to estimation of degree of changes in autocorrelation function of signal passed through non-linear circuits. Meter has random signal oscillator, band-pass filter, multiplexer, correlator, comparison unit and control unit.

EFFECT: improved precision of estimation.

5 cl, 5 dwg

FIELD: radio engineering.

SUBSTANCE: device for measuring effective scattering cross-section of radio-location objects has receiving-transmitting unit, registrar, stand mounted for rotation and provided with fixing unit which is used for mounting test object oriented in such a manner that normal to flat front of electromagnet wave radiated by receiving-transmitting unit belongs to preset plane of rotation of object. Precision inspection of measurement of angular diagram of effective scattering cross-section of objects provided due to the fact that radio-transparent envelope is rigidly fixed on the surface of object in parallel with preset plane of rotation of object. Radio-transparent envelope is made in form of thin straight cylinder of preset size. Cavity of envelope is partially filled with e4lectrically conducting liquid. Measured maximal level of effective scattering cross-section of main lobe of radio-transparent cylinder allows to find angle of inclination of plane of rotation of object.

EFFECT: improved precision of inspection.

7 dwg

Up!