The invention relates to specialized computing devices, designed to determine the correlation functions of random processes. The technical result is the simplicity of the circuitry multi-polar correlator and reliability of functioning of the scheme. Multi-polar correlator consists of a ring of the distributor 1, comprising a generator of clock pulses 11 and triggers 21-2namplifier-limiter 3, the key schemes 41-4nthe first and second logical elements 5 and 9, a logical element OR 6, item 7, the storage element 8 and the pulse counter 101-10n. Due to the fact that multi-polar correlator configured to change the number of triggers the ring of the distributor, the correlator provides the change range of the study of random processes. 1 Il. The invention relates to specialized computing devices, designed to determine the correlation functions of random processes.A wide class of correlators described in .Analog is multi-polar correlator copyright of svidetel is 2, auxiliary triggers 3 and 4, the key circuits of the first group 51-5nkey circuits of the second group 51-5m, diodes 6 and 7, the amplifier-limiter 8, the logic element And 9 and the pulse counter 10. However, this multi-polar correlator does not have high accuracy, because it takes into account the number of pulses=0 in the absence of the signal.The prototype is a multi-polar correlator copyright testimony 444194 , consisting of an annular distributor 1, comprising a generator of clock pulses 11 and triggers 21-2nthe first and second auxiliary triggers the first group1and 41the first and second auxiliary triggers the second group2and 42key circuits of the first group 51-5nthe first and second keys of the second group 51and 5m, diodes 6 and 7, the amplifier-limiter 8, the first and second logic elements And 91and 92the counters 101-10n, schema zero first auxiliary trigger 12 and the logic circuit OR 13 and 14.However, this multi-polar complex correlator in technical execution due to the use of the sub>1and 32and 42, schema zero first auxiliary trigger 12.The aim of the invention is the simplicity of the circuitry multi-polar correlator and reliability of functioning of the scheme.This goal is achieved by the fact that the output of the amplifier-limiter connected to the second input of the second element And the output of the first key is connected via a storage element with a first input of the second element And to the input element and to the first input element OR the output element through the second input element OR is connected with the second input of the first element And whose output is connected to the first counter and the trigger output is connected to the first input of the first element And the triggers are when pulses to open key schemes, as the pulses from the output of the second element And through the core schemas arrive at the inputs of the counters.Functional electrical diagram of the multi-polar correlator shown in the drawing and consists of a ring of the distributor 1, comprising a generator of clock pulses 11 and triggers 21-2namplifier-limiter 3, the key schemes 41-4nthe first and second logical elements 5 and 9, logicalchannel polar correlator operates as follows. From the output of the generator 11 clock pulses are received at the inputs of triggers 21-2nring of the distributor 1. Upon actuation of the first trigger 1's output pulse voltage is supplied only to the control input key scheme 41and the first input of the first logic element And 5. The pulse voltage from the outputs of the triggers 22-2nis supplied to the control inputs of the respective key schemes 42-4n.When receiving a pulse from the output of the first trigger 21the annular valve 1 opens a switching circuit 41through which the amplified input signal is supplied to the input storage element 8. Memorized polar signal at the first input of the second element And 9. And to the second input of the second element And 9 is continuously applied current value of the amplified input signal. With the release of the second element And 9 removed signal only during trigger 22-2nif it matches the polarity of the current signal values and stored in the respective counters 102-10nreceived input signal, and the first counter 101only counts cycles of the correlator. Element OR 6 is configured to positive creativily impulse. As to the first input of the first element 5 receives the signal from the first trigger 21ring of the distributor 1 is also positive, the output of the first element And 5 on the first pulse counter 101signal only when the signal of either polarity. Thus, in the absence of an input signal from the output of the first element 5 is not supplied to the counter 101the pulse and the storage element 8 does not fix the polarity of the input signal, therefore, increases the accuracy of the correlator.When pulse to the second trigger 22opens the key diagram 42and if the values from the storage element 8 and the current signal coincide at the inputs of the second element And 9, it exits through the open key scheme 42at the input of the counter 102receives a pulse. Similarly trigger key scheme 42-4nand the counters 102-10n.At the end of one cycle of operation of the ring dispenser 1 in the first trigger 21again the impulse that leads to memorize the new current value of the input signal, and thereafter the cycle is repeated.After the time required to identify the significant correlation number, recorded in the corresponding counter to the number registered in the first counter. The normalized correlation function of the random process is through the probability p(as function of delayp()=-cos2p().Define ordinate normalized correlation function corresponds to the number of cells ring of the distributor 1 and the discrete values of the arguments is a multiple of the period of the clock 11.The frequency range of the study of random processes can be changed by changing the frequency of the clock 11, and the change in the number of defined points of the correlation function by changing the number of triggers 21-2nring of the distributor 1.As shown above, the developed multi-polar correlator has a simple circuit configuration and high precision work.Sources of information 1. Rowinski Century. And., Orchowski C. F. Correlation device. M: Energy, 1974.2. Copyright certificate 327495 published 26.01.1972, Bulletin 5.3. Averscheduleservice polar correlator, containing ring dispenser, consisting of a clock, triggers, inputs of which receive impulses from the generator, the amplifier-limiter, the first key and the key circuit, the first and second elements And the first pulse counter and the counters, the element OR, characterized in that the output of the amplifier-limiter connected to the second input of the second element And the output of the first key is connected via a storage element with a first input of the second element And to the input element and to the first input of the OR element, the output element through the second input element OR is connected with the second input of the first element And whose output is connected to the first counter, and the output of the first flip-flop connected to the first input of the first element And the triggers are when pulses to open key of the scheme, and the pulses from the output of the second element And through the core schemas arrive at the inputs of the counters.
FIELD: specialized information extracting means.
SUBSTANCE: device has displacement registers, comparator block, XOR element, multiplexer, triggers, counter, AND elements.
EFFECT: simplified construction.
FIELD: computer science.
SUBSTANCE: device has first and second regenerators of random evenly spaced signals, second and first comparators, generator of short pulses, second and first binary counters, decoder, D-trigger, first and second RS-triggers, AND element, XOR element, reverse counter, clock pulse generator, divider with rebuilt division coefficient , pulse distributor, group of M synchronization blocks, group of M pulse distributors, N (M-10) - input elements R and N blocks for calculating ordinates of correlation function.
EFFECT: simplified construction and higher reliability .
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FIELD: the invention refers to the technique of detection of a target and determination of the direction at a target.
SUBSTANCE: the mode is realized by way of receiving of ultra wideband impulses reflected from the target, of delaying them on various time multitude in various channels of surveillance and multi channel processing. In the first variant of the current mode variation of the form of receiving impulses on a great number of discrete time positions are carried out by way of averaging-out by channels of surveillance at known direction of incoming reflected impulses in a beforehand designed control sector and then found valuation of the form of receiving impulse is used as a base signal in multi channel correlation processing. In the second variant valuation of magnitude of receiving impulse is formed in concrete moment of time for each base direction in beforehand given angular sector of control, valuation of the form of the receiving impulse is found according to formed valuations of magnitude 0f the receiving signal for various discrete moments of time; found valuation of receiving impulse is used as a base signal in multi channel correlation processing; out of multitude of results of correlation processing correlation maximum is chosen. This maximum is used as preliminary threshold decision statistics in the procedure of detection of the target; the direction of incoming reflected impulses with the help of interpolating valuation of the position of the correlation maximum in the environs of that base direction for which the largest result of multi channel correlation processing.
EFFECT: the use of this invention at location of a target with the help of ultra wideband impulses allows to receive signals incoming not only from in advance chosen base directions.
6 cl,9 dwg
FIELD: data processing in broadband radio communications and radio navigation.
SUBSTANCE: proposed method intended for use where reception of extended-spectrum data signals keyed by simulation-resistant pseudorandom nonlinear derivative sequences is always preceded by synchronization includes concurrent accumulation of periodic mutually correlated function values of signal segments arriving from output of dynamically matched adjustable filters with two standard sampling lines affording generation of random derivative, as well as determination of time step numbers of their mutual shift corresponding to delay synchronism. Then current delay of entire signal being received is found from combination of these time step numbers. Used as dynamically matched adjustable filters in search channels are acousto-electronic convolvers.
EFFECT: reduced time and hardware requirement for searching broadband delay signals characterized in high simulation resistance.
2 cl, 9 dwg
FIELD: engineering of specialized devices, meant for determining correlation functions of random processes.
SUBSTANCE: correlator consists of circular distributor (1), containing generator of clock impulses and serially coupled triggers (2), two limiter amplifiers (3), key circuits (4), logical elements "AND" (5,9), "OR" (6) and "NOT" (7), memorizing element (8) and impulse counters (10). In circular distributor (1) between "n" and "1" triggers (2), a "n+1" trigger (2) is additionally coupled, which makes it possible to introduce additional preparation operation for memorizing element (8), in other words, its nullification. Second input of "n+1" trigger (2) by preparation signal is connected to output of "n"-trigger (2), and its first output is connected to controlling input of additional "n+1" key circuit (4), input of which is connected to output of memorizing element (8), and output - to ground connection. Input clamp by second input signal through second limiter amplifier (3) is connected to second input contact of mode switch (12), its first input contact is connected to input of first key circuit (4) and to output of first limiter amplifier (3), input of which is connected to input clamp of first input signal; output contact of mode switch (12) is connected to second input of "AND" element (9).
EFFECT: increased precision of multi-channel polar correlator, expanded functional capabilities of correlator due to introduction of mode for determining mutual correlation function of two signals.
FIELD: navigation techniques.
SUBSTANCE: when forming an image of a surface, on which a sensor is moving, components of the image with spatial wavelength less than twice the size of the optical cell are destroyed, before calculation of shift between the reference and the current frames on the discrete set of numbers Arefij and Acurij, stored in the first and second memory buffers. Initial continuous functions Aref(x,y), Acur(x,y) are restored, and then the shift between the frames is calculated by comparing the restored continuous functions.
EFFECT: increased accuracy and resolution capacity of calculating shift.
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FIELD: physics; radio-technology.
SUBSTANCE: invention pertains to radio-technology, and particularly to optimum receiving of pseudonoise signals. The technical outcome is the increased resistance to interference of the output signal. According to the method, the radio frequency oscillation is converted to the video frequency range. The signal envelope is separated, sampled on time and amplitude on two levels, "1" and "0". The obtained code is recorded in an n-bit shift register of a discrete matched filter, matched by a direct code, and a discrete matched filter, matched by an inverse code. The automatic correlation function of the received signal is generated by removing the constant component from the result of adding output signals of the indicated discrete matched filters. The device which implements the method consists of a multiplier (1), low-pass filter (2), bidirectional limiter (3), cascade for coinciding with "1" (4), cascade for coinciding with "0" (8), inverter (7), n-bit shift registers (5,9), n-input adders (6,10), dual input adder (11), device for removing constant component (12), polling clock pulse source (T). At the first n-bit shift register and the first n-input adder there is discrete filter, matched by a direct signal code, and at the second n-bit shift register and the second n-input adder there is a discrete filter, matched by an inverse signal code.
EFFECT: increased resistance to interference of the output signal.
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SUBSTANCE: invention can be used for detection of complex signals in those radio-technical systems which are not capable to change signal phase quickly. Method for detection of Barker signal in matched filter which signal is modified by substitution "-1" elements for "0" elements consists in following. Received signal is filtered in auxiliary filter matched relatively to one signal position, delayed in time-delay circuit where delay between it's branches is equal to duration of one signal position. Corresponding elements of received signal code and elements of reference code are added one-by-one by modulo 2. Results of additions are inverted, summed, and in accordance with summing results the decision about detection is made.
EFFECT: possibility to process complex signals with constant phase.
SUBSTANCE: method consists in the following: placing on the monitor of a control question and versions of the answer to the given question, a choice of one, preferable trained, a version of the answer by means of moving of the manipulator cursor to the location of its indicator and the subsequent definition of correctness of the answer on a final cursor position; after placing of indicators of versions of answers in the range from the moment of the cursor movement beginning till the moment of fixing of its final position form a file trajectory parametres of its movement on the monitor, determine autocorrelation function of the obtained array of trajectory parametres and determine level of confidence of the trained person in the obtained knowledge by position of a maximum of function at which arrangement within the set error of decision-making in the beginning of co-ordinates gives the conclusion about the confident or uncertain motivation of the answer.
EFFECT: increase of reliability and accuracy of the control of obtained knowledge level.
FIELD: physics; computer facilities.
SUBSTANCE: invention concerns computer facilities and can be used for algorithmic diagnosing and compensation of failure of process of automatic support of the object by the television tracer of correlative type. For this purpose the known television tracer of correlative type is equipped with the analyser of failure of process of support and the additional commutator.
EFFECT: provision of fault-free object following at occurrence of sudden failures in the correlator at the expense of identification of failure of tracing by the correlator and automatic transmission to the given situation of priority of a number system of coordinates.