The phase method of direction finding and phase direction finder for its implementation

 

(57) Abstract:

The invention relates to radar, radio navigation and can be used to determine the location and movement of radiation sources of complex signals. The technical result is to enhance the functionality of the basic method by measuring the radial velocity D and the angular velocities of the source signal in azimuth and elevation . The proposed method can be implemented in the phase direction finder, which contains the antenna 1-5, 6-10 amps high frequency first local oscillator 11, a mixer 12 to 16, 23, 51, 53, amplifiers 17-21, 52 of the first intermediate frequency, a multiplier products 25-29, 44, 45, narrowband filters 30-34, 46, 47, 54, phasemeter 35-40, the counters 41, 48, 49, 55, computing unit 42 unit 43 registration, 2 C. p. F.-ly, 3 ill.

The invention relates to radar, radio navigation and can be used to determine the location and movement of radiation sources of complex signals.

Known phase methods measurements and the phase direction finders (RF patents NN 2003131, 2006872, 2010258, 2012010, 2134429; Space trajectory measurement. Under the General editorship PA. Agadzhanova and other M: Owls. radio, 1969, S. 244-245; I. E. Kinkelin and other Phase method prelegal" (patent of the Russian Federation N2134429, G 01 S 3/00,1997), which provides a measurement of the angular coordinate , and the distance D to the source of the radiation signal, i.e., allows to determine the location of the radiation source signal.

However, the potential of this method have not been fully utilized. In this way it is possible to measure the radial velocity and angular velocity of the radiation source signal in azimuth and elevation and thereby to determine the modulus of the velocity vector of the source signal:

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Object of the invention is to enhance the functionality of the basic method by measuring the radial velocity and angular velocity of the radiation source signal in azimuth and elevation

The task is the fact that the method based on the reception signals of five antennas, arranged in a geometric straight angle, the top of which is placed the antenna of the measuring channel, common to the four dynamical channels located in the azimuthal and elevation planes, two on each plane, thus forming in each plane, two measurement bases d and 2d, between which establish the inequality:

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where is the wavelength;

in this case, smaller base d image is the one of the corners, converting the received signals in frequency, the selection voltage of the first intermediate frequency re-converting the frequency of the voltage of the first intermediate frequency measuring channel, the selection voltage of the second intermediate frequency, the multiplication with the voltage of the first intermediate frequency direction-finding channels, the allocation of the received voltage harmonic oscillations at the frequency of the second lo preserving phase relationships, measuring the phase difference between the harmonic oscillations and the voltage of the second local oscillator and the evaluation of the values of the azimuth and elevation of the source signal, the multiplication of the received signal of the first DF channel voltage of the first intermediate frequency of the second dynamical channel in the azimuthal plane, the allocation of the received voltage harmonic oscillations at the frequency of the first local oscillator preserving phase relationships, the measurement of the carrier frequency of the received signal, the angle of sight and the difference of difference of phases between the first dynamical and measurement channels, as well as between the second and first dynamical channels in the azimuthal plane and the evaluation of their values digestibility radiation source signal, Peremohy voltage of the first intermediate frequency measuring channel voltage of the first intermediate frequency of the second and the fourth direction-finding channels located in the azimuthal and elevation planes, respectively, are extracted from the received voltage harmonic oscillations with frequencies equal to the difference between the Doppler frequency and evaluate the values of the angular velocities of the source signal in azimuth and elevation, in the measuring channel perform dual conversion frequency of the received signal using two reference frequencies and frequency stand, which is injected to determine the sign of the Doppler shift, emit harmonic oscillation with Doppler shift, measure the frequency and the magnitude and sign of the Doppler shift estimate the magnitude and direction of the radial velocity of the source signal, the measured values of the range, radial velocity and angular velocity in azimuth and elevation determine the modulus of the velocity vector of the source signal.

The location and the module of the velocity vector of the radiation source, for example, a complex signal with phase shift keying (QPSK) for the proposed method is gnali with unstable carrier frequency of five antennas 1 - 5, located in the geometric form of a right angle (Fig. 2), the top of which is placed the antenna 1 of the measuring channel, thus forming in each plane, two measurement bases d and 2d:

< / BR>
where U1-U5- amplitude signals;

c, Tc,1-5- carrier frequency, duration, and initial phase signals;

- instability of the carrier frequency due to various destabilizing factors, including the Doppler effect;

k(t) = {0,} - manipulated component phases, reflecting the law of phase manipulation, and k(t) = const for Kn< t < (K+1)nand may change abruptly at t = Kn, i.e., at the boundaries between elementary parcels (K=1,2,...,N-1);

nN - the length and number of basic assumptions which form the signal duration Tc(Tc= Nn).

2. Convert them to frequency using a voltage of the first local oscillator (lo:

Ur1(t) = Ur1cos(r1t+ar1)

where Ur1,r1,r1the amplitude, frequency and initial phase of the voltage of the first local oscillator;

and allocate the voltage of the first intermediate frequency:

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0tTc,

where

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K1- coeff
thus forming one measuring and four dynamical channel, two on each plane.

3. In the measuring channel voltage UPR1(t) the first intermediate frequency second time transform on the frequency using the voltage of the second lo:

ur2(t) = Ur2cos(r2t+ar2)

where Ur2,r2,r2the amplitude, frequency and initial phase of the voltage of the second local oscillator;

and allocate the voltage of the second intermediate frequency:

up(t) = Upcos[(AC2)t+ak(t)+ap],

where

AC2=PR1-r2the second intermediate frequency;

p=1-r2.

4. Peremohy voltage of the second intermediate frequency Up(t) of the measuring channel with voltages UAC2(t)-UWP5(t) the first intermediate frequency direction-finding channels.

5. From the obtained stress emit harmonic oscillations at the frequency of the second local oscillator preserving phase relationships:

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0tTc,

where

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K2- transfer coefficient multiplier products;

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d, 2d measuring base;

- the angular coordinates in azimuth and angular planes.

the second lo UT2(t) and evaluate the values of the azimuth and elevation of the source signal.

7. Peremohy the received signal U2(t) of the first direction-finding channel voltage UAC3(t) the first intermediate frequency of the second dynamical channel in the azimuthal plane.

8. From the obtained voltage emit harmonic oscillation at a frequency ofr1the first local oscillator preserving phase relationships

u10(t) = U10cos(r1t+ar1+5), 0 t tc,

where

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9. Measure the phase difference5between harmonic oscillation U10(t) and the voltage of the first lo UG1(t).

10. Measure the carrier frequency of the received signal and the difference of the difference of phases:

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Expressing sin1and sin3through the sides of right-angled triangles 11' And 22' And 33' And get

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< / BR>
where D is the distance from the radiation source signal.

The above expression can be written in the approximate form:

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The value of difference of difference of phases in approximate form as follows:

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11. The desired distance to the radiation source signal estimate using the following formula:

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12. And the.

13. Measure the radial velocity of a source of the radiation signal. The specified dimension is based on the use of the Doppler effect.

The essence of it lies in the fact that the frequency fwithaccept fluctuations different from the frequency f0emitted oscillations, if the emitter and receiver are moving relative to each other.

As we know from the General theory of relativity, the relationship between frequency fwithand f0is determined by the ratio

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where C is the speed of light;

V - full speed signal source;

the radial component of velocity of the source signal (emitter).

Since

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the expression for the carrier frequency can be written as

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Limited to the first summands in the first part of the last equality, we obtain

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where Fg- Doppler shift frequency.

Replacing the exact ratio close causes a truncation error of measurement of radial velocity. To measure the radial velocity of the emitter in the measuring channel perform dual conversion of the received signal using two reference frequencies f1. The voltage of the first intermediate frequency fPCwhere is the gain of the received signal, is determined by the difference

fPC=fwith-f1=f0+Fg-f1,

where f1the frequency of the reference signal, participating in the first frequency conversion of the received signal.

The reference signal is participating in the second frequency conversion of the received signal, has a frequency of

f2=f0-f1-F0.

After the second frequency conversion of the received signal are generated oscillation frequency

fISM= fPC-f2= f0+ Fg- f1-f0+F0= Fg+F0.

Depending, fISM> F0or fISM< F0determine the sign of the Doppler shift, and hence the direction of the radial velocity.

14. Measure the angular velocity of the emitter. These measurements in two planes based on the comparison of Doppler shifts in the two systems separated antennas, the base of which is oriented in space at an angle of 90o(Fig. 2). While derivatives are measured two guide cones:

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From derivatives not difficult per the ski frequencies in azimuth and angular planes.

Fg1= Fg3-Fg1, Fg2= Fg5-Fg1.

Thus, to measure the angular velocities of the source signal, in addition to the Doppler difference frequency, it is necessary to measure direction cosines in the azimuthal and angular planes.

On detected values of angular velocities determine the tangential components of the velocity vector of the source signal:

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15. The module of the velocity vector of the source signal

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find how the measurement result is six radio navigation options: three coordinates, D and three speeds

The proposed phase method of direction finding can be implemented in the phase direction finder, a block diagram is shown in Fig. 1. The mutual arrangement of the receiving antennas is shown in Fig. 2 and 3.

The phase signal includes receiving antennas 1 and 5 amps 6 - 10 high frequency first local oscillator 11, mixers 12 - 16, 23, 51, 53, the amplifiers 17 - 21, 52 of the first intermediate frequency, a second local oscillator 22, an amplifier 24, a second intermediate frequency, multiplier products 25 - 28, 29, 44, 45, narrowband filters 30 - 34, 46, 47, 54, phasemeter 35 - 40, frequency 41, 48, 49, 55, computational block 42, block 43 of the Desk.

Will measure the progress of which is connected to the output of the local oscillator 11, amplifier 17, the first intermediate frequency and the frequency of 41.

Each DF channel consists of a series of 2 antennas (3, 4, 5), amplifier 7(8, 9, 10) high frequency mixer 13 (14, 15, 16), a second input connected to the output of the local oscillator 11, the amplifier 18 (19, 20, 21) of the first intermediate frequency, multiplier 25 (26, 27, 28), a second input connected to the output of the amplifier 24, a second intermediate frequency, narrow-band filter 30 (31, 32, 33) and phase meter 35 (36, 37, 38), a second input connected to the output of the local oscillator 22. The output of the amplifier 7 high frequency sequentially connected to the multiplier 29, the second input connected to the output of the amplifier 19, a narrow-band filter 34, the phase meter 39, a second input connected to the output of the local oscillator 11, the phase meter 40, a second input connected to the output of the phase meter 35, the computing unit 42, a second input connected to the output of the phase meter 39, and a third input connected to the output of the counter 41, and the recording unit 43, second, third, fourth and fifth inputs of which are connected to the outputs of the phase meter 35-38, respectively. The output of the amplifier 17, the first intermediate frequency connected in series multiplier 44, a second input connected to the output maximizing the input of the computing unit 42 and the sixth input of the recording unit 43. The output of the amplifier 17, the first intermediate frequency connected in series multiplier 45, a second input connected to the output of the amplifier 21 and the first intermediate frequency, narrow-band filter 47 and the counter 49, the output of which is connected to the fifth input of the computing unit 42 and the seventh input unit 43 of the Desk. The output of the amplifier 6 high frequency connected in series mixer 51, a second input connected to the first output unit 50 reference frequencies, the amplifier 52, the first intermediate frequency, a mixer 53, a second input connected with the second output unit 50 of the reference frequency, narrow-band filter 54 and the counter 55, the output of which is connected to the sixth input of the computing unit 42 and the eighth input unit 43 of the Desk.

The phase signal is as follows.

Accept FMN signals from the outputs of the antennas 1 - 5 6-10 amps high frequency received at the first inputs of the mixers 12 to 16, respectively, the second inputs of which are supplied with voltage of the first local oscillator. The outputs of the mixers 12 to 16 are formed voltage Raman frequencies. Amplifiers 17-21 are voltage UPR1(t)-UWP5(t), only the first intermediate frequency. The voltage of the first input voltage UT2(t) lo. At the output of mixer 23 is formed voltage Raman frequencies. The amplifier 24 is allocated the voltage of the second intermediate frequency, which is fed to the second inputs of the multiplier products 25 - 28, at the first input of which receives the voltage UAC2(t)-UWP5(t) the first intermediate frequency. From the obtained stress narrowband filters 30-33 stand out harmonic oscillations U6(t)-U9(t) received at the first inputs of the phase meter 35-38, the second inputs of which are supplied with voltage UT2(t) of the local oscillator 22. The measured phase shifts1,2,3and4register unit 43 of the Desk.

The phase meter 39 is measured phase shift5. The difference between the phase difference () = (1-5) is measured by the phase meter 40 and arrives at the computing unit 42, where it is indirectly determined by the distance D from the radiation source complex signal and then recorded in the block 43 of the Desk. In the last determined location of the radiation source complex signal.

The maximum error in determining the distance D is determined by the expression

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For measured values of azimuth , elevation and distance D is determined octopole the(t) c the output of the amplifier 6 high frequency is supplied to the first input of the mixer 51, the second input of which is applied the first reference frequency f1. At the output of mixer 51 are formed voltage Raman frequencies. Amplifier 52 is allocated the voltage of the first intermediate frequency

fPR1- fwith- f1= f0+ Fg- f1,

which is supplied to the first input of the mixer 53. To the second input of mixer 53 is fed Opera signal whose frequency is determined by the expression

f2=f0- f1-F0,

where F0the frequency of the stand, which is output to determine the sign of the Doppler shift Fg.

At the output of mixer 53 is formed of the oscillation frequency

fISM= fPC- f2= f0+ Fg- f1- f0+ f1+ F0= Fg+ F0,

which is separated by a narrow-band filter 54, is measured by the frequency counter 55 and enters the computing unit 42 unit 43 of the Desk. The magnitude and sign of the Doppler shift estimate the magnitude and direction of the radial velocity of the source signal.

To measure the angular velocity of the emitter along the azimuth and elevation angle of the voltage UPR1(t), Up is the input of the multiplier products 44 and 45. While narrowband filters 46 and 47 produce harmonic oscillations at frequencies equal to the difference between the Doppler frequencies in the azimuthal and angular planes:

Fg1= Fg3-Fg1, Fg2= Fg5-Fg1.

These differential Doppler frequency measured by the frequency 48 and 49, respectively, are received in the computing unit 42 and fixed unit 43 of the Desk.

In the computing unit 42 are determined by the tangential components of the velocity vector of the emitter

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and the module of the velocity vector of the emitter

,

also fixed unit 43 of the Desk.

Thus, the proposed method is compared with the reference provides definition not only the distance D and angle coordinates , but also the radial velocity and angular velocity in azimuth and elevation, radiator. While on the measured values of the distance D and the angular velocities are determined by the tangential components of the velocity vector of the emitter and on the measured values of the six navigation options: three D coordinates, three velocity is determined by the modulus of the velocity vector of the emitter, i.e., along with the location determined by the parameters of movement of the radiation source with the 1. The phase method of direction finding based on the reception signals of five antennas, arranged in a geometric straight angle, the top of which is placed the antenna of the measuring channel, common to the four dynamical channels located in the azimuthal and elevation planes, two on each plane, thus forming in each plane, two measurement bases d and 2d, between which establish the inequality

< / BR>
where is the wavelength,

a lower base d form a rough but clear scale of reference angles and the large base 2d form accurate but ambiguous scale of reference angles, converting the received signals in frequency, the selection voltage of the first intermediate frequency re-converting the frequency of the voltage of the first intermediate frequency measuring channel, the selection voltage of the second intermediate frequency, the multiplication with the voltage of the first intermediate frequency direction-finding channels, the allocation of the received voltage harmonic oscillations at the frequency of the second lo preserving phase relationships, measuring the phase difference between the harmonic oscillations and the voltage of the second local oscillator and the evaluation of the values of the azimuth of the voltage of the first intermediate frequency of the second dynamical channel in the azimuthal plane, the allocation of the received voltage harmonic oscillations at the frequency of the first local oscillator preserving phase relationships, the measurement of the carrier frequency of the received signal, the angle of sight and the difference of difference of phases between the first dynamical and measurement channels, as well as between the second and first dynamical channels in the azimuthal plane and the evaluation of their values, the distance to the radiation source signal, determining from the measured values of azimuth, elevation and range location of the radiation source signal, wherein Peremohy voltage of the first intermediate frequency measuring channel voltage of the first intermediate frequency of the second and the fourth direction-finding channels located in the azimuthal and elevation planes, respectively, are extracted from the received voltage harmonic oscillations with frequencies equal to the difference between the Doppler frequency and evaluate the values of the angular velocities of the source signal in azimuth and elevation, in the measuring channel perform dual conversion frequency of the received signal using two reference frequencies and frequency stand, which is injected to Opredelenie and the magnitude and sign of the Doppler shift estimate the magnitude and direction of the radial velocity of the source signal, on the measured values of the range, radial velocity and angular velocity in azimuth and elevation determine the modulus of the velocity vector of the source signal.

2. The phase signal containing measuring and four dynamical channel while measuring channel consists of series-connected antenna, amplifier high frequency mixer, a second input connected to the output of the first local oscillator, amplifier first intermediate frequency mixer, a second input connected to the output of the second local oscillator, the amplifier of the second intermediate frequency and the first frequency, each of the direction-finding channel consists of series-connected antenna, amplifier high frequency mixer, a second input connected to the output of the first local oscillator, amplifier first intermediate frequency, multiplier, a second input connected to the output of the amplifier of the second intermediate frequency, notch filter and phase meter, connected in series to the output of the amplifier high frequency of the first DF channel, the fifth multiplier, a second input connected to the output of the amplifier, the first intermediate frequency of the second direction-finding channel, the fifth user, a second input connected to the output of the first phase meter, computing unit, a second input connected to the output of the fifth phase meter, and a third input connected to the output of the first frequency, and the recording unit, second, third, fourth and fifth inputs of which are connected to the outputs of the first, second, third and fourth phase meter, respectively, characterized in that it is equipped with the sixth and seventh multiplier products, sixth, seventh and eighth narrowband filters, second, third and fourth frequency, block frequency, the seventh and eighth mixers and the sixth amplifier first intermediate frequency, and to the amplifier output of the first intermediate frequency measuring channel connected in series to the sixth multiplier, a second input connected to the output of the amplifier, the first intermediate frequency of the second direction-finding channel, the sixth narrowband filter and the second frequency, the output of which is connected to the fourth input of the computing unit and the sixth input of the recording unit, to output the first intermediate frequency measuring channel connected in series seventh multiplier, a second input connected to the output of the first amplifier protectorado connected to the fifth input of the computing unit and the seventh output of the registration unit, to amplifier output high-frequency measuring channel connected in series seventh mixer, a second input connected to the first output of the reference frequency, the sixth power of the first intermediate frequency, the eighth mixer, a second input connected to the second output of the reference frequency, the eighth narrowband filter and the fourth frequency, the output of which is connected to the sixth input of the computing unit and to the eighth input of the recording unit.

 

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FIELD: finding of azimuth of radio emission source (RES) in wide-base direction finding systems.

SUBSTANCE: angle of azimuth of RES is measured with high degree of precision due to elimination of methodical errors in direction finding caused by linearization of model electromagnet wave propagation wave front. As surface of RES location the plane is used which has RES line of location which has to be crossing of two hyperbolic surfaces of location corresponding to difference-time measurement. Method of RES direction finding is based upon receiving its signal by three aerials disposed randomly, measuring of two time differences of RES signal receiving by aerials which form measuring bases and subsequent processing of results of measurement to calculate values of RES angles of azimuth and coordinates of point through which the RES axis of sight passes. The data received are represented in suitable form. Device for realization of the method has three aerials disposed at vertexes of random triangle, two units for measuring time difference of signal receiving, computing unit and indication unit. Output of common aerial of measuring bases is connected with second inputs of time difference meters which receive signals from outputs of the rest aerials. Measured values of time differences enter inputs of computing unit which calculates values of RES angle of azimuth and coordinates of point through which the RES axis of sight passes. Data received from output of computing analyzing unit enter indication unit intended for those data representation.

EFFECT: widened operational capabilities of direction finder.

2 cl, 7 dwg

FIELD: radio engineering, applicable for location of posthorizon objects by radiations of their radars, for example, of naval formations of battle ships with operating navigational radars with the aid of coastal stationary or mobile passive radars.

SUBSTANCE: the method consists in detection of radiations and measurement of the bearings (azimuths) with the use of minimum two spaced apart passive radars, and calculation of the coordinates of the sources of r.f. radiations by the triangulation method, determination of location is performed in three stages, in the first stage the posthorizon objects are searched and detected by the radiation of their radars at each passive radar, the radio engineering and time parameters of radar radiations are measured, the detected radars with posthorizon objects are identified by the radio engineering parameters of radiations and bearing, and continuous tracking of these objects is proceeded, the information on the objects located within the radio horizon obtained from each passive radar is eliminated, the working sector of angles is specified for guidance and tracking of the selected posthorizon object, in the second stage continuous tracking of one posthorizon object is performed at least by two passive radars, and the time of reception of each radar pulse of this object is fixed, in the third stage the period of scanning of this radar, the difference of the angles of radiation by the main radar beam of each passive radar and the range to the posthorizon object with due account made for the difference of the angles of radiation are determined by the bearings (azimuths) measured by the passive radar and the times of reception of each pulse of the tracked radar. The method is realized with the aid at least of two spaced apart passive radars, each of them has aerials of the channel of compensation of side and phone lobes, a narrow-band reflector-type aerial, series-connected noiseless radio-frequency amplifier, multichannel receiving device, device of primary information processing and measurement of carrier frequency, amplitude and time of reception of signals of the detected radar, device of static processing of information and measurement of the bearing, repetition period, duration of the train and repetition of the pulse trains and a device for calculation of the difference of the angle of radiation of the aerials of the passive radars by the detected radar.

EFFECT: reduced error of measurement of the coordinates of posthorizon sources of radio-frequency radiations.

3 cl, 5 dwg

FIELD: radio engineering, applicable in electromagnetic reconnaissance, radio navigation and radio detection and ranging for determination of the direction to the source of radiation or reflection of radio waves.

SUBSTANCE: the phase direction finder has two antennas, two receiving paths, three phase shifters, two phase detectors, two limiters, three adders, two modulus computation devices, subtracting device, amplifier, comparator, gate circuit and an oscillator.

EFFECT: enhanced accuracy of direction finding and excepted its dependence of the attitude of the object of direction-finding.

2 cl, 10 dwg

FIELD: radio engineering.

SUBSTANCE: device has the first, the second and the third receiving antennas, the first, the second and the third high frequency amplifiers, the first and the second heterodynes, the first, the second and the third mixers, the first, the second and the third multipliers, the first, the second, the third and the fourth narrowband filters, the first, the second and the third intermediate frequency amplifiers, frequency multiplier by two, the first, the second and the third phase detectors, the first and the second correlator units, the first, the second, the third and the fourth threshold units, the first, the second, the third and the fourth keys and unit for recording.

EFFECT: wide range of functional applications.

3 dwg

FIELD: the proposed mode and arrangement refer to the field of radio electronics and may be used for definition of position of sources of emitting complex signals.

SUBSTANCE: the phase direction finder realizing the proposed phase mode of direction finding, has receiving aerials, receivers and a supporting generator, an impulse generator, an electronic commutator, a phase changer on 90, a phase detector and an indicator, a heterodyne, a mixer, an amplifier of an intermediate frequency, multipliers and band filters and a line of delay.

EFFECT: elimination of antagonism between requirements to accuracy of measuring and unique angle reading at phase mode of direction finding of sources of emitting of complex signals.

2 cl, 2 dwg

FIELD: the invention refers to the field of radio technique and may be used in range-difference systems of definition of the position of the sources of radio emissions.

SUBSTANCE: the mode is based on measuring of two differences of distances Δr12 and Δr13 to two pairs of mobile supporting points {O1,O2}and {O1,O3 , } the coordinates ,j= 1,2,3 supporting points Oj in the moment of time of measuring of distances, then the vector of measured values is transformed into the vector of the coordinates of the three points F1,F2 and M belonging to a hyperbolina: the vector is stored and transmitted along the channels of transmitting information into the center of processing information for using it in quality of initial data at solution a range-difference navigational task; at that the points F1 and F2 defines the focuses of the hyperbolina if it is a hyperbola or an ellipse or a focus and its projection on a directrix if it is a parabola and the third point belongs to the hyperbolina in such a manner that the position of its project on the direct F1F2 defines the form of the curve of the second order.

EFFECT: decreases volume of stored and transmitted data.

5 dwg

FIELD: radio electronics, applicable for passive radio monitoring in multi-channel system designed for direction finding of several sources of radio emission simultaneously getting into the reception zone.

SUBSTANCE: expanded functional potentialities by way of direction finding in two planes of several sources of radio emission simultaneously getting into the reception zone.

EFFECT: expanded functional potentialities.

2 dwg

FIELD: finding coordinates of radio source.

SUBSTANCE: as planes of position of radio source the planes are used, which have line of position of radio source, which has to be crossing of two hyperbolic surfaces pf position corresponding to time-difference measurements. Method is based upon reception of signal of radio source by four aerials, on measurement of three differences in time of reception of radio source signal by aerials, which aerials form measuring bases, upon subsequent processing of results of measurements for calculation of values of parameters of position of radio source and for calculating coordinate of radio source as crossing point of three planes of position. Device for realization of the method has four aerials which aerials form three pairs of measuring bases, which bases are disposed in non-coincident planes, three calculators for calculating parameters of position of radio source, calculator of radio source coordinates made in form of unit for solving system of linear equations and indication unit.

EFFECT: precise measurement of linear coordinates of object.

2 cl, 8 dwg

FIELD: radio detection and ranging, radio navigation, applicable for determining the angular co-ordinates of the signal radiation source.

SUBSTANCE: the claimed method is realized with the aid of a device having three receiving derails, three receivers, two phase-meters, computer, adder and a recording unit connected in a definite way.

EFFECT: enhanced range of one-valued measurement of angles at a small length of the rough measuring base.

3 dwg

FIELD: proposed invention refers to radiolocation and may be used for definition of position and movement of sources of radiation of complex signals.

SUBSTANCE: achieved technical result of invention is increase of trustworthiness of reception of useful signals with a priori known carrier frequency and removal of ambiguity of direction finding by suppression false signals (interference) not interesting for radio control and coming from other directions. At that proposed arrangement has receiving antenna with circle diagram of radiation pattern , receiving antenna with cardioidic diagram of radiation pattern, block for control over diagram of radiation pattern, first and second receiving sets, division block, threshold block, former of control pulse, first and second keys, meter of frequency, memory block, block for comparison of codes, motor and register block.

EFFECT: increases trustworthiness of direction finding.

4 dwg

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