RU2275649C2 - Method and passive radar for determination of location of radio-frequency radiation sources - Google Patents

Abstract

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

Description

The invention relates to radio engineering and can be used to determine the location of over-the-horizon objects from the radiations of their radar stations, for example, ship formations or warships with operational navigation radars using coastal stationary or mobile passive radar stations.

A known method for determining the sources of radio emission (see Dolukhanov M. Propagation of radio waves. - M .: Svyaz, 1972. - 336 p.), Based on measuring the azimuth and calculating the distance to the IRI using the known transmitter power, transmit antenna gain and multiplier track weakening. The disadvantages of this method include the need for a priori information about the transmitting device and the parameters of the radio wave propagation medium (RRV), which limits its use.

From the description of the patent of the Russian Federation No. 2072524, publ. 1997, IPC6 G 01 S 3/02, a method for determining the location of radio emitters is known, which consists in measuring the angles of arrival of the ionospheric wave in horizontal and vertical planes, measuring the altitude-frequency characteristics of the ionosphere above the radio direction finder by sounding it vertically, and performing trajectory calculation of the coordinates of the reflection point of the radio wave and determining the median values of the ionosphere parameters in it according to forecasts, calculating the angles of the longitudinal and transverse inclination of the reflecting layer of the ionosphere in the vicinity of the reflection point p diovolny, correcting the measured azimuth and elevation angle, calculating the distance to the IRI, as well as its latitude and longitude. This method has low accuracy in determining the sources of radio emission, which is caused by a significant error in approximating the altitude-frequency characteristics of the ionosphere, which determines the errors in determining the increments in the height of the reflecting layer along the propagation path of the radio waves and the angles of its longitudinal and transverse tilts in the vicinity of the reflection point of the radio wave.

From the patent of the Russian Federation No. 2154281, IPC7 G 01 S 3/02, publ. 2000, there is a known method for determining the sources of radio emission, which consists in measuring the azimuth and elevation angle of the ionospheric radio wave from the radio source, measuring the altitude-frequency characteristic (VCH) of the ionosphere by sounding it vertically at the azimuth and elevation measuring point, and determining the median characteristics of the ionosphere above by the region of measuring the angles of arrival and at the point of reflection of the radio wave, determining the increment of the ionosphere parameters along the propagation path of the radio waves, and refining the HF model of the ion spheres at the point of reflection of the radio wave taking into account the data of vertical sounding and forecasts, the calculation of the angles of the longitudinal and transverse inclination of the reflecting layer of the ionosphere in the vicinity of the point of reflection of the radio wave and the trajectory calculation of the coordinates of the source of radio emissions, while after measuring the VCh of the ionosphere by its vertical sounding at the point of measurement of azimuth and angle places it is additionally approximated by a polynomial, after which the RFI of the ionosphere is adjusted at the point of reflection of the radio wave. This method somewhat reduces errors in determining the coordinates of the source of radio emission, but also as described previously has low accuracy.

Known methods and devices for direction finding of sources of radio emission (RES) by means of electronic reconnaissance (see V.V. Tsvetov, V.P. Demin, A.I. Kupriyanov. Electronic warfare: radio reconnaissance and radio resistance. M: Publishing House of the Moscow Aviation Institute, 1998 city, p. 27 ... 32). For example, a number of direction finding methods are known, based on the fact that the phase relations between signals received at spatially separated points can be converted into the amplitude dependence of the sum of the received signals on the location of the RES (see V.V. Tsvetov, V.P. Demin , A.I. Kupriyanov, Electronic warfare: radio reconnaissance and radio countermeasures, Moscow: MAI Publishing House, 1998, p. 29).

There is also a method of direction finding based on measuring the difference in the times of reception of signals from a radio source, for example, a radar station (radar) with two spaced antennas (see V.V. Tsvetov, V. P. Demin, A. I. Kupriyanov. Electronic warfare: radio reconnaissance and radio resistance. M: Publishing House of the Moscow Aviation Institute, 1998, p. 39). When the position of the radar deviates from the perpendicular to the center of the base, a difference in the signal path Δr = r1-r2 occurs (r1 and r2 are the distances from the radar to the first and second antennas, respectively). The relative delay t of the signals, due to the constancy of the speed and linearity of the propagation of radio waves, is proportional to the path difference: t = Δr / s. In the general case, systems using the principle considered are differential-ranging, however, at large radar distances from the center of the base, when the distance to the radar is significantly greater than the base size, the hyperbolic position lines characteristic of the differential-ranging method in the far zone practically coincide with their asymptotes emanating in the form of rays from the center of the base. In this case, difference-ranging systems can be considered goniometric with their inherent errors.

Patent of the Russian Federation No. 2204145, IPC7 G 01 S 3/46, publ. 2003, the difference-range-finding method of direction finding of a radio emission source and its device, which provides the ability to determine the azimuth of the radar at any size of the measuring bases of the direction finder and the relative positions of the radar and direction-finding antennas, are protected.

The proposed method involves the following operations:

- have three antennas at the tops of an isosceles right triangle ΔABC;

- receive a radar signal on all three antennas,

- measure the difference in the time of reception of the radar signal by antennas forming orthogonal bases;

- calculate the values of the sum and difference of the differences in the reception times of the radar signal;

- calculate the ratio of the sum of the differences of the reception times of the radar signal to the difference of the differences of the reception times of the radar signal;

- calculate the value of the function arctan (x), which takes the result of the previous operation as an argument;

- calculate the coordinate value of the point belonging to the radar position line;

- display the results obtained.

The disadvantage of the described method is the low accuracy at low speeds of convergence of the measuring complex and the radar carrier, as well as significant errors in determining the location of pulsed radars and the inability to detect over-the-horizon objects due to the low sensitivity of searchless direction finders.

The most obvious and widely used is the amplitude direction finding method, which uses an antenna system having a radiation pattern with a pronounced maximum. Due to the mechanical change in the position (orientation) of the antenna, space is scanned, as a result of which the position of the antenna is determined at which the output signal of the antenna has the maximum amplitude, and the direction coinciding with the maximum of the antenna pattern is taken as the direction to the RES (see B.V. . Tsvetov, V.P. Demin, A.I. Kupriyanov, Radio-electronic warfare: radio reconnaissance and radio resistance. M: Publishing House of the Moscow Aviation Institute, 1998, p. 27). This direction finding method can be used in multi-position determination of the location of radio electronic equipment, when, at the first stage, based on the analysis of the radio technical parameters of the electronic signals, their geometric parameters are determined (bearing from several spaced direction-finding bearings or range differences), and then, at the second stage, based on geometrical parameters are calculated spatial coordinates. Most often they use triangulation methods (see V.V. Tsvetov, V.P. Demin, A.I. Kupriyanov. Electronic warfare: radio reconnaissance and radio resistance. M: Publishing House of the Moscow Aviation Institute, 1998, p. 33 ... 37). The triangulation method of positioning is implemented as follows. Two direction finders are located on the surface of the earth at a distance d from each other. Cartesian topocentric coordinate systems are associated with direction finders, respectively O ₁ x ₁ y ₁ z ₁ and O ₂ x ₂ y ₂ z ₂ . If we take the system O ₁ x ₁ y ₁ z ₁ ≡≡ Oxyz as the main system, then the coordinates of the RES in this system can be estimated on the basis of geometric constructions y = x · tgα ₁ = (d-1) · tg (1 / 2π- α ₂ ), where α ₁ and α ₂ - bearing measured by the first and second direction finders, where:

As can be seen from the above formulas, two independent measurements are sufficient to determine the spatial coordinates of the RES, but to increase the accuracy and eliminate uncertainty, the number of measurements is increased by using a larger number of direction finders.

The triangulation method for determining the sources of radio emission is adopted as a prototype. The disadvantage of the prototype is that with an increase in the distance to the source of radio emission, the error of coordinate measurement increases significantly, and due to the increase in the area of coordinate errors, the likelihood of false detection increases with many sources of radio emissions.

The problem solved by the invention, reducing the measurement error of the coordinates of horizontal sources of radio emissions.

The solution to this problem is achieved by the fact that in the method of determining the sources of radio emissions, mainly objects from the radiations of their radar stations, including detecting radiation and measuring bearings using at least two spaced passive radar stations (PRLS) and calculating the coordinates of the sources of radio emission triangulating the method, characterized in that the location is carried out in three stages, at the first stage on each radar search and search constriction of over-the-horizon objects by their radar radiations, measure the radio and temporal parameters of radar radiations, identify the detected radar with horizontal objects by the radio-technical parameters of radiations and bearing and switch to the continuous tracking mode of these objects, while filtering out information from objects located within the radio horizon of each radar control system, specify the working sector of the angles for pointing and tracking the selected over-horizon object, in the second stage, at least two radar control systems carry out they make continuous tracking of the over-the-horizon object selected at the first stage and record the time of reception of each radar pulse of this object, at the third stage, from the measured radars of bearings and the reception times of each pulse of the radar, determine the period of view of this radar, the difference in the angles of exposure of the main radar of each radar and the range to over-horizon object using the triangulation method, taking into account the difference in irradiation angles. The difference in the angles of radiation is determined in the following sequence: the time of passage of the maximum radiation pattern of the radar to the first radar is measured, the time of passage of the maximum radiation pattern to the second radar is measured, the difference of the angles of radiation is determined by the formula ψ = (2π · Δt) / T _review , where T _review - radar survey period, measured or selected from the catalog, Δt is the difference in the passage times of the maximum radiation pattern of radar directions to the first and second radar, π = 3.14.

The passive radar station used in the implementation of the proposed method is an independent invention.

Patent of the Russian Federation No. 2204145, IPC7 G 01 S 3/46, publ. 2003, a device was implemented that implements a differential-ranging method of direction finding of a radio emission source, which makes it possible to determine the radar azimuth for any sizes of direction finding radar bases and for the relative positions of the radar and direction-finding antennas. The structure of the device includes (Fig. 3) antennas 1, 2 and 3, a measuring device Y1, containing time difference meters 4 and 5, and an information processing and display device U2, containing a subtraction unit 6, a summing unit 7, an analysis unit 8 and a unit indications 9. The outputs of antennas 1 and 2 are connected to the first inputs of time difference meters 4 and 5, the second inputs of which receive a signal from the output of antenna 3. The output of time difference 4 is connected to the first inputs of the subtraction unit 6 and summing unit 7, and the output of the meter time difference 5 connects to torym inputs of subtraction and summation unit 6 7. At block analysis unit inputs signals coming from the outputs of the time difference measuring devices 4 and 5, the subtracting unit 6 and 7. Yield summation block analysis unit connected to the input of the indication unit.

Antennas 1, 2, and 3 are spatially spaced and located at the vertices of an isosceles right triangle ΔABC, respectively.

The radar signal received by antennas 1, 2 and 3, at their outputs has the form

u ₁ (t) = U (t) cos (w ₀ t + φ ₀ ),

u ₂ (t) = U (t + Δt ₂₁ ) cos [w ₀ (t + Δt ₂₁ ) + φ ₀ ],

u ₃ (t) = U (t + Δt ₃₁ ) cos [w ₀ (t + Δt ₃₁ ) + φ ₀ ],

respectively.

The signals from the outputs of antennas 1 and 3 are fed to the first and second inputs of the time difference meter 4, respectively, similarly the signals from the outputs of antennas 2 and 3 are fed to the first and second inputs of the time difference meter 5, respectively. The time difference meters 4 and 5 perform the operation of measuring the time differences Δt ₁₃ and Δt _{23 of the} arrival of the IRI signal to pairs of antennas (1, 3) and (2, 3). Moreover, Δt _ij = t _i -t _j ,

where t _k is the arrival time of the IRI signal at the k-th antenna,

Δt _nm is the difference between the arrival times of the IRI signal at the n-th and m-th antennas.

The time difference meters 4 and 5 implement one of the known methods for measuring the time difference.

From the outputs of the time difference meters 4 and 5, the measured values Δt ₁₃ and Δt ₂₃ are supplied to the subtraction 6 and summation blocks 7. The subtraction unit performs the operation of calculating the value t _{Δ of the} difference in the difference in the times of receiving the IRI signal; the summing unit performs the operation of calculating the value of t _{s the} sum of the differences in the reception times of the IRI signal:

t _s = Δt ₁₃ + Δt ₂₃ ,

t _Δ = Δt ₁₃ -Δt ₂₃ .

The calculated values of t _Δ and t _s from the outputs of blocks 6 and 7 are fed to the first and fourth inputs of the analysis unit 8, the second and third inputs of which receive the values of the time differences Δt ₁₃ and Δt ₂₃ from the outputs of the time difference meters 4 and 5.

The analysis unit 8 is a specialized computing device that performs the following computing operations:

- the value of the ratio w = t _s / t _Δ is calculated;

- calculate the value of φ the elevation angle of the radar using the expression

φ = arctan (w),

where the result of the previous computational operation is used as an argument;

- calculate the values of x _f , y _f coordinates of the point belonging to the radar position line.

The calculated values of φ, x _f , y _f from the output of the analysis unit go to the display unit, which is designed to visualize the results of the proposed direction finding method.

The device described in the patent of the Russian Federation No. 2204145, adopted as a prototype.

The disadvantage of the described device is the low accuracy at low speeds of convergence of the measuring complex and the radar carrier, as well as significant errors in determining the location of pulsed radars and the inability to detect over-horizon objects due to the low sensitivity of searchless direction finders.

The technical result from the use of the inventive passive radar station is to increase the accuracy of positioning of over-the-horizon objects by the radiations of their radar.

The specified technical result is achieved in that the passive radar station contains antennas for the side and background lobe compensation channel, a narrowly oriented mirror antenna, series-connected low-noise high-frequency amplifier, a multi-channel receiver, a device for the primary processing of information and measuring the carrier frequency, duration, amplitude and time of signal reception detected radar station, a device for statistical processing of information and measurement of bearing, period by the duration of the series, the duration of the series and the repetition of the series of pulses, the second input-output of which is connected to the first input-output of the device for mutual exchange of information of passive radar stations about the detected radar stations and time synchronization, the third input-output is connected to the first input-output of the device for calculating the difference in the angle of radiation the detected radar station of the antennas of passive radar stations, the fourth input-output is connected to the first input-output of the control device, the second input-output One of the control devices is connected to the second input-output of the device for calculating the difference in the angles of exposure of the detected radar antennas of passive radar stations, the third input-output of which is connected to the second input-output of the device for the mutual exchange of information of passive radar stations about the detected radar stations and time synchronization, third output the control device is connected to the drive of a narrowly directed mirror antenna, the irradiator of which is connected to the low noise input its high frequency amplifier, the output of compensation amplifier side lobes and background is coupled to the second input multichannel reception device, wherein the antenna channel compensation on the reception side lobes and back-end amplifier connected to the channel compensation of the side lobes and background.

The claimed technical solutions meet the conditions of patentability "novelty", "inventive step" and "industrial applicability", since there are no sources of information describing the claimed combination of features, technical solutions relate to radio engineering and can be repeatedly reproduced to achieve the stated result.

The invention is illustrated by drawings. Figure 1 shows a radar positioning diagram according to the triangulation method, figure 2 - radar positioning diagram using the inventive method, figure 3 is a block diagram of a device for locating radio emission sources according to RF patent No. 2204145, figure 4 is an example system that implements the claimed method, figure 5 is a block diagram of a passive station of a radio station

The positions in the drawings 1 ... 5 denote:

1 - the first antenna of the device according to patent No. 2204145;

2 - the second antenna of the device according to patent No. 2204145;

3 - the third antenna of the device according to patent No. 2204145;

4 - the first meter of the time difference of the device according to patent No. 2204145;

5 - the second meter of the time difference of the device according to patent No. 2204145;

6 - block subtraction of the device according to patent No. 2204145;

7 - block summation of the device according to patent No. 2204145;

8 - unit analysis of the device according to patent No. 2204145;

9 - display unit of the device according to patent No. 2204145;

10 - the first passive radar station PRLS 10;

11 - second passive radar station PRLS 11;

12.1, 12.2 - narrowly directional mirror antenna;

13.1, 13.2 - antennas of the reception compensation channel along the side and background lobes;

14 - device for the mutual exchange of information and time synchronization VZOI 14;

15 - communication channel;

16 - low-noise high-frequency amplifier UHF 16;

17 - multi-channel receiving device MPU 17;

18 - amplifier channel compensation side and background petals of UK 18;

19 - a device for the primary processing of information and measuring the carrier frequency, duration, amplitude and time of reception of radar signals POI 19;

20 - a device for statistical processing of information and measurement of bearing, pulse repetition period, series duration and repetition period of series of VOI 20;

21 - control unit UU 21;

22 - a device for calculating the difference in the angles of exposure of the detected radar antennas of passive radar stations and the coordinates of the detected radar stations VU 22;

23 - drive narrowband mirror antenna;

A - position PRLS 10;

In - position PRLS 11;

C is the true position of the radar carrier object;

C1, C2, C3, C4 - field of errors with the triangulation method of positioning;

U1 - measuring device;

U2 - information processing and display device;

R, α — spatial coordinates of the radar carrier object;

ψ is the difference in the angles of irradiation.

The claimed method is implemented as follows. At least two passive radar stations (PRLS), including measuring instruments for radio engineering and time parameters of received radio emissions and connected to each other by an information exchange channel, are located at a distance d from each other. At the first stage, each radar independently detects over-the-horizon radars and measures bearings on them and radio-technical and time parameters. According to the measured radio engineering and time parameters, radar identification with the catalog is carried out. The received information from each PRLS is processed to filter out information from closely located (within the radio horizon) objects and to clarify the working sector of the angles for pointing and tracking the PRLS of the selected over-the-horizon object. At the second stage, coordinated pointing of the radar antennas to the over-horizon object, selected at the first stage, is carried out, and the spatial and radio-technical parameters of the radar are refined and the false results of triangulation are eliminated. At the third stage, the difference between the angles of exposure of the radar of the radar is measured (by measuring the difference in the exposure times of the survey radar and the period of the survey of this radar) and the coordinates of the object are determined taking into account these angles. The difference in the angles of irradiation is determined in the following sequence: measure the time of passage of the maximum radiation pattern of the radar to the first radar, the time of passage of the maximum radiation to the second radar, determine the difference of the angles of radiation according to the formula ψ = (2π · Δt) / T _review , where T _review - radar survey period, measured or selected from the catalog, Δt is the difference in the passage times of the maximum radiation pattern of radar directions to the first and second radar, π = 3.14.

In more detail, the inventive method can be illustrated by a description of the operation of the system, which, for example, contains the first and second passive radar stations PRLS 10 and PRLS 11, spaced from each other at a direct line of sight (figure 4). Each passive radar station (Fig. 3) contains a narrowly directed mirror antenna 12 with a drive 23, the irradiator of which is connected by a rotating waveguide to the input of a low-noise high-frequency amplifier UHF 16, and the antenna 13 of the reception compensation channel along the side and background lobes connected to the compensation channel amplifier side and background petals of UK 18. UHF 16 and UK 18 are made on low-noise transistors. The outputs of the UHF 16 and UK 18 are connected to a multi-channel receiver MPU 17, which is a combination of multi-channel frequency broadband direct amplification receivers, with which microwave signals are amplified, filtered and detected. The outputs of the MPU 17 are connected to the device for the primary processing of information and measuring the carrier frequency, duration, amplitude and time of reception of the radar signals POI 19, in which analog-to-digital conversion is carried out on all channels of the MPU 17, excluding signals received from the side and background lobes and from active radar, and the measurement of monopulse radio parameters (carrier frequency, pulse duration, relative level) of the selected signals. POI 19 via a data bus is connected to a device for statistical information processing and bearing measurement, pulse repetition period, series duration and series repetition period (secondary information processing device) VOI 20, in which information about the detected radiation is generated from a set of several pulses with measurement of the pulse repetition period, the duration of the series, the period of repetition of the series, the time of reception of each pulse and the average bearing, and for the totality of the radio and time parameters - for the catalog gu radar identification and the carrier object. VOI 20 through I / O ports is connected to a device for mutual information exchange and time synchronization VZOI 14, a control unit УУ 21 and a device for calculating the difference in the angles of exposure of a radar antenna of passive radar stations and the coordinates of detected radar stations VU 22. VZOI 14 is designed to exchange information about detected radar radar 10 and radar 11. This information includes the classification code of the radar installed in the catalog, a set of radio and time pairs ters radio emission and the average bearing. In UU 21, the fact of detection by both radars of the same radar is ascertained and a decision is made on synchronous guidance and tracking of this radar, measurement of the difference in the angles of exposure and determination of the coordinates of the radar carrier object. UU 21 is connected to a drive 23 of a narrow-directional mirror antenna and VU 22, which in turn is connected to VZOI 14. In VU 22, according to information about the time of the beginning and end of the reception of a series of pulses received by both radars for one review period, and the period of the radar review, the difference is calculated angles of radiation and the coordinates of the radar carrier object are determined.

Each of the radar stations first independently searches for over-the-horizon radars in a given sector or in the all-round viewing mode. If any radar radar is detected, the parameters of its signals (bearing, carrier frequency, duration and pulse repetition period) are transmitted to the second radar. Upon detection of the second radar radar, synchronous tracking of the detected radar by both radar stations and measurement of its viewing period begins. On both PRLS, the arrival time of the first and last pulses of the series for one review period is recorded. The difference in the angles of irradiation ψ (Fig.2) is determined from the following relationships. The maximum passage time of the radiation pattern of the direction radar to the first radar is determined from the expression t ₁ = 1/2 (t _k1 -t _n1 ), where t _k1 is the arrival time of the last pulse of the series, recorded on the first radar, t _n1 is the arrival time of the first pulse of the series . The maximum transit time of the direction diagram to the second PRLS is t ₂ = 1/2 (t _k2 -t _n2 ), where t _n2 is the arrival time of the last pulse of the series recorded on the second PRLS, t _n2 is the arrival time of the first pulse of the series recorded on the second PRLS . The difference Δt = t ₂ -t ₁ is equal to the maximum time chart passage direction from a first direction to CLDP the second CLDP where ψ = (2π · Δt) / _{actual situation review} T, where T _{actual situation review} - the period of surveillance radars, measured or selected from the catalog. Since the review time T _{review is} incomparably longer than the pulse duration and the pulse repetition period of the radar, the error in measuring the angle ψ is quite small, especially when averaged over the results of several measurements, and will be significantly lower than the error in direct measurement of this angle (Fig. 1). At small angles ψ, which practically takes place when the radar is located at line of sight, the range to the radiating radar equidistant from both radar (α = 1 / 2π) is uniquely determined by the formula D = 1 / 2d / sin1 / 2ψ≈d / ψ, where d is the distance between the PRLS. In the general case, for α ≠ 1 / 2π, we can assume that D = d · cosα / ψ. From figure 1 it can be seen that the error in measuring the distance to the emitting radar with triangulation location increases significantly with increasing R due to the increase in the area of errors (quadrangle C1, C2, C3, C4). When positioning using the inventive method, the error in determining the range does not depend on the error in direction finding, which at large ranges of over-horizon objects-carriers of the radar can reduce the resulting measurement error of the range.

Claims (3)

1. A method for determining the sources of radio emission, mainly objects from the radiations of their radar stations, comprising detecting radiation and measuring bearings using at least two spaced passive radar stations (RLS) and calculating the coordinates of the sources of radio emission using the triangulation method, characterized in that location is carried out in three stages, at the first stage, on each PRLS search and detection of over-the-horizon objects by their radiation Radars, measure the radio and temporal parameters of radar radiations, identify the radars with over-horizon objects by radio-frequency parameters of the radar and bearing and switch to the continuous tracking mode of these objects, while filtering out information from objects located within the radio horizon obtained from each radar, specify the working sector angles for pointing and tracking the selected over-horizon object; at the second stage, at least two PRLS provide continuous tracking of the selected at the first stage of an over-the-horizon object, and record the time of reception of each radar pulse of this object, at the third stage, the radar angles of the main radar of each radar and the distance to the horizontal object are determined using the measured radars of bearings and the reception times of each pulse of the radar that are used, using the triangulation method taking into account the difference in exposure angles. 2. The method according to claim 1, characterized in that the difference in the angles of radiation is determined in the following sequence: the time of passage of the maximum radiation pattern of the radar to the first radar is measured, the time of passage by the maximum of the radiation pattern to the second radar, the difference of the angles of radiation is determined by the formula ψ = ( 2π · Δt) / _{actual situation review} T, where T _{actual situation review} - the period of surveillance radars, measured or selected from the catalog, Δt - time passage maximum difference radar chart radiation directions of the first and second CLDP, π = 3,14. 3. A passive radar station that contains antennas for the side and background lobe compensation channel, a narrowly directed mirror antenna, a low-noise high-frequency amplifier, a multichannel receiver, a primary information processing device and measurements of the carrier frequency, duration, amplitude and time of reception of signals from a detected radar station, a device for statistical processing of information and measurement of bearing, repetition period, series duration and series repetition and pulses, the second input-output of which is connected to the first input-output of the device for mutual exchange of information of passive radar stations about the detected radar stations and time synchronization, the third input-output is connected to the first input-output of the device for calculating the difference in the angles of exposure of the detected radar station of the antennas of passive radar stations the fourth input-output is connected to the first input-output of the control device, the second input-output of the control device is connected to the second input ohm-output of the device for calculating the difference of the angles of exposure of the detected radar antennas of passive radar stations, the third input-output of which is connected to the second input-output of the device for the mutual exchange of information of passive radar stations about the detected radar stations and time synchronization, the third output of the control device is connected to the drive narrowly mirror antenna, the irradiator of which is connected to the input of a low-noise high-frequency amplifier, the output of the amplifier anal compensation side lobes and background is coupled to the second input multichannel reception device, wherein the antenna channel compensation on the reception side lobes and back-end amplifier connected to the channel compensation of the side lobes and background.

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