Hydrolocation system of hydroacoustic station |
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IPC classes for russian patent Hydrolocation system of hydroacoustic station (RU 2458357):
         
 Acoustic parametric receiver / 2445642
Acoustic parametric receiver has a high-frequency voltage generator 1 connected to an acoustic transducer 2, which is in acoustic contact through an acoustic waveguide 3, the boundaries of which are transparent for a low-frequency acoustic signal and not transparent for a high-frequency acoustic signal, with a wideband acoustic transducer 4, connected through series-connected selective amplifier 5, phase changer 6, phase detector 7, attenuator 8, with a recorder 9. The second input of the phase detector 7 is connected to the output of the high-frequency voltage generator 1. The broadband acoustic transducer 4 is connected through series-connected resonance amplifier 10 and amplitude detector 11, to the control input of the selective amplifier 5. The output of the phase detector 7 is connected through an integrator 12 to the control input of the phase changer 6. Outputs of the control unit 13 are connected to the control inputs of the high-frequency voltage generator 1, the resonance amplifier 10, the attenuator 8, the recorder 9 and the second control input of the selective amplifier 5.
 Method of determining bearing of noisy object / 2444747
Method involves receiving an acoustic signal during "electric" rotation of the beam pattern of components x and y of a composite receiver consisting of a vector receiver and a hydrophone. The received signal undergoes analogue-to-digital conversion via Hilbert or Fourier transform with subsequent conversion of the signal into analytical form. Further, the ratio of the imaginary part of the signal to the real part is calculated and that ratio is used to estimate the phase difference between acoustic pressure p(t) and orthogonal components of particle velocity
 Apparatus and method for determining direction of audio source by diver / 2439602
Signal from a source is received at two nondirectional antennae at a distance of λ/4 from each other. The signal from the first antenna is transmitted to the input of an automatic gain control (AGC) amplifier and the signal from the other antenna is delayed by a quarter-period is summed up with the signal from the first antenna. The summation results in formation of a cardioid-type beam pattern. The resultant signal is transmitted to the control input of the AGC amplifier, the gain of which is inversely proportional to the control signal level. As a result, a signal reaches the headphones of the diver, said signal becoming maximum if the diver turns such that the line connecting the right and left side antennae turns in the direction of the source.
 Apparatus for detecting composite broad-band frequency-modulated signals with filtration in scale-time domain based on discrete wavelet transform / 2439601
Apparatus has an analogue-to-digital converter (1) whose output is connected to the input of a recirculator (2). The output of the recirculator is connected to the first input of a discrete wavelet transform computer (3). The wavelet transform output is connected to the input of a fast Fourier transform computer (8), the output of which is connected to the first input of a complex multiplier (9), the output of which is connected to the input of an inverse fast Fourier transform computer (11), the output of which is connected to the input of a squared absolute value computer (12), the output of which is connected to the input of a threshold device (13), the output of which is the output of the apparatus; a control device (14), the outputs of which are connected to control inputs of the analogue-to-digital converter (1), the recirculator (2), the discrete wavelet transform computer (3), a multiplier (5), an inverse discrete wavelet transform computer (7), the fast Fourier transform computer (8), the complex multiplier (9), the inverse fast Fourier transform computer (11) and read-only memory (4, 6, 10).
 System for determining coordinates of underwater objects / 2437114
Coordinate system is created from GIB buoys with base length of 1-3 km, which receives ping signals of underwater objects, synchronised with GPS clocks and time-spaced. Through correlation reception, the GIB buoys determine lag time from each object and relay these data to a control station. Based on the lag time and data on hydrostatic pressure on the underwater object, the control station calculates coordinates and displays the position of each object.
 Device to compensate for wave front curvature / 2431153
Proposed device represents adaptive system to allow optimising antenna phase reception of acoustic signals in Fresnel range. For this, proposed device comprises multi-component cylindrical antenna with N receiving channels. It differs from known designs in that it incorporates additionally HF signal generator and HF radiator and allows every preamplifier to switch over to frequency multiplexer mode. Said distinctive features allow heterodyning received useful HF signal and optimising antenna phase reception of acoustic signals with curved wavefront.
 Method of determining heading angle to radiation source from mobile subsurface object and device for realising said method / 2402785
Method involves generation and emission from a source of a harmonic signal with frequency ω, reception of an acoustic signal using a set of N≥8 hydrophones which form a circular measuring base directed into the horizontal plane, picking up quadrature components of the complex envelope of received acoustic signals, measurement of the phase of acoustic signals, preliminary phasing of the measuring base into N directions passing through the centre of the measuring base and each of the N hydrophones, determination of the direction which corresponds to the maximum of the signal and a hydrophone lying in that direction, calculation of the heading angle to the source in a local coordinate system associated with the measuring base using corresponding formulas. The hydrophone lying in the direction of the signal maximum is taken as the first hydrophone. The mobile subsurface object is also fitted with a pair of hydrophones spaced out in a diametrical plane along the mobile subsurface object at a distance of 1≤λ/4σθ. After calculating the bearing, the heading angle β0 to the source is calculated using formula β0=β1±θ0, σβ0=σβ, where β1 is the heading angle of the first hydrophone of the circular measuring base, the sign (+) is taken for the heading angle of the starboard side, the sign (-) is taken for the heading angle of the port side, σβ0 is the error in determining the heading angle, σθ is the bearing measurement error. The mobile subsurface object then synthesises a beam path on which the condition β0=180°+σθ is satisified, and a traversing path on which the condition β0=±90°+σθ is satisfied. Further, phase difference of acoustic signals Fm received using an extra pair of hydrophones is measured on the traversing path at time moments tm, m=1-M. The values of phase difference of acoustic signals Fm(tm) measured on the acoustic path are approximated with a linear function F=a(t-t0). Parametres a are determined through a least-squares method using corresponding formulas, and the true heading angle to the source at point t=t0 is determined using formula
 Device for detection of narrow-band noise hydroacoustic signals based on calculation of integral wavelet-spectrum / 2367970
Invention is related to the field of hydroacoustics, namely to devices for detection of narrow-band noise hydroacoustic signals (with spectral density of power in the form of separate discrete components or their scales) at the background of additive noise. Invention is based on calculation of continuous wavelet transformation of input process on the basis of complex analytical wavelet, relative band of amplitude spectrum of which matches relative band of spectral density of detected signal power. Device comprises analog-digital converter (ADC) 1, recirculator 2, the first calculator of fast Fourier transform (FFT) 3, complex multipliers 4.1 - 4.M, scaling devices 5.1 - 5.M, device of complex conjugation 6, device of negative frequencies nulling 7, the second calculator FFT 8, permanent memory (PM) 9, calculators of reverse FFT 10.1 - 10.M, calculator of module square 11, averaging device 12, threshold device 13, control device 14.
 Method for protection of water barriers / 2364883
Invention is related to hydroacoustics and may be used for protection of objects from the barrier side in water medium. According to method, signal is generated from hydroacoustic antenna arranged in the form of piezoelectric cable sections, ends of which are connected to radio frequency cable with the help of matching devices fed from common source, signal voltage is picked up from loading resistor and is sent through separating capacitor to inlet of alarm signal generator, object parametres are identified by results of analysis of spectral and time variation of signal.
 Method and system of determining trajectory of supersonic projectile / 2358275
Present invention can be used for determining the trajectory of a supersonic projectile. At least the initial part of signals is measured, containing information only on impact wave, using five or more acoustic sensors, spread out in space such that they form an antenna. From this measured initial part of signals, the difference in arrival time for a pair of sensors is determined. A genetic algorithm is applied to the initial chromosome, which contains initial estimated parameters of the projectile trajectory. For a given number of generations, projection errors are calculated for solutions, obtained from chromosomes from the genetic algorithm. The ratio of solution with the least values of projection errors to the ambiguous solution is calculated, and if this ratio is greater than a given value, the solution with the least value of calculated projection error is chosen as the correct trajectory of the projectile.
 Apparatus for hydroacoustic imaging of underwater space in limited visibility conditions / 2457145
Invention relates to hydroacoustic equipment and can be used as part of diving equipment. The apparatus has a sealed housing in which there is an antenna unit, a radiated signal generating unit, a received signal processing unit, as well as an acoustic image graphic display connected by a cable line to the output of the received signal processing unit. The antenna unit has, in one plane perpendicular to the longitudinal axis of the sealed housing, radiating and receiving multi-element arrays in form of mutually perpendicular lines. The radiated signal generating unit has series-connected generator, tapped delay line and multichannel amplifier whose output is connected to the radiating multi-element array. The received signal processing unit has, connected in series to the output of the receiving antenna array, a receiving multichannel amplifier, an analogue-to-digital converter, a beam pattern former and a correlation function calculating unit whose second input is connected to the output of the generator. The acoustic image graphic display unit has a video controller connected by a cable line to the output of the correlation function calculating unit, a graphic display connected to the output of the video controller, and a control panel connected to the input of the video controller.
 Method of measuring distance to monitored facility / 2456635
Periodic pulsed acoustic signal is generated and emitted at the monitored facility by a vertically aligned four-module antenna mounted on the seabed. Antenna emission is synchronised with zero time at the reception point on the monitored facility. The signal is received at the monitored facility by two receivers. One of the receivers lies directly on the ground and is a vector receiver at whose output the vertical and horizontal components of the oscillating velocity vector are measured. The second receiver is a non-directional acoustic pressure receiver. Group lag time is determined from the measured parameters while preliminarily determining time intervals. The unknown distance to the monitored facility is calculated using invariant velocity which is equal to the velocity of the bottom wave, the group time and preliminarily measured density and sound velocity in the bottom water layer, density and velocity of bottom waves in the ground.
 Method of navigating submarine object using hydroacoustic navigation system / 2456634
Navigation base of M hydroacoustic transponders with different response frequencies and a hydroacoustic transceiver mounted on the navigation object are used to measure time intervals for propagation of signals with subsequent conversion thereof to distance between the submarine object and the hydroacoustic transponders. On the submarine object, a drifting station and a bottom station, a central receiving array is formed from M hydrophones placed on axes X and Y; outermost hydrophones are placed on each axis at distance 1-1.5 m from the point of intersection of axes X and Y, wherein acoustic signals received by the outermost hydrophones in each line of hydrophones are used for accurate measurement of the component of the direction of arrival of acoustic waves, and acoustic signals received by M hydrophones of the central part of the array of M hydrophones are used to eliminate errors by a whole number of wavelengths when measuring the full phase difference between the outermost hydrophones; the drifting station is connected mechanically and electrically to the bottom station.
 Method of parametric reception of waves of different physical origin in sea medium / 2453930
Invention relates to hydroacoustics and may be used in long-range monitoring hydroacoustic stations. Proposed method comprises producing nonlinear interaction zone and parametric conversion of elastic pumping waves with measured data signals. Radiating and receiving antennas of measuring system are located on opposite boundaries of sea medium controlled section to produce, there between, zone of nonlinear interaction and parametric conversion of elastic pumping waves with measured data signal. Pumping waves interacting with measured data signals are received and amplified in the zone of parametric conversion to transfer their frequency-time scale in high-frequency range and to make narrow-band spectral analysis. Then, parametric components of total or differential frequency are isolated to reestablish characteristics of initial data signals.
 Method of measuring distance to monitored facility / 2452979
Periodic pulsed acoustic signal is generated at the monitored facility using a vertically aligned two-module antenna whose modules lie symmetrically about the surface of the sea bed and are excited in antiphase. The antenna is mounted at the sea bed. Antenna emission is synchronised with zero time at the reception point on the monitored facility. The acoustic signal is received at the monitored facility using two receivers. One of the receivers lies directly on the ground and is a vector receiver at whose output the vertical and horizontal components of the oscillating velocity vector are measured. The second receiver is a non-directional acoustic pressure receiver. Group lag time is determined from the measured parameters while preliminarily determining time intervals. The yaw angle at the reception point is determined based on the measured values of the component of the oscillating velocity vector. The unknown distance to the monitored facility is calculated using invariant speed equal to the speed of the bottom wave and the group lag time.
 Method of measuring distance to monitored facility / 2452978
Periodic pulsed acoustic signal is generated at the monitored facility using a vertically aligned two-module antenna whose modules lie symmetrically about the surface of the sea bed and are excited in antiphase. The antenna is mounted at the sea bed. Emission of the acoustic signal is synchronised with zero time at the reception point on the monitored facility. The acoustic signal is received at the monitored facility using two receivers. One of the receivers lies directly on the ground and is a vector receiver at whose output the vertical and horizontal components of the oscillating velocity vector are measured. The second receiver is a directional acoustic pressure receiver. The distance to the monitored facility is determined from the measured parameters, based on the pre-measured density and sound speed in the water bottom layer, as well as density and speed of longitudinal waves in the ground and the predetermined value of the frequency parameter.
 Method of measuring distance to monitored facility / 2452977
Periodic pulsed acoustic signal is generated at the monitored facility using a vertically aligned four-module antenna whose modules are arranged in pairs symmetrically about the surface of the sea bed, wherein the top and bottom modules are excited in antiphase with respect to the other two modules lying in between them. The antenna is mounted at the sea bed. Antenna emission is synchronised with zero time at the reception point on the monitored facility. The acoustic signal is received at the monitored facility using two receivers. One of the receivers lies directly on the ground and is a vector receiver at whose output the vertical and horizontal components of the oscillating velocity vector are measured. The second receiver is a directional acoustic pressure receiver. Group lag time is determined from the measured parameters while preliminarily determining time intervals. The yaw angle at the reception point is determined based on the measured values of the component of the oscillating velocity vector. The unknown distance to the monitored facility is calculated using invariant speed equal to the speed of the bottom wave and the group lag time.
 Method of transmitting telemetric information for hydroacoustic navigation system / 2452976
Telemetric information for a hydroacoustic navigation system is transmitted via an information message. The information message has a complex structure consisting of frames and packets, which enables to transmit data of different volume depending on the needs of the system. Only variable data are transmitted. Information is transmitted through composite phase-shift keyed signals.
 Method for parametric reception of waves of different physical nature in marine environment / 2452041
Disclosed is a method for parametric reception of waves of different physical nature in a marine environment, involving generation of elastic pumping waves with measured information signals the medium of the operating zone of nonlinear interaction and parametric transformation. In the disclosed method, transmitting and receiving antennae of the measuring system are placed on opposite boundaries of the monitored area of the marine environment. A zone of nonlinear interaction and parametric transformation of elastic pumping waves with measured information signals is formed in between. Pumping waves are received by at least two omnidirectional receivers spatially spaced apart in the horizontal plane and then amplified in a band from zero to the sum frequency of pumping waves and information signals. Through subsequent analysis, parametric components of the sum or difference frequency is selected, from which, based on the parametric and frequency-time conversion of the pumping waves, the initial characteristics of the measured information signals are restored.
 Method for parametric reception of waves of different physical nature in marine environment / 2452040
Disclosed is a method for parametric reception of waves of different physical nature in a marine environment, involving generation of elastic pumping waves with measured information signals the medium of the operating zone of nonlinear interaction and parametric transformation. A parametric antenna which scans in the horizontal plane is formed in the coverage area of a receiving antenna. Pumping waves which have interacted with the measured information fields are received in continuous mode, amplified in a parametric transformation frequency band, their time scale is transferred into a high-frequency domain and narrow-band spectra are measured. Parametric components of the lower sideband are selected and recorded, from which, based on parametric and frequency-time conversion of the pumping waves as well as the location of the parametric antenna, characteristics of the measured information fields are restored and measured.
 Transducer of velocity projections with respect to vehicle / 2246738
According to the first version, the device comprises four single-beam Doppler velocity pickups, two circuits for adding frequencies, three AND circuits, and control unit. According to the second version, the device has four single-beam Doppler velocity pickups, two circuits for adding frequencies, two circuits for subtracting frequencies, six AND circuits, and two control units. According to the third version, the device comprises four single-beam Doppler velocity pickups, two circuits for adding frequencies, four circuits for subtracting frequencies, nine AND circuits, and three control units.
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FIELD: physics. SUBSTANCE: disclosed system is based on two parts: an active hydrolocation channel and a noise direction-finding channel. The active hydrolocation channel has series-connected probing signal generating device 1, generating device 2 and transmitting antenna 3, series-connected receiving antenna device 4, target echo signal processing device 5 and device 6 for measuring the radial component of the speed of the target, a device 7 for measuring range to the target, a unit 8 for determining angular speed and a unit 9 for more precise definition of the bearing and controlling the position of the antennae of the channel. The noise direction-finding channel has series-connected receiving antenna device 10, noise direction-finding signal processing device 11 and bearing measurement device 12. EFFECT: high accuracy of determining motion parameters of a target. 2 dwg
The invention relates to sonar technique, namely, sonar systems, and can be used in the detection of underwater objects and measuring their coordinates and other parameters of motion. Known the hydroacoustic system that implements the method of automatic tracking maneuvering target that is protected by RF patent No. 2260197, CL G01S 13/66, 2003, It contains a device for the formation of the probing signal, transmitting antenna, the device processing the echo signal, a measuring device bearing on the destination device for measuring the radial component of the target speed, the meter bearing target mode samplemovie and measuring the rate of change of bearing. All of these devices that are similar in the composition of the claimed system. Factor hindering the achievement of this technical result is achieved in the inventive system are the high cost of time (a large number of cycles of the radiation-receiving active sonar) to determine the motion parameters of the target with reasonable accuracy. Also known sonar system hydroacoustic stations containing the forming device probing signal generating device, receiving and transmitting antennas, the device processing the echo signals, the path samplemovie, the communication unit sist what we sonar systems ship [Evtuhov A.P., Kolesnikov A., E. Korepin and other Reference hydroacoustics. 2nd ed. - Leningrad: Sudostroenie. - 1988, p.18-25, 27-29]. All of the elements of this system sonar included in the composition of the claimed system. Factor hindering the achievement of the technical result is achieved in the inventive system are quite limited functionality of the system. In particular, the system does not allow you to determine the speed and course objectives, required for its qualification. Closest to the technical nature of the claimed (prototype) is a sonar system that is protected by RF patent No. 2393503, CL G01S 15/00, 2009, containing the transmitting antenna tract active sonar (AGL), receiving antenna device paths AGL and samplemovie, the generating device, the device forming the probing signal, the device processing the echo signals from the target, the device signal processing path samplemovie, the device bearing measurement path samplemovie unit determine the rate of change of bearing, the device measures the distance to the target, the device measuring the radial component of the target speed, the transmitter and the communication unit with the vehicle systems vehicle. This system is based on measuring the bearing to the target using the path noise reduction, downstream and on radiation in the direction of the measured bearing tract AGL, the measurement method all the distance to the target, determining the rate of change of bearing and conversion of measured parameters in the speed and course of the target. Characteristics in common with the features of the proposed system, all the listed signs of a prototype system. Factor hindering the achievement of system-prototype technical result achieved in the inventive system is the relatively low accuracy of determination of parameters of target motion. It is due to the fact that the determination of the parameters of target motion in this system is based on measuring the bearing of the goal path samplemovie, and this measurement is carried out rather rudely. Technical problem on which the invention is directed, is to improve the accuracy of determination of parameters of target motion. This technical result is achieved by the fact that in the known system sonar sonar station entered the unit specification bearing and control the position of the antennas, and the antenna tract AGL configured to control the position in the plane direction finding receiving antenna device path AGL made on the basis of two partial antennas, acoustic axis of which is expanded in the plane direction finding by an angle approximately equal to the width of the main lobe of the directivity, the second is th output of the receiving antenna devices tract AGL connected to the first input unit clarification bearing and control the position of the antennas, the third output to the input of the unit determine the rate of change of the bearing and the sixth input of the transmitter, and the control input to the second control the output unit clarification bearing and control the position of the antennas, the second input is connected to the output of the device bearing measurement, and the first control output to the control input of the transmitting antenna. To achieve a technical result in the system sonar sonar station, containing sequentially enabled device for the formation of the probing signal, the generating device and transmitting antenna path samplemovie containing series-connected antenna device, the processing device signals samplemovie and device for measuring bearing, is connected by its output to the second input generating device sequentially included receiving antenna device path active sonar, the device processing the echo signal and device for measuring the radial component of the target speed, the controller can determine the rate of change of bearing, the device measures the distance to the target, the first and the second input of which is connected to the second output device for processing the echo signals, and the device forming the probing signal, respectively, the communication unit with the vehicle systems of the carrier and the transmitter, the first and the second input of which is connected to the outputs of the block to determine the rate of change of bearing and device for measuring the distance to the target, respectively, the third input - output device for measuring the radial component of the target speed, and the fourth and fifth inputs respectively to the first and second outputs of the unit for communication with vehicle systems vehicle entered the unit specification bearing and control the position of the antennas, and the antenna tract active sonar is configured to control the position in the plane direction finding receiving antenna device path active sonar is made on the basis of two partial antennas, acoustic axis of which is expanded in the plane direction finding by an angle approximately equal to the width of the main lobe of the directivity, the second output of the receiving antenna devices tract active sonar connected to the first input unit refinement of the bearing and control the position of the antennas, the third output to the input of the unit determine the rate of change of the bearing and the sixth input of the transmitter, and the control input to the second control the output unit clarification bearing and control the position of the antennas, the second input is connected to the output of the device bearing measurement, and the first control output to the control input of the transmitting antenna. The invention is illustrated by the drawing, which shows: - figure 1 - structural diagram of the inventive system; - figure 2 - directivity pickup the aqueous antenna device path AGL. The proposed system consists of two parts: the path AGL and path samplemovie. Tract AGL contains consistently enabled device 1 forming the probing signal, the generating device 2 and the transmitting antenna 3, sequentially enabled receiving antenna unit 4, unit 5 processing the echo signals from the target and the device 6 measuring the radial component of the target speed, the device 7 measures the distance to the target, the first and second inputs of which are connected with the second output device 5 and 1, respectively, block 8 determine the rate of change of bearing, the input of which is connected to the third output device 4, and the block 9 clarify the direction and control of an antenna path, the first input connected to the second output device 4 and the first and second control outputs - control inputs of the antenna 3 and the device 4, respectively. The path samplemovie contains consistently included receiving antenna device 10, the device 11 of the signal processing samplemovie and the device 12 bearing measurement, the output of which is connected with the second input unit 9 and unit 2 tract AGL. In addition, the system includes a block 13 communication with vehicle systems vehicle and the transmitter 14, the first, second and third inputs of which are connected respectively with the output unit 8 output 7 output device 6, the fourth and fifth inputs respectively from the first and second outputs of the block 13, and the sixth input to the third output device 4. The system is as follows. The signals from the noise sources goals are accepted by the device 10 and are processed in the device 11. Upon detection of the noise sources target device 12 being measured raw values bearing PGon the detected target. The measured value of PGoutput device 12 is supplied to the second inputs of the devices 2 and 9. Tract all included in the work on radiation in the direction of the detected path samplemovie goals. The device 2 reproduces generated by the device 1 of the probing signal with a high level of power. This output device 2 receives the input of the antenna 3 and is radiated in the direction of the detected target. Unit 9 sets the antenna 3 in such position that the radiation is in the direction to the target. This direction is set by the signal corresponding to the value of PGreceived at the second input unit 9 from the output device 12. Synchronously with the antenna 3 unit 9 sets the position of the device 4 so that it took the signals from the same direction in which the radiated signal antenna 3. Reflected from the target signals are accepted by the device 4 and with it the first pic is ouput to the input device 5. Clarifying rough values of PGthe bearing is carried out with the help of block 9 and the device 4. The device 4 includes two narrow partial antenna. Their acoustic axes are shifted one relative to the other in the plane direction finding about the width of the main lobe of the directivity. The device 4 is formed sum and difference of the directional characteristics of partial antennas. Figure 2 shows a typical partial, total and differential directivity of the antenna device 4. On Figo specifications F1and F2orientation of partial antennas, PIGB - total feature F1+F2orientation and on FIGU - differential characteristic of F1-F2orientation. On the x-axis, when this is the angle φ is the angle of deviation of the direction of arrival of the signal from ravesignal direction of the device 4 (the direction from which the signal levels received by the partial antennas with directional characteristics F1and F2the same). The total characteristic of F1+F2orientation is used to form the total signal, i.e. the sum of the signals received partial antennas. This signal from the first output device 4 is fed to the input device 5 for dal is Asa processing. Differential characteristic of F1-F2direction has the shape of a typical discriminatory (DF) characteristics. It is used for forming a difference signal equal to the difference between signals on the partial antennas. It is easy to see that the result of subtraction is proportional to the amplitude and the sign corresponds to the sign of the deviation of the direction of arrival of the signal from ravesignal direction of the device 4. A signal corresponding to this result, that is, the differential characteristic of F1-F2direction, from the second output device 4 is supplied to the first input unit 9. Unit 9 under the action of this signal generates the control signals, under the action of which the antenna 3 and the device 4 to change its position in the plane direction finding in such a way that the deviation ravesignal direction of the device 4 from the direction to the goal decreases. Changing the position of the antenna 3 is changed synchronously with the change of position of the device 4, its acoustic axis is automatically set to coincide with ravesignal direction of the device 4. Eventually ravesignal direction of the device 4 and the acoustic axis of the antenna 3 are coincident with the direction of the target, that is in full compliance with the exact value of PTbearing purposes. The device 4 with abgene internal sensor, signaling position ravesignal direction of the device 4. In steady state, when the signal on the second output device 4 is equal to zero or close to it, ravesignal direction of the device 4 coincides with the direction to the target. Internal sensor thus generates a signal corresponding to the exact value of PTbearing purpose. This value comes from the third output device 4 to the input unit 8 and the sixth input of the transmitter 14. Received at the input device 5 echo signal passes in it pre-processing. The results of this processing from the first output device 5 is fed to the input device 6, and from the second to the first input device 7, to the second input of which receives the clock pulse from the second output device 1. In the device 6 by measuring the radial component of VPtarget speed, and the measurement result is supplied from its output to the third input of the transmitter 14. In the device 7 measures the distance D to the target and the measurement result is supplied from its output to the second input of the transmitter 14. In block 8 is determined by the rate of change (derivative time) refined bearing From the first output unit 13 on the fourth WMO the transmitter 14 receives the rate To Nand from the second output unit 13 to the fifth input of the transmitter receives a velocity VHthe carrier-ship. The transmitter 14 are defined by the following parameters of target motion: - the total tangential component - the tangential component of velocity Vtpurpose; the speed V of the target; course To the target. The total tangential component the formula:
where D and The tangential component of velocity Vtthe target is calculated by the formula:
where PT- updated Peleng goals coming on the sixth input of the transmitter 14; VHand KH- the speed and course of the ship carrier, received respectively in the fourth and fifth inputs of the transmitter 14. Course and speed V targets are calculated by the formulas:
where VPradial component of the target speed, coming to the third input of the transmitter 14. The parameters K and V are received respectively in the first and second outputs of the transmitter 14 and further can the can be used for classification purposes. From equations (1)÷(4) it is easy to see that the accuracy of measurement of the parameters K and V target motion is largely determined by the accuracy of the bearing measurement goals. In the system-the prototype of this parameter is determined mode samplemovie, i.e. the accuracy of its measurement is determined by the value of PGand next is not specified. In the proposed system, the sonar is bearing target is determined in two stages. In the first stage, as in the system prototype is determined by the gross value of PGthe bearing. However in the future it is determined with the help of block 9 and the device 4. The result in the claimed system, the value of PTbearing is determined with much greater accuracy than in the system prototype. Consequently, in the proposed system and the parameters K and V movement goals are determined with greater accuracy than in the system prototype. System sonar sonar station, containing sequentially enabled device for the formation of the probing signal, the generating device and transmitting antenna path samplemovie containing series-connected antenna device, the processing device signals samplemovie and device for measuring bearing, is connected by its output to the second input generating device sequentially included receiving antennas for the second device path active sonar, the device processing the echo signal and device for measuring the radial component of the target speed, the controller can determine the rate of change of bearing, the device measures the distance to the target, the first and the second input of which is connected to the second output device for processing the echo signals and devices forming the probing signal, respectively, the communication unit with the vehicle systems of the carrier and the transmitter, the first and second inputs of which are connected to the outputs of the block to determine the rate of change of bearing and device for measuring the distance to the target, respectively, the third input - output device for measuring the radial component of the target speed, and the fourth and fifth inputs respectively to the first and second the outputs of the unit for communication with vehicle systems a carrier, characterized in that it introduced the power specification of the bearing and control the position of the antennas, and the antenna tract active sonar is configured to control the position in the plane direction finding receiving antenna device path active sonar is made on the basis of two partial antennas, acoustic axis of which is expanded in the plane direction finding by an angle approximately equal to the width of the main lobe of the directivity, the second output of the receiving antenna devices tract active sonar is connected with the first in the Odom block clarify bearing and control the position of the antennas, the third output to the input of the unit determine the rate of change of the bearing and the sixth input of the transmitter, and the control input to the second control the output unit clarification bearing and control the position of the antennas, the second input is connected to the output of the device bearing measurement, and the first control output to the control input of the transmitting antenna.
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goal and result