CN216560976U - Small simulation equipment of SLQ-32 ESM - Google Patents
Small simulation equipment of SLQ-32 ESM Download PDFInfo
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- CN216560976U CN216560976U CN202123055286.8U CN202123055286U CN216560976U CN 216560976 U CN216560976 U CN 216560976U CN 202123055286 U CN202123055286 U CN 202123055286U CN 216560976 U CN216560976 U CN 216560976U
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Abstract
The utility model discloses a small simulation device of SLQ-32 ESM, comprising: the device comprises a direction finding antenna group, a servo rotary table, a signal processor, a servo control unit and a display control terminal. The servo turntable includes an azimuth turntable and a pitch turntable. The signal processor is arranged on the azimuth turntable, the azimuth turntable can rotate left and right, the pitching turntable can be arranged on the signal processor in a vertically rotating mode, and the direction-finding antenna group is arranged on the pitching turntable. The signal processor comprises four radio frequency receiving units, four signal processing units and a real-time control unit, wherein the four radio frequency receiving units are respectively connected with four direction-finding antennas, each radio frequency receiving unit is connected with one signal processing unit, and the four signal processing units are in communication connection with the real-time control unit; the servo control unit is in communication connection with the real-time control unit and is connected with the servo rotary table. The method can realize equivalent simulation of the SLQ-32 electronic reconnaissance equipment in a real test scene, and provides a real confrontation environment for equipment.
Description
Technical Field
The utility model belongs to the technical field of electronic countermeasure, and particularly relates to an SLQ-32 ESM small simulation device, which is used for realizing function level simulation of an SLQ-32 electronic reconnaissance device (ESM) under an electronic countermeasure test.
Background
An electronic countermeasure environment is established depending on a target range, and the method is an important way for testing the combat capability of modern army. With the improvement of the actual combat training level of the combat ability of the modern army in China, an electronic countermeasure environment is constructed and becomes an important support for the examination task of the combat ability of the normalized modern army.
The simulation of a realistic battlefield test environment needs to simulate various combat targets, 20 th century 70 s show the threat of anti-ship missiles increasingly, and in order to provide self-defense and terminal threat defense capability for surface ships, AN AN/SLQ-32 electronic reconnaissance system is developed and deployed by American naval. With continued sophistication and improvement, almost all U.S. surface vessels are now equipped with SLQ-32(V) electronic warfare systems. The system has the characteristics of high interception probability and short total reaction time. The primary function of the basic SLQ-32(V)1 is to provide warning, identification and direction finding for an adjacent radar-guided anti-ship missile; the prior art shows that this type is used for detecting omni-directional signals in band 3(I/J band), and also the literature states that it works in band (H/I/J band) and controls the foil strip interference emission device. The SLQ-32 is used as a carrier-based electronic warfare system of army equipment and has a significant threat to equipment of our part. In order to meet the requirements of development and training of equipment of our part, 1 set of SLQ-32 simulation equipment needs to be developed to form a confrontation situation. However, when such electronic devices are simulated, the working mode is limited, the coverage of the working frequency band is small, the cost of the device is high, and the requirements of battlefield electronic countermeasure cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an SLQ-32 ESM small simulation device, which realizes simulation of an SLQ-32 electronic reconnaissance device in an electronic countermeasure process, solves the problems of low fidelity, limited working mode and small coverage frequency band in the conventional real simulation, provides a real countermeasure environment for equipment, and is used for assisting the research and development of the equipment and improving the performance of the equipment.
In order to solve the technical problems, the utility model adopts the following technical scheme:
an SLQ-32 ESM miniature simulation device, comprising: the direction-finding antenna group comprises four direction-finding antennas and four pitching direction-finding antennas, the servo turntable comprises a direction turntable and a pitching turntable, the signal processor is arranged on the direction turntable and can rotate left and right, the pitching turntable can be arranged on the signal processor in a vertically rotating mode, the direction-finding antennas and the pitching direction-finding antennas are arranged on the pitching turntable, the signal processor comprises four radio frequency receiving units, four signal processing units and a real-time control unit, the signal input end of each radio frequency receiving unit is connected with one direction-finding antenna, the signal output end of each radio frequency receiving unit is connected with the signal input end of one signal processing unit, and the four signal processing units are all in communication connection with the real-time control unit, the two servo control units are in communication connection with the real-time control unit, one servo control unit is connected with the azimuth rotary table to drive the azimuth rotary table to rotate left and right, the other servo control unit is connected with the pitching rotary table to drive the pitching rotary table to rotate up and down, and the real-time control unit is in communication connection with the display control terminal.
Furthermore, the four direction-finding antennas form a direction-finding antenna array according to a magnitude-comparison direction-finding system.
Furthermore, each radio frequency receiving unit comprises a radio frequency front end, a down-conversion unit and a frequency synthesis unit, wherein the signal input end of the radio frequency front end is connected with one direction-finding antenna, the signal output end of the radio frequency front end is connected with the signal input end of the down-conversion unit, the signal output end of the frequency synthesis unit is also connected with the signal input end of the down-conversion unit, and the signal output end of the down-conversion unit is connected with the signal input end of a signal processing unit.
Furthermore, each radio frequency receiving unit further comprises a self-checking unit, a signal output end of the self-checking unit is connected with a signal input end of the radio frequency front end, and the self-checking unit is further in communication connection with the real-time control unit.
Furthermore, each signal processing unit comprises a high-speed A/D converter and an FPGA chip, the signal input end of the high-speed A/D converter is connected with the signal output end of the down-conversion unit, the signal output end of the high-speed A/D converter is connected with the FPGA chip, and the FPGA chip is in communication connection with the real-time control unit.
Furthermore, the signal processor comprises a case, and the radio frequency receiving unit, the signal processing unit and the real-time control unit are all located in the case.
Further, one of the two servo control units is disposed in the azimuth turntable, and the other servo control unit is disposed in the casing.
Further, the small simulation equipment with the SLQ-32 ESM further comprises an antenna housing, wherein the direction-finding antenna group, the pitching rotary table, the signal processor and the azimuth rotary table are all located in the antenna housing.
Furthermore, the real-time control unit is connected with the display control terminal through a photoelectric switch.
Furthermore, each servo control unit comprises a servo motor and a servo controller, the real-time control unit is in communication connection with the servo controller, and the servo controller is connected with the servo motor; one servo motor in the two servo control units is connected with the azimuth turntable, and the other servo motor is connected with the pitching turntable.
Further, the pitching angle range of the pitching direction-finding antenna is 0-85 degrees, and the instantaneous coverage angle range of the azimuth direction-finding antenna is 0-35 degrees.
Compared with the prior art, the utility model has the following beneficial technical effects: the small simulation equipment of the SLQ-32 ESM can complete equivalent simulation of electronic reconnaissance equipment in a ship-borne electronic warfare system SLQ-32 of American military equipment, realize passive reconnaissance of target signals, realize target guidance of interference equipment, meet the authenticity of electronic countermeasures, and greatly reduce construction cost and use and maintenance cost. In addition, the device can finish reconnaissance of information such as the azimuth, the pitching, the frequency and the like of the target with higher precision, the working mode is not limited, and the working frequency range is wider.
Drawings
FIG. 1 is a schematic structural diagram of a SLQ-32 ESM small simulation device according to an embodiment of the present invention;
FIG. 2 is a block diagram of an SLQ-32 ESM small simulation device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an SLQ-32 ESM simulation apparatus according to an embodiment of the present invention;
fig. 4 is a schematic view of amplitude versus direction finding.
Wherein: 1, a direction finding antenna group; 2, pitching the turntable; 3, a direction rotary table; 4 a signal processor; 5 a radome.
Detailed Description
The utility model is further described with reference to specific examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As mentioned above, the conventional SLQ-32 electronic reconnaissance equipment has the problems of low fidelity, limited working mode and small coverage frequency band when being actually simulated. Therefore, the utility model provides the SLQ-32 ESM small simulation equipment to realize equivalent simulation of the SLQ-32 type electronic reconnaissance equipment based on a real test scene in the electronic countermeasure process, ensure the real reliability of actual combat training tasks and ensure that the countermeasure test meets the set target.
The ESM simulation equipment is mainly used for completing the signal reconnaissance and interception of a tested target, acquiring the characteristic parameters and the direction information of the target and providing information support for own cooperative electronic interference equipment. When the ESM electronic reconnaissance equipment works, the equipment completes position and initial pointing deployment according to a test strategy and prior information, performs signal search on a designated airspace after the test starts, and provides target characteristic parameters such as signal frequency, pulse width, repetition frequency, target angle and the like for electronic interference equipment after sorting and identifying intercepted target signals. After the device intercepts the target signal, the device can switch to a tracking mode according to a preset strategy or a manual intervention mode to continuously track the tested target signal.
As shown in fig. 1, an SLQ-32 ESM small simulation device includes: the device comprises a direction finding antenna group 1, a servo turntable, a signal processor 4, two servo control units and a display control terminal.
The direction-finding antenna group 1 is used for receiving signals and detecting and receiving the signals. The direction-finding antenna group 1 consists of four direction-finding antennas, wherein two direction-finding antennas are arranged in the direction, and two direction-finding antennas are arranged in the pitching direction. The four antennas form a direction-finding antenna array according to a amplitude-comparison direction-finding system, and signals of X, Ku wave bands can be detected and received. And obtaining azimuth and pitch angle data by measuring the amplitude ratio of the target to the antenna aperture surface.
The amplitude comparison direction finding is that two antennas with half beam width are overlapped with each other by utilizing the characteristics of directional diagrams, so that the amplitude ratio of a target signal angle and two paths of signals becomes a fixed curve relation, namely an amplitude comparison curve (which can be calibrated and measured in advance), and the target signal angle can be directly obtained according to the amplitude comparison curve of the two antennas based on the measured amplitude information. The principle of amplitude versus direction finding is shown in fig. 4.
The servo rotary table comprises a direction rotary table 3 and a pitching rotary table 2, the direction rotary table 3 can rotate left and right, a signal processor 4 is arranged on the direction rotary table 3, the pitching rotary table 2 can be arranged on the signal processor 4 in a vertically rotating mode, a direction-finding antenna and a pitching direction-finding antenna are arranged on the pitching rotary table 2, and the angle positions of the direction-finding antenna and the pitching direction-finding antenna can be adjusted by enabling the direction rotary table 3 to rotate left and right and the pitching rotary table 2 to rotate vertically. Therefore, the spatial coverage and the follow-up tracking of the target signal are completed through the servo rotation.
The signal processor adopts a broadband digital receiver and simultaneously adopts a 4-path digital receiver to sample data.
As shown in fig. 3, the signal processor 4 includes four radio frequency receiving units, four signal processing units and a real-time control unit, wherein a signal input end of each radio frequency receiving unit is connected to a direction-finding antenna, a signal output end of each radio frequency receiving unit is connected to a signal input end of a signal processing unit, and the four signal processing units are all in communication connection with the real-time control unit.
The rf receiving unit, as shown in fig. 2, includes a rf front end, a down-conversion unit, a frequency synthesis unit, and a self-checking unit.
And the radio frequency front end is used for carrying out amplitude limiting amplification on the signals received by the direction-finding antenna and sending the 4 paths of amplified signals to the down-conversion unit for frequency conversion processing. To improve the sensitivity of the device, a radio frequency front end may be mounted at the rear end of the antenna.
And the down-conversion unit is used for carrying out multi-stage frequency conversion filtering and amplification processing on the 4 paths of signals amplified by the radio frequency front end to obtain intermediate frequency signals, and inputting the intermediate frequency signals into the corresponding signal processing units.
And the frequency synthesizing unit is used for generating local oscillation signals required by frequency conversion and providing clock signals required by A/D (analog/digital) conversion for the signal processing unit.
And the self-checking unit is used for providing a self-checking signal, injecting the self-checking signal into the radio frequency receiving channel from the front end and calibrating the system and the microwave channel.
The utility model adopts a double-channel amplitude comparison mechanism, in order to reduce the influence of the consistency of receiving channels on the direction-finding precision as much as possible, a self-checking signal source is arranged at the rear end of an antenna, and a self-checking signal generated by the self-checking signal source is injected into a high-frequency front end, so that the calibration and self-checking functions of the performance of the detecting and receiving system are realized. The self-checking signal source generates radio frequency signals with required frequency, signal style and power under the control of the real-time control unit, and each functional module of the radio frequency receiving unit and the signal processing unit is coupled with corresponding radio frequency signals and amplifies, detects and collects the radio frequency signals, so that the working state of each functional module is judged.
And the signal processing unit is mainly used for measuring pulse parameters such as digital frequency measurement, arrival time, signal power and the like, forming a Pulse Description Word (PDW) and outputting PDW data to the real-time control unit.
The signal processing unit comprises a high-speed A/D converter and an FPGA chip.
The high-speed A/D converter is used for carrying out high-speed AD sampling on the input intermediate-frequency signal to obtain a digital signal.
The FPGA chip is connected with the high-speed A/D converter and used for carrying out pulse parameter measurement such as DDC, channelized filtering, digital frequency measurement, amplitude measurement, arrival time measurement and the like on the obtained digital signal to obtain PDW data and transmitting the PDW data to the real-time control unit.
And the real-time control unit is used for receiving the PDW data output by the signal processing unit, realizing amplitude comparison direction finding of the radiation signals according to amplitude comparison curves of the two antennas based on amplitude information of each channel in the PDW data, simultaneously carrying out signal sorting and identification according to the PDW data, and carrying out real-time control on the servo turntable and the radio frequency receiving unit.
The signal processor adopts four radio frequency receiving units to perform data sampling to obtain an intermediate frequency signal, high-speed A/D samples the input intermediate frequency signal, further digital signal processing is realized in an FPGA chip, processing of the acquired signal is realized based on a software radio technology, and DDC, channelized filtering, digital frequency measurement, amplitude measurement and arrival time measurement are performed on the digital signal to form PDW data. And transmitting the measured PDW data to the real-time control unit. The real-time control unit realizes amplitude comparison direction finding of the radiation signals according to amplitude comparison curves of the two antennas and amplitude information of each channel, pulse streams are sorted and identified through signal sorting, and a detection and receiving result can be provided for the cooperative interference equipment according to requirements.
In one embodiment, the signal processor includes a housing, and the rf receiving unit, the signal processing unit and the real-time control unit are all located in the housing, as shown in fig. 3.
And the display control terminal is connected with the real-time control unit and is used for setting equipment parameters and displaying the detection and reception results. As shown in fig. 3, the display and control terminal is located at a far end, and the real-time control unit is connected with the display and control terminal through the photoelectric switch.
The two servo control units are in communication connection with the real-time control unit and receive commands of the real-time control unit. As shown in fig. 3, the servo control units are connected to the servo turrets, one of which is connected to the azimuth turret and the other of which is connected to the pitch turret.
In one embodiment, one of the two servo control units is provided in the azimuth turret 3 to drive the azimuth turret 3 to rotate left and right, and the other servo control unit is provided in the housing of the signal processor 4 to drive the pitch turret 2 to rotate up and down.
Each servo control unit comprises a servo motor and a servo controller, the real-time control unit is connected with the servo controller, and the servo controller is connected with the servo motor. One servo motor in the two servo control units is connected with the azimuth turntable 3 and used for driving the azimuth turntable 3 to rotate left and right, and the other servo motor is connected with the pitching turntable 2 and used for driving the pitching turntable 2 to rotate up and down.
Through the embodiment, the four paths of radio frequency receiving units are respectively connected with the four receiving antennas, four paths of intermediate frequency signals after frequency conversion of the radio frequency receiving units are sent to the signal processing unit, the signal processing unit sends original measurement data to the real-time control unit for sorting after measuring the intermediate frequency signals, sorting results are sent to the display and control terminal for display, and meanwhile, control commands of the display and control terminal can be sent to the real-time control unit through a network cable to realize control over the whole system; the servo control unit is in communication connection with the real-time control unit and is connected with the servo rotary table and used for driving the servo rotary table to rotate.
As shown in fig. 1, the SLQ-32 ESM small simulation device according to the embodiment of the present invention further includes an antenna housing 5, and the direction finding antenna group 1, the pitching rotary table 2, the azimuth rotary table 3, and the signal processor 4 are all located in the antenna housing 5. The device of the utility model has different working modes according to the existence of the external guide information:
(1) without external guidance, the SLQ-32 ESM small simulation equipment mainly has two working modes:
the first working mode is as follows:
the mode can realize azimuth measurement under the setting of the external guide pitching angle and is used for realizing the transmission angle guide of the interference equipment. In this mode, azimuth measurement at a certain preset pitch angle is realized. And the ESM analog equipment carries out azimuth search, measures information such as frequency, amplitude, azimuth angle and the like of the signal and forwards the information to other equipment. The working process is as follows:
selecting and setting a working frequency range in an X frequency band or Ku frequency band working frequency range;
setting a servo pitch angle value (the pitch angle can be set to be in a range of 0-85 degrees, and the azimuth direction-finding antenna instantaneously covers 0-35 degrees);
starting azimuth search, rapidly rotating the azimuth, and outputting frequency, amplitude value and azimuth direction-finding angle value;
and updating information once every rotation of the azimuth (fastest 2 s), wherein the information comprises information of frequency, angle, pulse width and the like of the target. The information is displayed on a display control terminal, confirmation tracking can be carried out after each target is searched for 2-3 times, then an operator selects an interference target according to requirements, and the information of the target is sent to interference equipment.
And a second working mode:
the mode can realize the azimuth and pitching measurement under different pitching gear settings, and is used for realizing the pointing guidance of the shipborne active interference equipment. In the mode, the ESM simulation equipment carries out continuous azimuth search and pitch stepping search, measures information such as frequency, amplitude, azimuth angle and pitch angle of signals and forwards the information to other shipborne task equipment. This mode may be used to direct X, Ku the jamming device, the ESM simulating device, to operate time-shared with the onboard jamming device. The working process is as follows:
selecting and setting a working frequency range in an X frequency range or a Ku frequency range, and setting a pitch gear;
when the system starts to work, a pitch angle of a certain gear is selected, and the instantaneous coverage range of the pitch direction-finding antenna array is 35 degrees multiplied by 10 degrees (azimuth multiplied by pitch);
carrying out azimuth search, rapidly rotating the azimuth, and outputting a frequency value, an amplitude value and a direction-finding angle value;
the azimuth is always in a search mode, the pitching gear can be automatically or manually switched according to the target track, the measured target information forms an information list in display control and can be displayed on a situation map, after each target is searched for 2-3 times, software confirms the information list at a display control terminal, an operator manually selects the target needing interference according to a strategy, and the information is transmitted to other interference equipment for guiding.
(2) When external guidance exists:
and the external guide gives a set airspace, the ESM simulation equipment is guided to perform accurate direction finding in the airspace, and the measurement result guides the interference equipment. The working process is as follows:
selecting and setting a certain working frequency range in an X frequency band or Ku frequency band working frequency range;
receiving external guide data and pointing to a given airspace given by the external guide;
carrying out signal measurement, and outputting a frequency value, an amplitude value and a direction-finding angle value;
the measured target information forms an information list in display control, the information list can be displayed on a situation map, and an operator manually selects a target needing interference according to a strategy and transmits the information to interference equipment for guiding.
The small simulation equipment for the SLQ-32 ESM can realize equivalent simulation of the SLQ-32 electronic reconnaissance equipment based on a real test scene, not only meets the authenticity of electronic countermeasure, but also greatly reduces the construction cost and the use and maintenance cost. In addition, the device can finish the reconnaissance of the information such as the azimuth, the pitching, the frequency and the like of the target with higher precision, and has no limitation on the working mode and larger coverage range of the working frequency band.
The utility model provides experimental guarantee for the requirements of military equipment verification experiments, namely the establishment of a complex electronic countermeasure environment capable of simulating an actual combat state, the performance test of a weapon system and the army training under a vivid complex countermeasure environment.
The present invention has been disclosed in terms of the preferred embodiment, but is not intended to be limited to the embodiment, and all technical solutions obtained by substituting or converting equivalents thereof fall within the scope of the present invention.
Claims (10)
1. An SLQ-32 ESM miniature simulation device, comprising: the direction-finding antenna group comprises four direction-finding antennas and four pitching direction-finding antennas, the servo turntable comprises a direction turntable and a pitching turntable, the signal processor is arranged on the direction turntable and can rotate left and right, the pitching turntable can be arranged on the signal processor in a vertically rotating mode, the direction-finding antennas and the pitching direction-finding antennas are arranged on the pitching turntable, the signal processor comprises four radio frequency receiving units, four signal processing units and a real-time control unit, the signal input end of each radio frequency receiving unit is connected with one direction-finding antenna, the signal output end of each radio frequency receiving unit is connected with the signal input end of one signal processing unit, and the four signal processing units are all in communication connection with the real-time control unit, the two servo control units are in communication connection with the real-time control unit, one servo control unit is connected with the azimuth rotary table to drive the azimuth rotary table to rotate left and right, the other servo control unit is connected with the pitching rotary table to drive the pitching rotary table to rotate up and down, and the real-time control unit is in communication connection with the display control terminal.
2. The SLQ-32 ESM miniaturized simulation device of claim 1, wherein the four direction-finding antennas form a direction-finding antenna array according to a magnitude-comparison direction-finding system.
3. The SLQ-32 ESM small-scale simulation device according to claim 1, wherein each RF receiving unit comprises an RF front end, a down-conversion unit and a frequency synthesizer unit, a signal input end of the RF front end is connected to a direction-finding antenna, a signal output end of the RF front end is connected to a signal input end of the down-conversion unit, a signal output end of the frequency synthesizer unit is also connected to a signal input end of the down-conversion unit, and a signal output end of the down-conversion unit is connected to a signal input end of a signal processing unit.
4. The SLQ-32 ESM small-scale simulation device according to claim 3, wherein each RF receiving unit further comprises a self-test unit, a signal output end of the self-test unit is connected with a signal input end of the RF front end, and the self-test unit is further connected with the real-time control unit in a communication manner.
5. The SLQ-32 ESM small-scale simulation device according to claim 3, wherein each signal processing unit comprises a high-speed A/D converter and an FPGA chip, the signal input end of the high-speed A/D converter is connected with the signal output end of the down-conversion unit, the signal output end of the high-speed A/D converter is connected with the FPGA chip, and the FPGA chip is in communication connection with the real-time control unit.
6. The SLQ-32 ESM small simulation device of claim 1, wherein the signal processor includes a housing, and the rf receiving unit, the signal processing unit, and the real-time control unit are all located in the housing.
7. The SLQ-32 ESM simulation apparatus of claim 6, wherein one of the two servo control units is disposed in the azimuth turntable, and the other servo control unit is disposed in the housing.
8. The SLQ-32 ESM small simulation device according to claim 1, further comprising a radome, wherein the direction finding antenna group, the pitching turntable, the signal processor and the azimuth turntable are all located inside the radome.
9. The SLQ-32 ESM small-scale simulation device according to claim 1, wherein the real-time control unit is connected with the display and control terminal through an optoelectronic switch.
10. The SLQ-32 ESM small simulation device as claimed in claim 1, wherein each servo control unit comprises a servo motor and a servo controller, the real-time control unit is connected with the servo controller in communication, and the servo controller is connected with the servo motor; one servo motor in the two servo control units is connected with the azimuth turntable, and the other servo motor is connected with the pitching turntable.
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| CN202123055286.8U CN216560976U (en) | 2021-12-07 | 2021-12-07 | Small simulation equipment of SLQ-32 ESM |
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| CN202123055286.8U CN216560976U (en) | 2021-12-07 | 2021-12-07 | Small simulation equipment of SLQ-32 ESM |
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