CN114373357A - Semi-physical simulation system for simulating photoelectric attack and defense in indoor environment - Google Patents
Semi-physical simulation system for simulating photoelectric attack and defense in indoor environment Download PDFInfo
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- CN114373357A CN114373357A CN202210053932.7A CN202210053932A CN114373357A CN 114373357 A CN114373357 A CN 114373357A CN 202210053932 A CN202210053932 A CN 202210053932A CN 114373357 A CN114373357 A CN 114373357A
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Abstract
The invention provides a semi-physical simulation system for simulating photoelectric attack and defense in an indoor environment, which comprises a control computer, a laser target indicator, a laser seeker, a laser deviation-guiding interference machine, a guidance target, a deviation-guiding target and a scene simulation sand table, wherein the control computer is connected with the laser seeker; the scene simulation sand table comprises a separation plate; a landform model and a laser warning probe are arranged on the partition plate; the control computer is respectively connected with the laser seeker, the laser target indicator, the laser guidance deviation interference machine and the laser warning probe; the laser warning probe is connected with the laser deflection interference machine; the device comprises a control computer, a laser target indicator, a laser seeker, a laser deflection interference machine, a laser alarm probe, a guidance target and a deflection target, and the photoelectric active interference simulation is realized together. The method can simulate the photoelectric attack and defense process and the evaluation of the photoelectric active interference effect in an indoor environment, and provides reliable simulation data support for teaching and scientific research work in the field of photoelectric attack and defense.
Description
Technical Field
The invention belongs to the technical field of photoelectric countermeasure, and particularly relates to a semi-physical simulation system for simulating photoelectric attack and defense in an indoor environment.
Background
Photoelectric weapons have become an essential important means of combat in modern war, and in the last few high-tech local wars, photoelectric precision guided weapons have shown remarkable effectiveness and power. The photoelectric guided weapon has gradually become one of the most powerful modern weapons, and has formed a huge real threat to important military target and political and economic facilities, and this has also promoted the leap development of photoelectric attack and defense technique, and photoelectric reconnaissance, photoelectric interference, photoelectric anti-interference have become the research focus in the information war.
For testing the photoelectric attack and defense effect, the existing method is mostly realized by an outfield live ammunition test mode, the mode is high in cost and difficulty and is not suitable for developing deep research, and the outfield test cannot reflect the whole process of various photoelectric guidance and interference at one time.
Disclosure of Invention
The invention aims to provide a semi-physical simulation system for simulating photoelectric attack and defense in an indoor environment, which can simulate a photoelectric attack and defense process in the indoor environment, complete evaluation of photoelectric interference effect and provide reliable simulation data support for teaching and scientific research work in the field of photoelectric attack and defense.
In order to achieve the purpose, the invention adopts the following technical scheme:
a semi-physical simulation system for photoelectric attack and defense in an indoor environment comprises a control computer, a laser target indicator, a laser seeker, a laser deviation-guiding interference machine, a guidance target, a deviation-guiding target and a scene simulation sand table;
the scene simulation sand table comprises a separation plate; a topographic and geomorphic model and a laser warning probe which interfere with a field are arranged on the partition plate;
the control computer is respectively connected with the laser seeker, the laser target indicator, the laser guidance deviation interference machine and the laser alarm probe through data lines; the laser warning probe is connected with the laser deflection interference machine through a data line;
the control computer, the laser target indicator, the laser seeker, the laser deviation guiding interference machine, the laser warning probe, the guidance target and the deviation guiding target jointly realize photoelectric active interference simulation.
Further, the laser deviation guide interference machine is fixed on a tripod;
the laser deviation guide interference machine is positioned obliquely above the scene simulation sand table;
the laser seeker and the laser target indicator are located on the same side of the scene simulation sand table and are arranged above the scene simulation sand table.
Further, the control computer generates a target indication instruction, an active interference deflection guiding instruction and a guidance tracking instruction which are respectively sent to the laser target indicator, the laser deflection guiding interference machine and the laser seeker;
the laser target indicator generates a coded target indication laser signal and points to a guidance target and a laser warning probe according to a target indication instruction;
the laser warning probe acquires coding information from a target indication laser signal and transmits the coding information as a phase advance signal to the laser beam-guide interference machine;
the laser polarization-guiding interference machine generates a polarization-guiding laser signal and points to a polarization-guiding target according to the active interference polarization-guiding instruction and the phase advance signal;
the laser seeker carries out guidance tracking on target indication laser signals and guidance deviation laser signals which are subjected to diffusion reflection on the guidance target and the guidance deviation target according to the guidance tracking instruction and feeds the guidance tracking laser signals and the guidance deviation laser signals back to the control computer;
and the control computer analyzes the feedback information to obtain the active laser beam-guide interference effect.
Furthermore, the laser alarm probe comprises a photoelectric signal conversion module, a signal conditioning module and a laser advanced forwarding and decoding module;
the photoelectric signal conversion module is used for converting the target indication laser signal into an electric signal;
the electric signal conditioning module is used for amplifying the electric signal and sending the electric signal to the laser advanced forwarding decoding module;
and the laser advanced forwarding and decoding module is used for sequentially decoding and carrying out phase advanced processing on the amplified electric signals.
Further, the encoding comprises a precise frequency code and 3-10 bit interval encoding;
the target indication laser signal is a 1064nm target indication laser signal.
Further, a smoke screen interference machine is arranged below the partition plate;
the smoke screen interference machine is connected with the control computer through a data line; the smoke screen interference machine is used for releasing a smoke screen and shielding an airspace between a guidance target and the laser guidance head and between the guidance target and the laser target indicator;
the control computer, the laser target indicator, the laser seeker, the scene simulation sand table, the smoke screen interference machine and the guidance target jointly realize photoelectric passive interference simulation.
Further, the smoke screen disturbing machine comprises a single pipe arranged below the separation plate;
the smoke screen outlet of the single pipe penetrates through the partition plate through a through hole and extends to the outside of the scene simulation sand table; the through hole is formed in the partition plate and is located between the guide target and the laser guidance head and between the guide target and the laser target indicator.
Further, the control computer generates a smoke screen interference release instruction, a target indication instruction and a guidance tracking instruction which are respectively sent to the smoke screen interference machine, the laser target indicator and the laser seeker;
the smoke screen interference machine carries out smoke screen release on the area where the guidance target is located according to the smoke screen interference release instruction;
the laser target indicator generates an indication laser signal of a target after being coded according to the target indication instruction and points to the guidance target;
the laser seeker carries out guidance tracking on a target indication laser signal diffusely reflected by the guidance target according to the guidance tracking instruction and feeds the target indication laser signal back to the control computer;
and the control computer analyzes the feedback information to obtain the photoelectric passive interference effect.
Further, the encoding comprises a precise frequency code and 3-10 bit interval encoding;
the target indication laser signal is a 1064nm target indication laser signal.
The invention has the beneficial effects that:
the invention adopts the laser warning probe, the smoke screen interference machine, the guidance target and the deviation guiding target in the scene simulation sand table, and the laser target indicator, the laser guidance head, the laser deviation guiding interference machine and the control computer which are positioned at one side of the scene simulation sand table, so that the evaluation of photoelectric active interference simulation and photoelectric passive interference effect is realized, and reliable simulation data support is provided for teaching and scientific research work in the photoelectric attack and defense field; the cost is reduced, and the operability is realized.
Drawings
FIG. 1 is a schematic structural diagram of a semi-physical simulation system for simulating photoelectric attack and defense in an indoor environment according to the present invention;
FIG. 2 is a schematic diagram of a smoke jammer connection;
FIG. 3 is a schematic diagram of a 1.06 μm pulsed laser;
FIG. 4 is a schematic view of the laser seeker assembly;
FIG. 5 is a schematic diagram of an active induced bias interference simulation process;
FIG. 6 is a schematic diagram of a passive interference simulation process;
FIG. 7 is a schematic diagram of a laser coded signal receiver;
FIG. 8 is a schematic diagram of a laser signal decoding and phase advancing process.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Referring to fig. 1, the semi-physical simulation system for simulating photoelectric attack and defense in an indoor environment includes a control computer 1, a laser target indicator 2, a laser seeker 3, a laser deflection interference machine 4, a guidance target 5, a deflection guidance target 6, and a scene simulation sand table 7. The scene simulation sand table 7 comprises a separation plate, and a landform model and a laser warning probe 8 which interfere with a field are arranged on the separation plate. The surfaces of the guidance target 5 and the guidance target 6 are coated with a diffuse reflective material to ensure that the target-pointing laser and the guidance laser hit thereon can generate sufficiently strong scattered laser light to be received by the laser guidance head 3. The control computer 1 is respectively connected with the laser seeker 3, the laser target indicator 2, the laser guidance deviation interference machine 4 and the laser warning probe 8 through data lines. The laser alarm probe 8 is connected and communicated with the laser deviation guiding interference machine 4 through a data line (RS422 serial port line). The device comprises a control computer 1, a laser target indicator 2, a laser seeker 3, a laser guidance deviation interference machine 4, a laser warning probe 8, a guidance target 5 and a guidance deviation target 6, and photoelectric active interference simulation is achieved jointly.
The laser beam deflection interference unit 4 of the present embodiment is fixed to a tripod. The laser beam deflection interference machine 4 is located obliquely above (including upper left and upper right) the scene simulation sand table 7. The laser seeker 3 and the laser target indicator 2 are located on the same side of the scene simulation sand table 7 and are arranged above the scene simulation sand table 7.
First, laser target indicator
The laser target indicator 2 of the present embodiment is a 1064nm laser, and the composition principle thereof is shown in fig. 3. The pump source of the 1.06 mu m pulse laser is a quasi-continuous 808nm semiconductor laser, the quasi-continuous 808nm semiconductor laser adopts optical fiber coupling output, the performance is stable and reliable, the service life is long, and the central wavelength line width is +/-0.3 nm. The advantages of using fiber coupled output are: the coupling system is simple in design and high in coupling efficiency. The gain material of the 1.06 μm pulsed laser was Nd: YAG crystal material, adopting end pumping mode, electro-optically modulating Q by LiNbO3 crystal to obtain pulse laser with pulse width of 15ns, and homogenizing light spot output by DOE homogenizing collimation optical system.
The resonant cavity of the 1.06 μm pulse laser is of a plano-plano cavity structure, and the resonant cavity is formed by a method comprising the following steps: one end of YAG crystal is plated with 1064nm total reflection film as total reflection mirror, and a plane mirror plated with 1064nm partial reflection film is selected as output coupling mirror. The cavity type belongs to a critical cavity, and large-volume fundamental mode oscillation is easy to realize. After the laser is stably operated, since Nd: the flat-flat cavity is changed into a more stable flat-concave cavity under the influence of the thermal effect of the YAG crystal, which is beneficial to the stability of output power. The driving circuit of the 1.06 mu m pulse laser comprises a control module, an LD driving module, a multi-path temperature control module and a Q driving module. The control module adopts a full digital control mode, reduces LD power supply current ripples, and slows down the rising and falling speeds of current. The multi-path temperature control module carries out omnibearing monitoring on the LD, and the temperature control precision is +/-0.1 degree; and a self-protection mechanism for LD temperature and abnormal power supply current is adopted, namely, one of the LD temperature and the power supply current is automatically powered off when abnormal. By adopting the measures, the output wavelength of the LD is stable, the LD is effectively protected, and the service life of the LD is prolonged.
The main design indexes of the laser target indicator of the embodiment are as follows: the center wavelength is 1064nm +/-10 nm, the pulse width is 15ns +/-5 ns, the single pulse energy is more than or equal to 60 muj, the repetition frequency is 1-30 Hz, the trigger precision is less than or equal to 2 mus, and the continuous working time is more than or equal to 3 min; the energy stability is less than or equal to 15 percent, the triggering mode is external triggering, the cooling mode is natural cooling, the working temperature is-10 ℃ to +55 ℃, and the power supply voltage is + 24V.
Second, laser guide head
The laser seeker 3 is used for identifying and tracking 1064nm encoded laser signals, and the laser seeker 3 comprises an optical lens, a four-quadrant detector, an analog amplification circuit and a signal processing circuit, as shown in fig. 4. And the optical lens is used for collecting the laser signals (including the target indication laser signals and the guidance bias laser signals) subjected to diffuse reflection and filtering other stray light. The converged laser signals enter a four-quadrant detector, and the four-quadrant detector is used for converting the laser signals into electric signals. And the analog amplifying circuit is used for amplifying the electric signal and outputting the electric signal to the signal processing circuit. And the signal processing circuit is used for decoding the amplified electric signals, calculating deviation information (comprising azimuth deviation and pitching deviation) of the laser seeker and the target (the guidance target 5 and the deviation guiding target 6), and guiding the laser seeker 3 to point to the target position according to the deviation information to complete guidance tracking of the target.
The deviation information of this embodiment is calculated according to the following formula:
wherein E isXAnd EYDeviation information in azimuth and pitch (i.e., azimuth deviation and pitch deviation), respectively; v1、V2、V3And V4The voltage values of four quadrants of the four-quadrant detector are respectively.
The specific structure of the laser seeker 3 is as follows: the lens cabin (optical cabin) and the circuit cabin are arranged from the front end to the rear end of the laser guide head 3 in sequence. The lens cabin (optical cabin) and the circuit cabin of the laser seeker 3 are of an integrated structure, an optical lens in the lens cabin is fixedly connected with the four-quadrant detector, and fasteners (such as screws) are all processed through thread glue to prevent vibration and impact, so that structural strength is improved, and stability of a light path and reliability of receiving are guaranteed.
The analog amplification circuit and the signal processing circuit in the circuit cabin are mounted in a mode of cushion column lamination, so that the mounting space is saved, and the overall size and weight are effectively reduced. The PCB and the wiring points in the circuit cabin are treated by three-proofing paint, the lens in the lens cabin is sealed, and the circuits (including an analog amplification circuit and a signal processing circuit) in the rear-end circuit cabin are treated by a sealing washer, so that the problems of shock resistance, moisture resistance and impact resistance are solved. In the design of the mounting structure, screws at the rear part of the guide head are fixed to the rear end base plate, screw hole positions are arranged in the middle of the guide head, and the support structure is fixed during fixing.
Laser deflection-guiding interference machine
The laser induced polarization interference machine 4 (such as an induced polarization interference laser) of the embodiment is erected on a tripod, is placed on one side of a scene simulation sand table, is generally positioned above the scene simulation sand table 7 in an oblique manner, such as above left or above right, and aims at an induced polarization target on the scene simulation sand table 7, and the laser induced polarization interference machine 4 (such as an induced polarization interference laser) is connected with an output interface of a laser alarm probe on the scene simulation sand table 7 through an RS422 data line.
The laser guidance interference machine 4 (such as a guidance interference laser) of the present embodiment is similar to the principle of the laser target indicator 3, and is mainly used for transmitting a 1064nm laser pulse signal subjected to advanced coding, the 1064nm laser pulse signal subjected to advanced coding is subjected to diffuse reflection after being applied to a guidance target 6 on a scene simulation sand table 7, and the laser after diffuse reflection enters the laser guidance head 3. Main parameters of the lead-offset interference laser: the central wavelength is 1064nm +/-10 nm, the pulse width is 15ns +/-5 ns, the single-pulse energy is more than or equal to 60 muj, the repetition frequency is 1-30 Hz, the alarm wave band is near infrared, the lead time is 10 mus, the lead precision is less than or equal to 1 mus, the continuous working time is more than or equal to 3min, and the energy stability is less than or equal to 15%.
Fourth, scene simulation sand table
The scene simulation sand table 7 comprises a landform model, the landform model has the characteristics of strong stereoscopic impression and visual image, and can be used for simulating the landform of an interference field (battlefield), the landform model comprises building models such as mountains, water systems, forests, roads, farmhouses, buildings, moving vehicles and static vehicles, the radiation coefficients of the materials of the building models are different, and the building models are made of materials with different radiation coefficients so as to more vividly display the real scene in photoelectric attack and defense, and refer to fig. 1.
Laser warning probe
The laser alarm probe 8 of the present embodiment includes an optical lens, a photodetector, a laser coded signal receiver, and a laser advanced forwarding and decoding module, referring to fig. 7. The optical lens comprises an optical filter and a diaphragm, wherein the optical filter adopts a 1064nm infrared narrow-band optical filter, the diameter of the optical filter is 18mm, the thickness of the optical filter is 2mm, the transmittance of the optical filter is not less than 95%, and the cut-off depth is OD 4. The diaphragm is subjected to blackening treatment after digital precision machining, and only laser signals within an incident angle range are received. The response wavelength of the photoelectric detector is 0.9-1.7 mu m, the effective detection area is 1mm by adopting a To-46 packaging mode, and the response sensitivity is 0.9A/W.
The laser coding signal receiver of the embodiment comprises a photoelectric signal conversion module and a signal conditioning module. And the photoelectric signal conversion module is used for converting the target indication laser signal into an electric signal. The electric signal conditioning module is used for amplifying the electric signal and sending the electric signal to the laser advanced forwarding decoding module, the signal conditioning circuit is a high-frequency low-noise operational amplification circuit so as to reduce the interference of direct current signals such as noise, sunlight and the like, the preceding stage is used for stopping direct current, and a primary power supply filter circuit is arranged at every other stage. The laser advanced forwarding decoding module is used for sequentially decoding and phase advanced processing the amplified electric signals, the STM32+ FPGA combined design is adopted, the STM32 is used for decoding and processing pulse laser signals, the FPGA is used for performing phase advanced forwarding processing on the signals, and the combination of the STM32 and the FPGA can realize high real-time processing speed. The working process of the laser advanced forwarding decoding module is shown in fig. 8, and specifically includes the following steps:
Referring to fig. 5, the working process of the optoelectronic active interference simulation of the present embodiment is as follows:
the control computer 1 generates a target indication instruction, an active interference deflection guiding instruction and a guidance tracking instruction which are respectively sent to the laser target indicator 2, the laser deflection guiding interference machine 4 and the laser seeker 3;
the laser target indicator 2 generates a coded target indication laser signal according to the target indication instruction and points to the guidance target 5 and the laser warning probe 8;
the laser warning probe 8 acquires coding information from the target indication laser signal and generates a phase advance signal to the laser polarization-induced interference machine 4;
the laser polarization-guiding interference machine 4 generates a polarization-guiding laser signal and points to a polarization-guiding target 6 according to the active interference polarization-guiding instruction and the phase advance signal;
the laser seeker 4 conducts guidance tracking on target indication laser signals and guidance deviation laser signals which are subjected to diffusion reflection on the guidance target and the guidance deviation target according to the guidance tracking instruction and feeds back the target indication laser signals and the guidance deviation laser signals to the control computer 1;
and the control computer 1 analyzes the feedback information to obtain the active laser beam-guide interference effect.
In order to realize photoelectric passive interference simulation, a smoke screen interference machine 9 is arranged below the partition plate of the embodiment. The smoke screen interference machine 9 is connected with the control computer 1 through a data line (RS422 serial port line). And the smoke screen interference machine 9 is used for releasing the smoke screen and shielding the airspace between the guidance target 5 and the laser guidance head 3 and between the guidance target and the laser target indicator 2. The control computer 1, the laser target indicator 2, the laser seeker 3, the scene simulation sand table 7, the smoke screen interference machine 9 and the guidance target 5 jointly realize photoelectric passive interference simulation.
The smoke jammer 9 of the present embodiment includes a single tube disposed below the partition plate. The smoke screen outlet of the single pipe penetrates through the partition plate through the through hole and extends to the outside of the scene simulation sand table 7. The through hole is arranged on the partition plate and is positioned between the guide target 6 and the laser guide head 3 and the laser target indicator 2. The smoke screen interference machine 9 is used for simulating the battlefield smoke screen shielding effect, and realizes the smoke screen shielding of the local area by a heating smoke generation mode. The smoke screen interference simulation equipment is integrally installed below a scene sand table, the nozzle is fixed to the right side of a sand table target in an extension nozzle mode, and the smoke screen interference machine is controlled through a control computer. The detailed parameters of the smoke screen interference simulation equipment are as follows: the power supply voltage is 220V, the power is 1000W, the kettle capacity is 700mL, the oil pump is SP-12A, the smoke spraying amount is 5600cuft/min, the preheating time is 10min, the continuous smoke spraying time is 30s, the temperature is 250-270 degrees, and the smoke spraying distance is 2-4 m.
Referring to fig. 6, the photoelectric passive interference simulation process of the present embodiment:
the control computer 1 generates a smoke screen interference release instruction, a target indication instruction and a guidance tracking instruction which are respectively sent to the smoke screen interference machine 9, the laser target indicator 2 and the laser seeker 3;
the smoke screen interference machine 9 releases the smoke screen to the area where the guidance target 5 is located according to the smoke screen interference release instruction;
the laser target indicator 2 generates an indication laser signal of a target after being coded according to the target indication instruction and points to the guidance target 5;
the laser seeker 3 conducts guidance tracking on a target indication laser signal of guidance target diffuse reflection according to the guidance tracking instruction and feeds the target indication laser signal back to the control computer 1;
and the control computer 1 analyzes the feedback information to obtain the photoelectric passive interference effect.
The encoding of the embodiment comprises precise frequency codes and 3-10 bit interval encoding. The target indicating laser signal is a 1064nm target indicating laser signal.
The semi-physical simulation system for simulating photoelectric attack and defense in the indoor environment adopts the laser warning probe, the smoke screen interference machine, the guidance target, the deviation guiding target, the laser target indicator, the laser guidance head, the laser deviation guiding interference machine and the control computer which are arranged on one side of the scene simulation sand table, realizes the evaluation of photoelectric active interference simulation and photoelectric passive interference effect, and provides reliable simulation data support for teaching and scientific research work in the field of photoelectric attack and defense; the cost is reduced, and the operability is realized.
Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the embodiments of the present invention.
Claims (9)
1. A semi-physical simulation system for simulating photoelectric attack and defense in an indoor environment is characterized by comprising a control computer, a laser target indicator, a laser seeker, a laser deviation guiding interference machine, a guidance target, a deviation guiding target and a scene simulation sand table;
the scene simulation sand table comprises a separation plate; a topographic and geomorphic model and a laser warning probe which interfere with a field are arranged on the partition plate;
the control computer is respectively connected with the laser seeker, the laser target indicator, the laser guidance deviation interference machine and the laser alarm probe through data lines; the laser warning probe is connected with the laser deflection interference machine through a data line;
the control computer, the laser target indicator, the laser seeker, the laser deviation guiding interference machine, the laser warning probe, the guidance target and the deviation guiding target jointly realize photoelectric active interference simulation.
2. The semi-physical simulation system of claim 1 wherein the laser induced polarization interference machine is fixed to a tripod;
the laser deviation guide interference machine is positioned obliquely above the scene simulation sand table;
the laser seeker and the laser target indicator are located on the same side of the scene simulation sand table and are arranged above the scene simulation sand table.
3. The semi-physical simulation system according to claim 1 or 2, wherein the control computer generates a target indication command, an active disturbance pilot command and a guidance tracking command to the laser target indicator, the laser pilot jammer and the laser seeker, respectively;
the laser target indicator generates a coded target indication laser signal and points to a guidance target and a laser warning probe according to a target indication instruction;
the laser warning probe acquires coding information from a target indication laser signal and generates a phase advance signal to the laser beam-guide interference machine;
the laser polarization-guiding interference machine generates a polarization-guiding laser signal and points to a polarization-guiding target according to the active interference polarization-guiding instruction and the phase advance signal;
the laser seeker carries out guidance tracking on target indication laser signals and guidance deviation laser signals which are subjected to diffusion reflection on the guidance target and the guidance deviation target according to the guidance tracking instruction and feeds the guidance tracking laser signals and the guidance deviation laser signals back to the control computer;
and the control computer analyzes the feedback information to obtain the active laser beam-guide interference effect.
4. The semi-physical simulation system of claim 3, wherein the laser alarm probe comprises a photoelectric signal conversion module, a signal conditioning module and a laser advanced forwarding decoding module;
the photoelectric signal conversion module is used for converting the target indication laser signal into an electric signal;
the electric signal conditioning module is used for amplifying the electric signal and sending the electric signal to the laser advanced forwarding decoding module;
and the laser advanced forwarding and decoding module is used for sequentially decoding and carrying out phase advanced processing on the amplified electric signals.
5. The semi-physical simulation system of claim 3 wherein the codes comprise precise frequency codes and 3-10 bit spacing codes;
the target indication laser signal is a 1064nm target indication laser signal.
6. The semi-physical simulation system according to claim 1 or 2, wherein a smoke screen disturbing machine is arranged below the partition plate;
the smoke screen interference machine is connected with the control computer through a data line; the smoke screen interference machine is used for releasing a smoke screen and shielding an airspace between a guidance target and the laser guidance head and between the guidance target and the laser target indicator;
the control computer, the laser target indicator, the laser seeker, the scene simulation sand table, the smoke screen interference machine and the guidance target jointly realize photoelectric passive interference simulation.
7. The semi-physical simulation system of claim 6, wherein the smoke screen disruptor comprises a single tube disposed below the divider plate;
the smoke screen outlet of the single pipe penetrates through the partition plate through a through hole and extends to the outside of the scene simulation sand table; the through hole is formed in the partition plate and is located between the guide target and the laser guidance head and between the guide target and the laser target indicator.
8. The semi-physical simulation system according to claim 7, wherein the control computer generates a smoke disturbance release command, a target indication command and a guidance tracking command to the smoke disturber, the laser target indicator and the laser seeker, respectively;
the smoke screen interference machine carries out smoke screen release on the area where the guidance target is located according to the smoke screen interference release instruction;
the laser target indicator generates an indication laser signal of a target after being coded according to the target indication instruction and points to the guidance target;
the laser seeker carries out guidance tracking on a target indication laser signal diffusely reflected by the guidance target according to the guidance tracking instruction and feeds the target indication laser signal back to the control computer;
and the control computer analyzes the feedback information to obtain the photoelectric passive interference effect.
9. The semi-physical simulation system of claim 8 wherein the codes comprise precision frequency codes and 3-10 bit spacing codes;
the target indication laser signal is a 1064nm target indication laser signal.
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| CN114373357B (en) | 2023-01-24 |
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