CN112946586B - C-band guidance radar simulation system - Google Patents
C-band guidance radar simulation system Download PDFInfo
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- CN112946586B CN112946586B CN202011425949.8A CN202011425949A CN112946586B CN 112946586 B CN112946586 B CN 112946586B CN 202011425949 A CN202011425949 A CN 202011425949A CN 112946586 B CN112946586 B CN 112946586B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/38—Jamming means, e.g. producing false echoes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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Abstract
The invention discloses a C-band guidance radar simulation system, which comprises: host computer, control machine case and antenna machine case. The control case is electrically connected with the upper computer and is used for receiving a control command sent by the upper computer and generating a microwave excitation signal according to the control command. And the antenna case is electrically connected with the control case and is used for receiving the microwave excitation signal sent by the control case, synthesizing the excitation signal into a 4kW high-power microwave signal through multi-stage amplification and ten paths of space and radiating the signal to the space. Therefore, the C-band guided radar simulation system improves the fidelity of the guided radar false target, and is low in cost and high in reliability.
Description
Technical Field
The invention relates to the technical field of microwaves, in particular to a C-band guided radar simulation system.
Background
Ancient military laws have wonderful discussion of 'deficiency and excess' and 'miraculous and positive', and modern science vow war south and south alliance weapons are flexibly applied to invisibly and falsely. It can be said that the implicit and true deception is an important content for the survival and confrontation in the war. Under the modern war condition, enemy reconnaissance detection equipment is more sensitive, the identification capability is stronger, the detector information interconnection sharing is higher, the method of only depending on the faithfulness to store the target is undoubtedly passive, the cost is higher, and at the moment, a proper fake target needs to be deployed to confuse the reconnaissance identification of the enemy, interfere the enemy striking decision, weaken the enemy striking effect and improve the survival capability of the important military target of our party. The stronger the false target false indication capability, the higher the true target viability. The simulation performance of the false target is the similarity between the false target and the true target, namely, the false target is consistent with the true target on various exposure technical characteristics (including size, appearance, radiation effect, reflection effect and the like), the better the simulation performance of the false target is, the better the shielding effect on the true target is, namely, the stronger the false display capability is.
In modern high-tech wars, the air defense missile system is an important weapon equipment for air defense in the state of the earth. The guided radar is an important device of an air defense weapon system. Is an important target for attack by both wars and guards.
In order to improve the survivability of the guided radar on a battlefield, inflatable false target false indication is generally adopted to protect a true target. However, the false target can only perform optical false-checking, has no electromagnetic radiation capability, is easy to discriminate by enemy reconnaissance detection equipment, has poor simulation performance, and gradually reduces the effect of improving the survival capability of the guidance radar under the modern high-tech warfare condition along with the improvement of the electromagnetic reconnaissance capability of an attack party.
The inflatable false target is combined with a guidance radar simulation system, so that the simulation performance of the false target is improved, and the survival capability of the true target can be further improved.
In a general radar simulation system, a high-power transmitter is adopted to output microwave signals, and the microwave signals are radiated to a space through a common fixed low-gain beam antenna.
For example, if the signal strength is required to satisfy ± 10 degrees in the azimuth direction and ± 20 degrees in the pitch direction at a 100 km skew distance, the receiver with a sensitivity of-65 dBm can receive the signal, the antenna gain is about 15dB, and the transmitter power needs about 16kW.
By adopting the scheme, the transmitter has the advantages of high output power, high cost, large volume and fixed antenna beam direction. However, the current guidance radars in America internationally, such as guidance radars of a patricia weapon system, guidance radars of an S400 weapon system and advanced guidance radars in the active service of our army, adopt the phased array radar technology. Because the device can not simulate the function of fast scanning of real guided radar beams, the fidelity is poor.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a C-band guidance radar simulation system which improves the fidelity of a guidance radar false target and is low in cost and high in reliability.
In order to achieve the above object, the present invention provides a C-band guidance radar simulation system, comprising: host computer, control machine case and antenna machine case. The control case is electrically connected with the upper computer and used for receiving a control instruction sent by the upper computer and generating a microwave excitation signal according to the control instruction. And the antenna case is electrically connected with the control case and is used for receiving the microwave excitation signal sent by the control case, synthesizing the excitation signal into a 4kW high-power microwave signal through multi-stage amplification and ten paths of space and radiating the signal to the space.
In one embodiment of the invention, the interface between the control chassis and the antenna chassis is connected by a power supply cable, a communication cable and a low-loss coaxial cable.
In an embodiment of the present invention, the control cabinet includes a frequency synthesis component, a phase shift control component, a control circuit board, and a power module. The frequency synthesis component is used for generating a corresponding C-band low-power microwave excitation signal according to the received control instruction. The phase-shifting control component is used for receiving and processing the C-band low-power microwave excitation signal output by the frequency synthesis component, generating 10 paths of phase-adjustable microwave excitation signals and outputting the signals to the antenna case.
In an embodiment of the present invention, the antenna chassis includes a plurality of amplifiers, a plurality of isolators, a controller, and a plurality of horn antennas. The amplifiers are used for receiving 10 paths of phase-adjustable microwave excitation signals generated by the phase-shifting control assembly and performing power synthesis, so that microwave signals not less than 4kW are obtained.
In one embodiment of the present invention, the plurality of amplifiers each employ a GaN-based microwave device and a high power combining technique.
In an embodiment of the present invention, the number of the plurality of amplifiers is ten, the number of the plurality of isolators is ten, and the number of the plurality of horn antennas is ten.
In an embodiment of the present invention, the gain of each feedhorn is not less than 11dB, and the antenna gain after spatial power combining of ten feedhorns is greater than 21dB.
In one embodiment of the present invention, each feedhorn has a gain of 12.6dB at the center frequency and a azimuth beam width of 24 degrees, and ten feedhorns constitute a one-dimensional phased array antenna.
In an embodiment of the present invention, the ten horn antennas are respectively configured to receive the microwave signals output by the ten amplifiers and radiate the microwave signals to the space.
Compared with the prior art, the C-band guidance radar simulation system has the following beneficial effects:
1. the antenna adopts a one-dimensional phased array antenna, transmits microwave signals in a specified space domain through beam rapid scanning, and has high fidelity;
2. the antenna gain is high, the microwave transmitting power is low and the system cost is low under the condition of achieving the same false distance, and the cost requirement of sacrificial equipment is met;
3. a high-stability microwave signal generation subsystem and a powerful synchronous pulse signal generation subsystem are adopted, the transmitting frequency and the waveform are variable, and the fidelity is good;
4. the transmitting module (amplifier) adopts a solid-state transmitter scheme, has high reliability and meets the requirement of unattended equipment;
5. the radiation unit adopts a horn antenna, and meets the requirement of high power.
Drawings
FIG. 1 is a schematic diagram of a wire frame structure of a C-band guided radar simulation system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a wire-frame structure of a control box of a C-band guided radar simulation system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a wire frame configuration of a phase shifting component of a C-band guided radar simulation system in accordance with one embodiment of the present invention;
FIG. 4 is a schematic diagram of a wire frame structure of an antenna chassis of a C-band guided radar simulation system in accordance with one embodiment of the present invention;
FIG. 5 is a schematic perspective view of a C-band guided radar simulation system according to an embodiment of the present invention.
Description of the main reference numerals:
the device comprises a host computer 1, a control cabinet 2, an antenna cabinet 3, a frequency synthesis component 4, a phase-shifting control component 5, a control circuit board 6, a power supply module 7, an amplifier 8, an isolator 9, a controller 10, a horn antenna 11, a wave control board 12, a phase shifter 13, a power divider 14, a power divider ten by one and a modulator 15.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
FIG. 1 is a schematic diagram of a wire-frame structure of a C-band guided radar simulation system according to an embodiment of the present invention. Fig. 2 is a schematic diagram of a wire-frame structure of a control cabinet 2 of a C-band guided radar simulation system according to an embodiment of the present invention. FIG. 3 is a schematic diagram of a wire-frame structure of a phase shifting component of a C-band guided radar simulation system according to an embodiment of the invention. Fig. 4 is a schematic diagram of a wire-frame structure of an antenna housing 3 of a C-band guided radar simulation system according to an embodiment of the present invention. FIG. 5 is a schematic perspective view of a C-band guided radar simulation system according to an embodiment of the present invention.
As shown in fig. 1 to 5, a C-band guidance radar simulation system according to a preferred embodiment of the present invention includes: host computer 1, control machine case 2 and antenna machine case 3. The control cabinet 2 is electrically connected with the upper computer 1, and the control cabinet 2 is used for receiving a control instruction sent by the upper computer 1 and generating a microwave excitation signal according to the control instruction. The antenna case 3 is electrically connected with the control case 2, and the antenna case 3 is used for receiving the microwave excitation signal sent by the control case 2, synthesizing the excitation signal into a 4kW high-power microwave signal through multi-stage amplification and ten paths of space, and radiating the signal to the space.
In one embodiment of the present invention, the interface between the control box 2 and the antenna box 3 is connected by a power supply cable, a communication cable, and a low-loss coaxial cable.
In one embodiment of the present invention, the control box 2 includes a frequency synthesis component 4, a phase shift control component 5, a control circuit board 6 and a power module 7. The frequency synthesis component 4 is configured to generate a corresponding C-band low-power microwave excitation signal according to the received control instruction. The phase-shift control component 5 is configured to receive and process the C-band low-power microwave excitation signal output by the frequency synthesis component 4, generate 10 paths of phase-adjustable microwave excitation signals, and output the signals to the antenna chassis 3. The phase shift control block 5 includes a ten-minute power divider 14, ten phase shifters, ten isolators, ten amplifiers, a wave control plate 12, and a modulator 15.
In one embodiment of the present invention, the antenna enclosure 3 includes a plurality of amplifiers 8, a plurality of isolators 9, a controller 10, and a plurality of horn antennas 11. The plurality of amplifiers 8 are used for receiving 10 paths of phase-adjustable microwave excitation signals generated by the phase-shift control component 5 and performing power synthesis, so as to obtain a microwave signal not less than 4 Kw.
In one embodiment of the present invention, the plurality of amplifiers 8 each employ a GaN-based microwave device and a high power combining technique. The number of the plurality of amplifiers 8 is ten, the number of the plurality of isolators 9 is ten, and the number of the plurality of feedhorns 11 is ten.
In an embodiment of the present invention, the gain of each feedhorn 11 is not less than 11dB, and the antenna gain after the ten feedhorns 11 are spatially power-combined is greater than 21dB. The gain of each horn antenna 11 at the center frequency is 12.6dB, the azimuth beam width is 24 degrees, and ten horn antennas 11 form a one-dimensional phased array antenna. The ten horn antennas 11 are respectively used for receiving the microwave signals output by the ten amplifiers 8 and radiating the microwave signals to the space.
In practical application, the C-band guided radar simulation system adopts a phased array scheme (namely, a one-dimensional phased array antenna is formed by ten horn antennas 11). The phased array antenna refers to an antenna that changes the pattern shape by controlling the feeding phase of a radiation element (horn antenna 11) in an array antenna. The control phase can change the direction of the maximum value of the antenna pattern so as to achieve the purpose of beam scanning. The cost of the common phased array is high, and the common phased array is difficult to bear for sacrificial equipment such as a false target. The system adopts a wide wave beam in the azimuth direction, one-dimensional phase scanning in the pitching direction, and meets the requirement of covering the airspace by the wave beam in the pitching direction through the phase scanning. The antenna gain is improved to 21dB, and the transmitting power of 4kw can meet the power requirement. With the development of microwave technology, the cost of low-power microwave integrated circuits and chips is greatly reduced, but the cost of high-power microwave circuits, high-power supplies and cooling equipment is not greatly reduced. The simulation system greatly reduces the transmitting power, greatly reduces the cost of the simulation system, and meets the requirements of sacrificial equipment on low cost and high reliability. Through the quick scanning of wave beam, can simulate real radar beam scanning's function, the fidelity is good.
The device of the guidance radar simulation system can be divided into two parts from the hardware composition structure: a control box 2 and an antenna box 3. The control case 2 is responsible for receiving various instructions of manual operation (namely control instructions of the upper computer 1), loading of working parameters of the ground-air missile special radar launching simulation system is completed, and output of low-power signals is completed. The antenna case 3 receives the excitation signal of the control case 2, and the excitation signal is amplified in multiple stages to finally synthesize a 4kW high-power microwave signal which is radiated to the space through the antenna. The interface between the two is realized by a power supply cable, a communication cable and a low-loss coaxial cable.
The control cabinet 2 mainly comprises a frequency synthesis component 4, a phase-shifting control component 5, a control circuit board 6 and a power module 7. The frequency synthesis component 4 generates corresponding C-band low-power microwave excitation signals according to the received command words, outputs 13dBm microwave signals and inputs the microwave signals into a ten-power splitter 14 to respectively drive ten 2W MMIC power amplifiers 8. The phase-shift control component 5 processes the input signal of the frequency synthesizer to generate 10 paths of excitation microwave signals with adjustable phases, and the excitation microwave signals are sent to the antenna cabinet 3. The antenna cabinet 3 includes ten 500W final-stage transmission modules (amplifiers 8), ten isolators 9, and ten horn antennas 11. And the ten 500W amplifier 8 modules obtain microwave signals of not less than 4Kw through power synthesis. The 500W amplifier 8 module employs GaN-based microwave devices and high power combining techniques. The total output of the amplifier 8 adopts an improved waveguide form, which realizes the transition from microstrip to waveguide and ensures higher power capacity.
The antenna unit adopts a horn antenna 11, and has the advantages of simple structure, easy processing, large power capacity and convenient adjustment and use. The reasonable selection of the size of the horn can obtain good radiation characteristics, quite good main lobe, small side lobe and high gain. In order to meet the requirement of 21dB of antenna transmission line gain, the gain of a single radiation unit (the horn antenna 11) is not less than 11dB, ten horn antennas 11 are subjected to space power synthesis, and the final antenna gain reaches the requirement of 21dB. The antenna has novel design concept, adopts the fan-shaped horn as the radiation unit, and places the horn in a crossed and staggered way for reducing the distance between the radiation units (horns), and the measured data shows that the performance of the antenna reaches the preset design index. The horn antenna 11 has a gain of 12.6dB in the radiating element at the center frequency, a beam width in the azimuth direction of 24 degrees, and a scanning range of +/-20 degrees in the elevation direction is achieved through phase scanning.
In a word, the C-band guided radar simulation system has the following beneficial effects:
1. the antenna adopts a one-dimensional phased array antenna, transmits microwave signals in a specified airspace through beam fast scanning, and has high fidelity;
2. the antenna gain is high, the microwave transmitting power is small under the condition of achieving the same false distance, the system cost is low, and the cost requirement of sacrificial equipment is met;
3. a high-stability microwave signal generation subsystem and a powerful synchronous pulse signal generation subsystem are adopted, the transmitting frequency and the waveform are variable, and the fidelity is good;
4. the transmitting module (amplifier) adopts a solid-state transmitter scheme, has high reliability and meets the requirement of unattended equipment;
5. the radiation unit adopts a horn antenna, and the requirement of high power is met.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (4)
1. A C-band guided radar simulation system, comprising:
an upper computer;
the control case is electrically connected with the upper computer and is used for receiving a control command sent by the upper computer and generating a microwave excitation signal according to the control command; and
the antenna case is electrically connected with the control case and is used for receiving the microwave excitation signal sent by the control case, synthesizing the excitation signal into a 4kW high-power microwave signal through multi-stage amplification and ten paths of space and radiating the microwave signal to the space;
the control cabinet comprises a frequency synthesis assembly, a phase-shifting control assembly, a control circuit board and a power module;
the frequency synthesis component is used for generating corresponding C-band low-power microwave excitation signals according to the received control instruction;
the phase-shifting control component is used for receiving and processing the C-band low-power microwave excitation signal output by the frequency synthesis component, generating 10 paths of phase-adjustable microwave excitation signals and outputting the signals to the antenna case;
the antenna case comprises a plurality of amplifiers, a plurality of isolators, a controller and a plurality of horn antennas;
the amplifiers are used for receiving the 10 paths of phase-adjustable microwave excitation signals generated by the phase-shift control assembly and performing power synthesis, so that microwave signals not less than 4kW are obtained;
wherein the number of the plurality of amplifiers is ten, the number of the plurality of isolators is ten, and the number of the plurality of feedhorns is ten;
the gain of each horn antenna is not less than 11dB, and the antenna gain of ten horn antennas after spatial power synthesis is greater than 21dB;
the gain of each horn antenna on the central frequency is 12.6dB, the azimuth beam width is 24 degrees, and ten horn antennas form a one-dimensional phased array antenna.
2. The C-band guided radar simulation system of claim 1 wherein the interface between the controller box and the antenna box is connected by power cables, communication cables, and low loss coaxial cables.
3. The C-band guided radar simulation system of claim 1 wherein the plurality of amplifiers each employ GaN-based microwave devices and high power combining techniques.
4. The C-band guided radar simulation system according to claim 1, wherein ten of the horn antennas are respectively configured to receive the microwave signals output from ten of the amplifiers and radiate the signals into space.
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