CN115656941A - Radar anti-interference performance test method, storage medium and computer system - Google Patents
Radar anti-interference performance test method, storage medium and computer system Download PDFInfo
- Publication number
- CN115656941A CN115656941A CN202211087121.5A CN202211087121A CN115656941A CN 115656941 A CN115656941 A CN 115656941A CN 202211087121 A CN202211087121 A CN 202211087121A CN 115656941 A CN115656941 A CN 115656941A
- Authority
- CN
- China
- Prior art keywords
- radar
- interference
- signal
- frequency
- baseband signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a method, a storage medium and a computer system for testing the anti-interference performance of a radar, wherein the method comprises the following steps: s1, receiving a radar radio frequency signal, processing the radar radio frequency signal, and generating a radar intermediate frequency baseband signal; s2, receiving and measuring the ground control system setting parameters of the tested radar, and generating a radar target baseband signal, a suppressed interference intermediate frequency baseband signal, a deception interference baseband signal or a smart frequency-aiming noise interference baseband signal after processing the radar intermediate frequency baseband signal by combining the reference frequency signal; s3, performing up-conversion and amplitude-frequency modulation on the signal generated in the step S2; and S4, radiating the signals processed in the step S3 to training radar equipment. The invention provides a reliable and effective method for radar anti-interference performance test.
Description
Technical Field
The invention belongs to the field of radar test, and particularly relates to a method for testing the anti-interference performance of a radar, a storage medium and a computer system.
Background
The radar is used as a 'thousand-miles eye' on a battlefield, the anti-interference capability of the radar is always an important index for determining the reconnaissance early warning capability, however, the battlefield electromagnetic environment under the informatization condition is increasingly complex, and the scientificity and effectiveness of the radar anti-interference performance test are difficult to embody, so that a method for the radar anti-interference performance test is needed to construct a convenient and scientific radar anti-electromagnetic environment platform.
Disclosure of Invention
In order to solve the existing problems, the invention provides a method for testing the anti-interference performance of a radar, a storage medium and a computer system, and the specific scheme is as follows:
a method for testing the anti-interference performance of a radar comprises the following steps:
s1, receiving a radar radio frequency signal transmitted by a tested radar, processing the radar radio frequency signal, and generating a radar intermediate frequency baseband signal;
s2, receiving and measuring the ground control system setting parameters of the tested radar, and generating a radar target baseband signal, a suppression interference intermediate frequency baseband signal, a deception interference baseband signal or a smart aiming noise interference baseband signal after processing the radar intermediate frequency baseband signal by combining the reference frequency signal;
s3, performing up-conversion and amplitude-frequency modulation on the signal generated in the step S2;
and S4, radiating the signal processed in the step S3 to training radar equipment.
Preferably, the step of generating the radar intermediate frequency baseband signal in step S1 includes:
s1.1, receiving a radar radio frequency signal;
s1.2, amplitude limiting, amplifying and filtering processing are carried out on the radar radio frequency signal;
and S1.3, combining the reference frequency signal to carry out down-conversion on the radar radio frequency signal processed in the step S1.2 to a radar intermediate frequency baseband signal.
Preferably, the step of generating the radar target baseband signal in step S2 includes:
SA2.1, measuring the set parameters of the ground control system of the tested radar to generate a detection threshold signal;
SA2.2, sorting and identifying the radar intermediate-frequency baseband signals, generating guide information, guiding the tracking of the radar intermediate-frequency baseband signals, and outputting corresponding tracking wave gate information;
and SA2.3, under the control of the tracking wave gate information and the detection threshold signal, performing high-speed sampling, storage, delay replication and RCS (radar cross section) modulation on the radar intermediate-frequency baseband signal to generate a radar target baseband signal.
Preferably, the step of generating the interference suppressed intermediate frequency baseband signal in step S2 includes:
SB2.1, constructing a DDS with frequency modulation and phase modulation functions by an FPGA (field programmable gate array) and a DAC (high-speed cable);
SB2.2, setting radar parameters, suppression interference patterns and suppression interference parameters in the parameters according to the ground control system of the tested radar, controlling the DDS by using the noise modulation digital signal, completing the processing of the noise patterns, the noise bandwidth and the power modulation of the radar intermediate frequency baseband signal according to the suppression interference pattern rule, and generating various suppression interference intermediate frequency baseband signals of the tested radar.
Preferably, the step of generating the spoofed interfering baseband signal in step S2 includes:
SC2.1, measuring the ground control system setting parameters of the tested radar to generate a detection threshold signal;
SC2.2, sorting and identifying the radar intermediate frequency baseband signals, generating guide information, guiding the tracking of the radar intermediate frequency baseband signals, and outputting corresponding tracking wave gate information;
and SC2.3, under the control of the tracking gate information and the detection threshold signal, processing the radar intermediate frequency baseband signal according to a deception jamming pattern and a deception jamming parameter, wherein the deception jamming processing comprises time delay modulation, doppler modulation and power modulation, and generating a radar deception jamming baseband signal.
Preferably, the step of generating the smart frequency-aiming noise-interference baseband signal in step S2 includes:
SD2.1, measuring the set parameters of the ground control system of the tested radar to generate a detection threshold signal;
SD2.2, constructing a DDS with frequency modulation and phase modulation functions through an FPGA (field programmable gate array) and a DAC (high-speed cable);
SD2.3, radar parameters and smart frequency-aiming noise interference parameters in the set parameters of the ground control system of the detected radar according to the detection threshold signal and the tested radar, processing of smart interference including time delay modulation, doppler modulation and power modulation is completed according to a smart interference pattern rule, processing of noise patterns, noise bandwidth and power modulation is completed by controlling a DDS through a noise modulation digital signal according to an interference pattern rule, and a smart frequency-aiming noise interference baseband signal of the tested radar is generated.
The invention also discloses a computer readable storage medium, a computer program is stored on the medium, and after the computer program runs, the method for performing the radar anti-interference performance test is executed.
The invention also discloses a computer system, which comprises a processor and a storage medium, wherein the storage medium is stored with a computer program, and the processor reads the computer program from the storage medium and runs the computer program to execute the method for testing the radar anti-interference performance.
The invention has the beneficial effects that:
the radar target echo simulation system has the functions of receiving and down-converting the radar equipment radio frequency signals, measuring pulse parameters of the radar equipment radio frequency signals, sorting and identifying the radar equipment radio frequency signals, simulating radar target echoes, simulating radar suppression interference signals, simulating radar deception interference signals, simulating smart frequency aiming noise interference and the like. A reliable and effective method is provided for radar anti-interference performance tests.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of the load mount of the present invention;
fig. 2 is a schematic perspective view of the load mounting member of the present invention connected to a load housing;
FIG. 3 is a side view of the load body with the transceiving antenna of the present invention rotated to different positions;
fig. 4 is a perspective view of the load body according to the present invention;
FIG. 5 is an exploded view of the load case of the present invention (top panel not shown);
FIG. 6 is an exploded view of the coupling and shaft of the present invention;
FIG. 7 is an electrical schematic block diagram of the present invention;
FIG. 8 is a flow chart of a method of the present invention.
The reference numbers are as follows: 1. load machine case, 101, shell body, 1011, heat dissipation panel, 102, microwave combination module, 103, printed circuit board, 104, lithium cell, 105, power amplifier unit, 2, quick detach track, 3, fixed carbon plate, 4, aluminium column, 5, connecting piece, 501, machine case connecting plate, 502, antenna connecting plate, 6, pivot, 7, receiving and dispatching antenna, 701, strengthening rib.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the multifunctional electronic load for the radar anti-interference performance test can be hung on an unmanned aerial vehicle platform, a typical radar countersystem is simulated by lifting off, signals transmitted by radar equipment are received by reconnaissance, after signal processing, interference signals are generated according to set parameters and transmitted back to the radar equipment, the radar countersystem is simulated to work, and an environment is provided for the radar anti-interference performance test.
As shown in fig. 1, 2, 3 and 4, the multifunctional electronic load structure includes a load mounting member and a load body, the load body includes a load case 1 and a transceiver antenna 7, the load case 1 is fixed on the belly of the unmanned aerial vehicle through the load mounting member, and the transceiver antenna 7 is installed on the bottom surface of the load case 1.
Wherein, as shown in fig. 1 and 2, the load mount comprises a quick release rail 2 and a fixed carbon plate 3. Quick detach track 2 is from locking-type slide rail, and the orbital fixed rail of quick detach formula is fixed at the unmanned aerial vehicle belly, and the movable rail is fixed at the top surface of fixed carbon plate 3. The quick-release rail 2 is convenient to fix and replace the multifunctional electronic load. The fixed carbon plate 3 is fixedly connected with the load case 1 through a plurality of aluminum columns 4.
As shown in fig. 3, 4 and 6, the transceiving antenna 7 is mounted on the bottom surface of the loading case 1 through the detachable connector 5, and the connector 5 comprises a case connecting plate 501 and an antenna connecting plate 502. The chassis connecting plate 501 is fixed to the bottom surface of the loaded chassis 1. And the antenna connection board 502 is inclined toward the side of the load case 1, fixed on the case connection board 501, and forms a 7-shape with the case connection board 501. The connection position of the case connection plate 501 and the antenna connection plate 502 is located on one side of the loading case 1, the antenna connection plate 502 is vertically connected with the transceiver antenna 7 through the rotating shaft 6, and the transceiver antenna 7 is arranged on the outer side of the loading case 1. By the arrangement, the receiving and transmitting antenna 7 can be always kept to be in a pitching downward state, and the load case 1 cannot shield the receiving and transmitting antenna 7. In addition, the connecting piece 5 can be detachably arranged, so that a tester can conveniently select different receiving and transmitting antennas 7 to receive signals of different frequency bands according to test requirements.
As shown in fig. 6, the rotating shaft 6 is a positionable rotating shaft 6, the transmitting/receiving antenna 7 is a flat hollow printed board 103 antenna, and a plurality of reinforcing ribs 701 are provided on the printed board 103 antenna. With this arrangement, on the one hand, the transmitting and receiving antenna 7 can be rotated to a proper angle and then positioned as required. On the other hand, due to the design of the hollowed-out printed board 103 antenna and the reinforcing ribs 701, wind resistance can be reduced as much as possible, and the antenna can be reinforced. And simultaneously, the weight of the multifunctional electronic load can be reduced as much as possible.
As shown in fig. 5, the loading cabinet 1 includes an outer casing 101, and a control unit, a scout receiver unit, a sorting identification and target interference generation unit, a frequency synthesizer unit, an up-conversion and rf channel unit, and a power amplifier unit 105 disposed inside the outer casing 101. The scout receiver unit, frequency synthesizer unit, up-conversion and radio frequency channel unit are integrated into 1 microwave combining module 102. The control unit and the sorting recognition and target disturbance generation unit are integrated into one printed board 103. The power module is a lithium battery 104. Wherein, printed board 103 is fixed to the bottom surface of outer case 101. The microwave combination module 102 is arranged above the printed board 103 and a heat dissipation channel is reserved between the microwave combination module and the printed board 103. The power module is arranged above the base of the outer shell 101 through the support, and a heat dissipation channel is reserved between the power module and the base as well as between the power module and the top surface. The power amplifier is fixed on the inner side surface of the outer shell 101. Both the side and top surfaces of the outer case 101 are heat dissipating panels 1011 having a plurality of heat dissipating bar holes. The load case 1 has a compact structural design, and the outer shell 101 is flat and smooth as a whole and has small wind resistance. And the cooperation of heat dissipation channel and heat dissipation panel 1011 can make load machine case 1 in the in-process effectual heat that will produce distribute away, the life of each unit in the extension load machine case 1.
As shown in fig. 7, the electrical units of the multifunctional electronic load further include a battery module for supplying power to each unit, a frequency synthesizer unit for providing a reference frequency signal to each unit, a scout receiver unit, a control unit, a sorting identification and target interference signal generation unit, an up-conversion and rf channel unit, and a power amplifier unit 105, as shown in the above-mentioned configuration of the electrical components in the load chassis 1.
The reconnaissance machine receiving unit receives radio frequency signals of the training radar through the receiving and transmitting antenna 7, processes the radio frequency signals by combining with reference frequency signals provided by the frequency synthesizer unit, outputs radar intermediate frequency baseband signals and uploads the signals to the sorting identification and target interference signal generating unit. Specifically, the scout machine receiving unit comprises a limiter, a power amplifier, a filter and a mixer which sequentially carry out data transfer. After receiving the radio frequency signal of the training radar, the receiving and transmitting antenna 7 sequentially carries out the processing of amplitude limiting, amplification and filtering of the radio frequency signal through the amplitude limiter, the power amplifier and the filter, and stable receiving is achieved. Then, the mixer down-converts the radio frequency signal to a radar intermediate frequency baseband signal in combination with the reference frequency signal provided by the frequency synthesizer unit.
The control unit receives the ground control system setting parameters, including pulse parameters, radar parameters, suppression interference patterns, deception interference patterns, smart interference patterns, suppression interference parameters, deception interference parameters and smart frequency aiming noise interference parameters, and sends the parameters to the sorting identification and target interference signal generation unit.
The sorting, identifying and target interference signal generating unit processes the parameters according to the instruction sent by the control unit, processes the radar intermediate frequency baseband signal by combining the reference frequency signal provided by the frequency synthesizer unit, generates a radar target baseband signal, suppresses an interference intermediate frequency baseband signal, deception interference baseband signal or smart frequency-aiming noise interference baseband signal, and uploads the radar target baseband signal, the suppression interference intermediate frequency baseband signal, the deception interference baseband signal or the smart frequency-aiming noise interference baseband signal to the up-conversion and radio frequency channel unit.
Specifically, the sorting identification and target interference signal generation unit comprises an FPGA (field programmable gate array), a DAC (high-speed cable), a DDS (direct digital synthesizer), a repetition frequency tracker, a digital evaluation and pulse measurement circuit and a DRFM (broadband digital frequency storage). The sorting identification and target interference signal generation unit measures the received pulse parameters through a digital evaluation and pulse measurement circuit to generate a detection threshold signal; and sorting and identifying the radar intermediate-frequency baseband signals to generate guide information, guiding the repetition frequency tracker to quickly and accurately track the radar intermediate-frequency baseband signals on the training radar, and outputting various tracking gate information corresponding to the radar intermediate-frequency baseband signals, including a pre-arrival gate, a storage gate and an interference gate.
The up-conversion and radio frequency channel unit up-converts and amplitude-frequency modulates the signals obtained after the processing of the sorting identification and target interference signal generating unit to generate radio frequency echo signals, radio frequency suppression interference signals, deception interference simulation signals or smart frequency aiming noise interference signals, and radiates the signals to the training radar equipment through the power amplification and transceiving antenna 7 unit.
Based on the arrangement of the electrical elements, the multifunctional electronic load can realize multiple functions: 1. simulating radar target echoes; 2. radar suppression interference simulation; 3. simulating radar deception jamming; 4. and smart frequency aiming noise interference simulation.
When the radar target echo is simulated, the DRFM circuit performs high-speed sampling, storage, delay replication and RCS modulation on radar intermediate-frequency baseband signals under the control of tracking wave gate information and detection threshold signals to generate radar target baseband signals.
And the radar target baseband signal is uploaded to the up-conversion and radio frequency channel unit for up-conversion and amplitude modulation, and a radio frequency echo signal is generated.
The radio frequency echo signals are radiated to the training radar through the power amplifier and the receiving and transmitting antenna 7, and radio frequency echo signals of various targets with different directions, distances, speeds and scattering strengths required by tests are provided for the training radar.
When the radar suppresses interference simulation, the sorting recognition and target interference signal generation unit constructs a DDS with frequency modulation and phase modulation functions through the FPGA and the high-speed DAC, and controls the DDS to complete processing of noise patterns, noise bandwidth and power modulation according to interference patterns by using noise modulation digital signals according to radar parameters, suppressed interference patterns and suppressed interference parameters, so that various suppressed interference intermediate-frequency baseband signals of the tested radar are simulated and generated.
And the suppression interference intermediate frequency baseband signal carries out up-conversion and amplitude control through an up-conversion and radio frequency channel unit to generate a radio frequency suppression interference signal.
The radio frequency suppression interference signals after up-conversion and amplitude modulation are radiated to the training radar equipment through the power amplifier and receiving and transmitting antenna 7 unit, and various radio frequency suppression interference signals required by tests are provided for the training radar equipment.
During radar deception jamming simulation, the sorting identification and target jamming signal generating unit carries out time delay modulation, doppler modulation, power modulation and the like of deception jamming according to a deception jamming pattern and a deception jamming parameter, and accordingly a deception jamming baseband signal is generated.
And the deception jamming baseband signal carries out up-conversion and amplitude control through the up-conversion and radio frequency channel unit to generate a deception jamming analog signal.
The deception jamming analog signals after the up-conversion and the amplitude modulation are radiated to the training radar equipment through the power amplifier and receiving and transmitting antenna 7 unit, and various deception jamming analog signals required for testing are provided for the training radar equipment.
Smart frequency-aiming noise interference is a frequency-aiming interference technology with both spoofing and noise interference characteristics. Noise interference is synchronously generated and superposed in the deception interference pulse, and the aiming frequency of the interference is guided through the frequency code, so that smart frequency aiming noise interference can be realized.
When the smart aiming frequency noise interference is simulated, the multifunctional electronic load utilizes the control unit, receives parameters such as radar parameters, smart aiming frequency noise interference parameters and the like set by a ground control system through a communication link of a data transmission radio station of the multi-rotor unmanned aerial vehicle, and sends the parameters to the sorting identification and target interference signal generation unit. The sorting, identifying and target interference signal generating unit receives the radar intermediate frequency baseband signal, completes time delay modulation, doppler modulation, power modulation and other processing of smart interference according to a smart interference pattern rule according to a detection threshold signal, radar parameters and smart frequency aiming noise interference parameters, and utilizes a noise modulation digital signal to control a DDS to complete processing of a noise pattern, a noise bandwidth, power modulation and the like according to an interference pattern rule, so as to simulate and generate a smart frequency aiming noise interference baseband signal of the tested radar.
The smart aiming frequency noise interference baseband signal is subjected to up-conversion and amplitude control through an up-conversion and radio frequency channel unit to generate a smart aiming frequency noise interference signal. The smart frequency-aiming noise interference signal is radiated to the training radar equipment through the power amplifier and the receiving and transmitting antenna 7 unit, and various smart frequency-aiming noise interference signals required for testing are provided for the training radar equipment.
When frequency aiming is carried out, the sorting identification and target interference signal generation unit utilizes a digital frequency measurement and pulse measurement circuit to measure pulse parameters such as radar frequency, pulse width, repetition frequency period and the like in the process of sampling and storing radar intermediate-frequency baseband signals and generates a detection threshold signal. Wherein the frequency information is used to guide smart noise interference for frequency targeting.
As shown in fig. 8, based on the above-mentioned mechanical structure and arrangement of electrical components of the multifunctional electronic load, the method for testing the radar anti-interference performance of the multifunctional electronic load comprises the following steps:
s1, receiving radar radio frequency signals transmitted by a tested radar, processing the signals and generating radar intermediate frequency baseband signals.
The step of generating the radar intermediate frequency baseband signal specifically includes:
s1.1, receiving radar radio frequency signals.
And S1.2, carrying out amplitude limiting, amplification and filtering processing on the radar radio frequency signal.
And S1.3, combining the reference frequency signal to carry out down-conversion on the radar radio-frequency signal processed in the step S1.2 to a radar intermediate-frequency baseband signal.
And S2, receiving and measuring the ground control system setting parameters of the tested radar, and generating a radar target baseband signal, a suppressed interference intermediate frequency baseband signal, a deception interference baseband signal or a smart frequency-aiming noise interference baseband signal after processing the radar intermediate frequency baseband signal by combining the reference frequency signal.
1. The step of generating a radar target baseband signal comprises:
SA2.1, measuring the set parameters of the ground control system of the tested radar to generate a detection threshold signal;
SA2.2, sorting and identifying the radar intermediate-frequency baseband signals, generating guide information, guiding the tracking of the radar intermediate-frequency baseband signals, and outputting corresponding tracking wave gate information;
and SA2.3, under the control of the tracking wave gate information and the detection threshold signal, performing high-speed sampling, storage, delay replication and RCS modulation on the radar intermediate-frequency baseband signal to generate a radar target baseband signal.
2. The step of generating the squelched intermediate frequency baseband signal comprises:
SB2.1, constructing a DDS with frequency modulation and phase modulation functions by using an FPGA (field programmable gate array) and a DAC (high-speed cable);
SB2.2, setting radar parameters, suppression interference patterns and suppression interference parameters in the parameters according to the ground control system of the tested radar, controlling the DDS by using the noise modulation digital signal, completing the processing of the noise patterns, the noise bandwidth and the power modulation of the radar intermediate frequency baseband signal according to the suppression interference pattern rule, and generating various suppression interference intermediate frequency baseband signals of the tested radar.
3. The step of generating a spoofed interfering baseband signal includes:
SC2.1, measuring the set parameters of the ground control system of the tested radar to generate a detection threshold signal;
SC2.2, sorting and identifying the radar intermediate frequency baseband signals, generating guide information, guiding the tracking of the radar intermediate frequency baseband signals, and outputting corresponding tracking wave gate information;
and SC2.3, under the control of the tracking gate information and the detection threshold signal, processing the radar intermediate frequency baseband signal according to a deception jamming pattern and a deception jamming parameter, wherein the deception jamming processing comprises time delay modulation, doppler modulation and power modulation, and generating a radar deception jamming baseband signal.
4. The step of generating a smart frequency-noise-rejection baseband signal comprises:
SD2.1, measuring the set parameters of the ground control system of the tested radar to generate a detection threshold signal;
SD2.2, constructing a DDS with frequency modulation and phase modulation functions through an FPGA (field programmable gate array) and a DAC (high-speed cable);
SD2.3, according to the radar parameters and smart aiming frequency noise interference parameters in the set parameters of the detection threshold signal and the ground control system of the tested radar, the processing of smart interference including time delay modulation, doppler modulation and power modulation is completed according to a smart interference pattern rule, the processing of noise pattern, noise bandwidth and power modulation is completed by controlling a DDS (direct digital synthesizer) according to an interference pattern rule by using a noise modulation digital signal, and a smart aiming frequency noise interference baseband signal of the tested radar is generated.
And S3, performing up-conversion and amplitude-frequency modulation on the signal generated in the step S2.
And S4, radiating the signal processed in the step S3 to training radar equipment.
The invention also discloses a computer readable storage medium, a computer program is stored on the medium, and the method for testing the anti-interference performance of the radar is executed after the computer program is operated.
The invention also discloses a computer system which comprises a processor and a storage medium, wherein the storage medium is stored with a computer program, and the processor reads the computer program from the storage medium and runs the computer program to execute the method for testing the radar anti-interference performance.
The radar target echo simulation system has the functions of receiving and down-converting the radar equipment radio frequency signals, measuring pulse parameters of the radar equipment radio frequency signals, sorting and identifying the radar equipment radio frequency signals, simulating radar target echoes, simulating radar suppression interference signals, simulating radar deception interference signals, simulating smart frequency aiming noise interference and the like. A reliable and effective method is provided for radar anti-interference performance test.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The various illustrative logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk (disk) and disc (disc), as used herein, includes Compact Disc (CD), laser disc, optical disc, digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks (disks) usually reproduce data magnetically, while discs (discs) reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for testing the anti-interference performance of a radar is characterized by comprising the following steps:
s1, receiving radar radio frequency signals transmitted by a tested radar, processing the signals and generating radar intermediate frequency baseband signals;
s2, receiving and measuring the ground control system setting parameters of the tested radar, and generating a radar target baseband signal, a suppression interference intermediate frequency baseband signal, a deception interference baseband signal or a smart aiming noise interference baseband signal after processing the radar intermediate frequency baseband signal by combining the reference frequency signal;
s3, performing up-conversion and amplitude-frequency modulation on the signal generated in the step S2;
and S4, radiating the signal processed in the step S3 to training radar equipment.
2. The method for radar anti-interference performance test according to claim 1, wherein the step of generating the radar intermediate frequency baseband signal in step S1 includes:
s1.1, receiving a radar radio frequency signal;
s1.2, amplitude limiting, amplifying and filtering are carried out on the radar radio frequency signal;
and S1.3, combining the reference frequency signal to carry out down-conversion on the radar radio frequency signal processed in the step S1.2 to a radar intermediate frequency baseband signal.
3. The method for radar anti-interference performance test according to claim 1, wherein the step of generating the radar target baseband signal in step S2 includes:
SA2.1, measuring the set parameters of the ground control system of the tested radar to generate a detection threshold signal;
SA2.2, sorting and identifying the radar intermediate-frequency baseband signals, generating guide information, guiding the tracking of the radar intermediate-frequency baseband signals, and outputting corresponding tracking wave gate information;
and SA2.3, under the control of the tracking wave gate information and the detection threshold signal, performing high-speed sampling, storage, delay replication and RCS modulation on the radar intermediate-frequency baseband signal to generate a radar target baseband signal.
4. The method for radar anti-interference performance test according to claim 1, wherein the step of generating the squelched if baseband signal in step S2 comprises:
SB2.1, constructing a DDS with frequency modulation and phase modulation functions by an FPGA (field programmable gate array) and a DAC (high-speed cable);
SB2.2, setting radar parameters, suppression interference patterns and suppression interference parameters in the parameters according to the ground control system of the tested radar, controlling the DDS by using the noise modulation digital signal, completing the processing of noise patterns, noise bandwidth and power modulation of the radar intermediate frequency baseband signal according to the suppression interference pattern rule, and generating various suppression interference intermediate frequency baseband signals of the tested radar.
5. The method for radar anti-interference performance test according to claim 1, wherein the step of generating the spoofed interference baseband signal in step S2 includes:
SC2.1, measuring the ground control system setting parameters of the tested radar to generate a detection threshold signal;
SC2.2, sorting and identifying the radar intermediate frequency baseband signals, generating guide information, guiding the tracking of the radar intermediate frequency baseband signals, and outputting corresponding tracking wave gate information;
and SC2.3, under the control of the tracking gate information and the detection threshold signal, processing the radar intermediate frequency baseband signal according to a deception jamming pattern and a deception jamming parameter, wherein the deception jamming processing comprises time delay modulation, doppler modulation and power modulation, and generating a radar deception jamming baseband signal.
6. The method for radar anti-interference performance test according to claim 1, wherein the step of generating smart frequency-aiming noise interference baseband signals in step S2 comprises:
SD2.1, measuring the set parameters of the ground control system of the tested radar to generate a detection threshold signal;
SD2.2, constructing a DDS with frequency modulation and phase modulation functions through an FPGA (field programmable gate array) and a DAC (high-speed cable);
SD2.3, according to the radar parameters and smart aiming frequency noise interference parameters in the set parameters of the detection threshold signal and the ground control system of the tested radar, the processing of smart interference including time delay modulation, doppler modulation and power modulation is completed according to a smart interference pattern rule, the processing of noise pattern, noise bandwidth and power modulation is completed by controlling a DDS (direct digital synthesizer) according to an interference pattern rule by using a noise modulation digital signal, and a smart aiming frequency noise interference baseband signal of the tested radar is generated.
7. A computer-readable storage medium characterized by: a computer program stored on a medium, the computer program being configured to, when executed, perform a method for radar anti-interference performance testing as claimed in any one of claims 1 to 6.
8. A computer system, characterized by: the radar anti-interference performance test method comprises a processor and a storage medium, wherein a computer program is stored on the storage medium, and the processor reads the computer program from the storage medium and runs the computer program to execute the radar anti-interference performance test method according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087121.5A CN115656941A (en) | 2022-09-07 | 2022-09-07 | Radar anti-interference performance test method, storage medium and computer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087121.5A CN115656941A (en) | 2022-09-07 | 2022-09-07 | Radar anti-interference performance test method, storage medium and computer system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115656941A true CN115656941A (en) | 2023-01-31 |
Family
ID=84983291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211087121.5A Pending CN115656941A (en) | 2022-09-07 | 2022-09-07 | Radar anti-interference performance test method, storage medium and computer system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115656941A (en) |
-
2022
- 2022-09-07 CN CN202211087121.5A patent/CN115656941A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115494465A (en) | Multifunctional electronic load for radar anti-interference performance test | |
| Catarinucci et al. | A cost-effective SDR platform for performance characterization of RFID tags | |
| CN108132390B (en) | Method and system for improving field intensity in reverberation room and simulating composite field electromagnetic environment | |
| US10768216B2 (en) | Test arrangement and test method | |
| CN102386986B (en) | A kind of method of testing, Apparatus and system of OTA performance of wireless terminal | |
| CN111123215A (en) | Multi-channel-based full polarization target implementation system and method | |
| CN201765324U (en) | Automatic tester of phased-array antenna | |
| CN107479040A (en) | A kind of Compact Range vehicle-mounted millimeter wave Radar Measurement System | |
| CN108573629A (en) | A kind of unmanned aerial vehicle onboard radar electronic warfare simulated training system and training method | |
| JP4915050B2 (en) | Electromagnetic field measuring apparatus and electromagnetic field measuring method | |
| CN110554618B (en) | Communication system simulation method based on radar darkroom | |
| CN110703213B (en) | Radar interference environment equivalent physical simulation method and device | |
| CN207336743U (en) | A kind of two angle car radar target simulation systems | |
| CN105911529A (en) | Echo signal simulation method and system as well as echo signal simulator | |
| CN113835070A (en) | Radar tactical performance detection and anti-interference capability evaluation simulator | |
| CN107860989A (en) | Mancarried electronic aid electromagnetic interference aircraft coupling path loss test method | |
| KR102164476B1 (en) | The apparatus for the electronic warfare system with non real time threat analysis and Electronic attack | |
| CN114280556A (en) | Method and device for simulating air-shot bait | |
| CN115656941A (en) | Radar anti-interference performance test method, storage medium and computer system | |
| US11428723B2 (en) | Method and system for emulating an electromagnetic environment in an anechoic chamber | |
| CN219162371U (en) | Millimeter wave radar dynamic target coverage area automatic test equipment | |
| KR102295191B1 (en) | HILS(Hardware In Loop Simulation) system for Radar deception apparatus and simulation method thereof | |
| CN218938493U (en) | Small-sized multifunctional electronic load | |
| CN218181089U (en) | Radar complex electromagnetic environment test evaluation system and device | |
| CN114706102B (en) | High-power wave beam variable positioning interference device and method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |