CN115494465A - Multifunctional electronic load for radar anti-interference performance test - Google Patents
Multifunctional electronic load for radar anti-interference performance test Download PDFInfo
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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
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- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
Abstract
The invention discloses a multifunctional electronic load for a radar anti-interference performance test, which comprises a battery module for supplying power to each unit, a frequency synthesizer unit for providing reference frequency signals for each unit, a reconnaissance machine receiving unit, a control unit, a sorting identification and target interference signal generating unit, an up-conversion and radio frequency channel unit and a power amplification unit, wherein the power amplifier unit is used for amplifying the power of each unit; the radar target echo simulation system has the functions of receiving and down-converting radar radio-frequency signals, measuring pulse parameters of the radar radio-frequency signals, sorting and identifying the radar 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 convenient and scientific radar anti-electromagnetic environment platform is constructed.
Description
Technical Field
The invention belongs to the field of radar tests, and particularly relates to a multifunctional electronic load for a radar anti-interference performance test.
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 electromagnetic environment of the battlefield 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 convenient and scientific platform for the radar to resist the electromagnetic environment is required to be constructed.
Disclosure of Invention
In order to solve the existing problems, the invention provides a multifunctional electronic load for a radar anti-interference performance test, which comprises the following specific schemes:
a multifunctional electronic load for radar anti-interference performance test comprises a battery module for supplying power to each unit, a frequency synthesizer unit for providing reference frequency signals for each unit, a reconnaissance machine receiving unit, a control unit, a sorting identification and target interference signal generation unit, an up-conversion and radio frequency channel unit and a power amplification unit;
the reconnaissance aircraft receiving unit receives radio frequency signals of a training radar through a receiving and transmitting antenna, processes the radio frequency signals by combining 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;
the control unit receives the setting parameters of the ground control system and sends the setting parameters to the sorting recognition and target interference signal generation unit;
the sorting identification and target interference signal generation 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 upper frequency conversion and radio frequency channel unit;
the up-conversion and radio frequency channel unit performs up-conversion and amplitude-frequency modulation on the signals obtained after the sorting identification and target interference signal generation unit processes the signals to generate radio frequency echo signals, radio frequency suppression interference signals, deception interference simulation signals or smart frequency-aiming noise interference signals, and the signals are radiated to the training radar equipment through the power amplification and receiving and transmitting antenna unit.
Preferably, the reconnaissance aircraft receiving unit includes an amplitude limiter, a power amplifier, a filter and a mixer which sequentially perform data transmission, after the receiving and transmitting antenna receives the radio frequency signal of the training radar, the processing of amplitude limiting, amplification and filtering of the radio frequency signal is performed sequentially through the amplitude limiter, the power amplifier and the filter, and then the mixer performs down-conversion on the radio frequency signal to the radar intermediate frequency baseband signal by combining with the reference frequency signal provided by the frequency synthesizer unit.
Preferably, 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.
Preferably, the sorting, identifying and target interfering signal generating unit comprises an FPGA (field programmable gate array), a DAC (high speed cable), a DDS, a repetition frequency tracker, a digital evaluation and pulse measurement circuit, and a DRFM (wideband digital frequency storage).
The sorting identification and target interference signal generating unit measures the received pulse parameters through a digital evaluation and pulse measuring 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 of 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.
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.
When the radar suppresses interference simulation, the sorting, identifying and target interference signal generating 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 and rules 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.
During the radar deception jamming simulation, the sorting identification and target jamming signal generating unit carries out processing such as time delay modulation, doppler modulation and power modulation of deception jamming according to deception jamming patterns and deception jamming parameters, and accordingly deception jamming baseband signals are generated.
When the smart frequency-aiming noise interference is simulated, the sorting, identifying and target interference signal generating unit completes the processing of time delay modulation, doppler modulation, power modulation and the like of the smart interference according to a smart interference pattern rule according to a detection threshold signal, radar parameters and the smart frequency-aiming noise interference parameters, controls the DDS according to an interference pattern rule by using a noise modulation digital signal to complete the processing of noise pattern, noise bandwidth, power modulation and the like, and simulates and generates the smart frequency-aiming noise interference baseband signal of the tested radar.
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 convenient and scientific radar anti-electromagnetic environment platform is constructed.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of 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 other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic perspective view of a 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 box 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in figure 1, the multifunctional electronic load for the radar anti-interference performance test can be hung on an unmanned aerial vehicle platform, a typical radar counterwork system 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 counterwork system is simulated, 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 mounting member 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 connection plate 501 is fixed to the bottom surface of the load 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 transceiving antenna 7 is a flat hollow printed board 103 antenna, and a plurality of reinforcing ribs 701 are arranged 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 receiving unit, a sorting identification and target interference generating 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 a printed board 103. The power module is a lithium battery 104. Among them, the printed board 103 is fixed to the bottom surface of the 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 the heat dissipation channel and the heat dissipation panel 1011 can effectively dissipate the generated heat in the use process of the load case 1, and prolong the service life of each unit in the load 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 plane receiving unit includes a limiter, a power amplifier, a filter, and a mixer, which sequentially perform data transfer. After receiving the radio frequency signal of the training radar, the transceiver antenna 7 sequentially performs the processing of amplitude limiting, amplification and filtering of the radio frequency signal through the amplitude limiter, the power amplifier and the filter, so as to realize stable receiving. 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 upper frequency 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 of 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 performs up-conversion and amplitude-frequency modulation on the signals obtained after the sorting identification and target interference signal generation unit processes the signals to generate radio frequency echo signals, radio frequency suppression interference signals, deception interference analog signals or smart frequency-aiming noise interference signals, and the signals are radiated 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 an 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, identifying and target interference signal generating 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 and rules 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 the radar deception jamming simulation, the sorting identification and target jamming signal generating unit carries out processing such as time delay modulation, doppler modulation and power modulation of deception jamming according to deception jamming patterns and deception jamming parameters, and accordingly deception jamming baseband signals are 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 up-conversion and amplitude modulation are radiated to the training radar equipment through a 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.
The smart frequency aiming noise interference is a frequency aiming interference technology with the characteristics of deception and noise interference. 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 frequency aiming noise interference is simulated, the multifunctional electronic load utilizes the control unit, receives parameters such as radar parameters, the smart frequency aiming noise interference parameters and the like set by the 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 recognition 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 frequency-aiming noise interference baseband signal is subjected to up-conversion and amplitude control through the up-conversion and radio frequency channel unit to generate a smart frequency-aiming noise interference signal. The smart aiming frequency noise interference signal is radiated to the training radar equipment through the power amplifier and receiving and transmitting antenna 7 unit, and various smart aiming frequency 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.
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 convenient and scientific radar anti-electromagnetic environment platform is constructed.
As shown in fig. 8, based on the above-mentioned mechanical structure and electrical component arrangement 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 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.
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 wave gate information and the detection threshold signal, processing of deception interference, including time delay modulation, doppler modulation and power modulation, is carried out on the radar intermediate frequency baseband signal according to a deception interference pattern and a deception interference parameter, and a radar deception interference baseband signal is generated.
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, 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.
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, wherein a computer program is stored on the medium, and after the computer program runs, the method for testing the anti-interference performance of the radar 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.
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 (4)
1. A multi-functional electronic load for radar anti-interference performance test, its characterized in that: the multifunctional electronic load comprises a battery module for supplying power to each unit, a frequency synthesizer unit for providing reference frequency signals for each unit, a scout machine receiving unit, a control unit, a sorting identification and target interference signal generating unit, an up-conversion and radio frequency channel unit and a power amplification unit;
the reconnaissance aircraft receiving unit receives radio frequency signals of a training radar through a receiving and transmitting antenna, processes the radio frequency signals by combining 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;
the control unit receives the setting parameters of the ground control system and sends the setting parameters to the sorting recognition and target interference signal generation unit;
the sorting identification and target interference signal generation 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 upper frequency conversion and radio frequency channel unit;
the up-conversion and radio frequency channel unit performs up-conversion and amplitude-frequency modulation on the signals obtained after the sorting identification and target interference signal generation unit processes the signals to generate radio frequency echo signals, radio frequency suppression interference signals, deception interference simulation signals or smart frequency-aiming noise interference signals, and the signals are radiated to the training radar equipment through the power amplification and receiving and transmitting antenna unit.
2. The multifunctional electronic load for radar anti-interference performance test according to claim 1, wherein: the reconnaissance machine receiving unit comprises an amplitude limiter, a power amplifier, a filter and a frequency mixer which sequentially transmit data, the receiving and transmitting antenna receives radio-frequency signals of the training radar, the radio-frequency signals sequentially undergo amplitude limiting, amplification and filtering processing through the amplitude limiter, the power amplifier and the filter, and then the frequency mixer combines reference frequency signals provided by the frequency synthesizer unit to carry out down-conversion on the radio-frequency signals to radar intermediate-frequency baseband signals.
3. The multifunctional electronic load for radar antijam performance test of claim 2, wherein: 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 aiming frequency noise interference parameters.
4. The multifunctional electronic load for radar antijamming performance testing according to claim 3, wherein: 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; 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;
when radar target echo is simulated, the DRFM circuit samples, stores, copies in a delay mode and modulates RCS (radar intermediate frequency) to radar intermediate frequency baseband signals at a high speed under the control of tracking wave gate information and detection threshold signals to generate radar target baseband signals;
when the radar suppresses interference simulation, the sorting, identifying and target interference signal generating 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 the processing of noise patterns, noise bandwidth and power modulation according to interference patterns and rules 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;
during radar deception jamming simulation, the sorting identification and target jamming signal generating unit carries out processing such as time delay modulation, doppler modulation and power modulation of deception jamming according to a deception jamming pattern and a deception jamming parameter, and accordingly a deception jamming baseband signal is generated;
when the smart aiming frequency noise interference is simulated, the sorting identification and target interference signal generating unit completes processing such as time delay modulation, doppler modulation and power modulation of the smart interference according to a smart interference pattern rule and a detection threshold signal, radar parameters and the smart aiming frequency noise interference parameters, controls the DDS according to an interference pattern rule by using a noise modulation digital signal to complete processing such as noise pattern, noise bandwidth and power modulation, and simulates and generates a smart aiming frequency noise interference baseband signal of the tested radar.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116413664A (en) * | 2023-04-18 | 2023-07-11 | 扬州宇安电子科技有限公司 | Doppler noise interference generating device and method |
| CN116865774A (en) * | 2023-09-04 | 2023-10-10 | 中国电子科技集团公司第十四研究所 | Amplitude modulation signal generation method based on saturated power amplifier |
| CN117420515A (en) * | 2023-12-19 | 2024-01-19 | 南京航天工业科技有限公司 | Adaptive interference system and method for multiple radar signals |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102174058B1 (en) * | 2019-10-01 | 2020-11-04 | 엘아이지넥스원 주식회사 | Target simulator for unmanned aircraft mounted synthetic aperture radar |
| CN212433393U (en) * | 2020-04-22 | 2021-01-29 | 安徽华可智能科技有限公司 | Radar interference simulation equipment |
| KR20210079897A (en) * | 2019-12-20 | 2021-06-30 | 한화시스템 주식회사 | HILS(Hardware In Loop Simulation) system for Radar deception apparatus and simulation method thereof |
| CN113835070A (en) * | 2021-09-27 | 2021-12-24 | 大连海天防务科技有限公司 | Radar tactical performance detection and anti-interference capability evaluation simulator |
-
2022
- 2022-09-07 CN CN202211087126.8A patent/CN115494465A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102174058B1 (en) * | 2019-10-01 | 2020-11-04 | 엘아이지넥스원 주식회사 | Target simulator for unmanned aircraft mounted synthetic aperture radar |
| KR20210079897A (en) * | 2019-12-20 | 2021-06-30 | 한화시스템 주식회사 | HILS(Hardware In Loop Simulation) system for Radar deception apparatus and simulation method thereof |
| CN212433393U (en) * | 2020-04-22 | 2021-01-29 | 安徽华可智能科技有限公司 | Radar interference simulation equipment |
| CN113835070A (en) * | 2021-09-27 | 2021-12-24 | 大连海天防务科技有限公司 | Radar tactical performance detection and anti-interference capability evaluation simulator |
Non-Patent Citations (1)
| Title |
|---|
| 袁兴鹏;: "基于DRFM组件的宽带雷达抗干扰仿真测试系统设计", 国外电子测量技术, no. 09, 30 September 2016 (2016-09-30) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116413664A (en) * | 2023-04-18 | 2023-07-11 | 扬州宇安电子科技有限公司 | Doppler noise interference generating device and method |
| CN116413664B (en) * | 2023-04-18 | 2023-10-10 | 扬州宇安电子科技有限公司 | Doppler noise interference generating device and method |
| CN116865774A (en) * | 2023-09-04 | 2023-10-10 | 中国电子科技集团公司第十四研究所 | Amplitude modulation signal generation method based on saturated power amplifier |
| CN116865774B (en) * | 2023-09-04 | 2023-11-14 | 中国电子科技集团公司第十四研究所 | Amplitude modulation signal generation method based on saturated power amplifier |
| CN117420515A (en) * | 2023-12-19 | 2024-01-19 | 南京航天工业科技有限公司 | Adaptive interference system and method for multiple radar signals |
| CN117420515B (en) * | 2023-12-19 | 2024-03-12 | 南京航天工业科技有限公司 | Adaptive interference system and method for multiple radar signals |
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