CN213813934U - Large-bandwidth real-time high-speed radar target simulator - Google Patents
Large-bandwidth real-time high-speed radar target simulator Download PDFInfo
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- CN213813934U CN213813934U CN202022933811.0U CN202022933811U CN213813934U CN 213813934 U CN213813934 U CN 213813934U CN 202022933811 U CN202022933811 U CN 202022933811U CN 213813934 U CN213813934 U CN 213813934U
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Abstract
The utility model discloses a real-time high-speed radar target simulator of big bandwidth, a serial communication port, including radio frequency signal receiving element, the high-speed processing unit of broadband, radio frequency signal transmitting unit and the control unit, radio frequency signal receiving element, the high-speed processing unit of broadband and radio frequency signal transmitting unit electricity in proper order are connected, and the equal electricity of radio frequency signal receiving element, the high-speed processing unit of broadband and radio frequency signal transmitting unit connects the control unit. The device is provided with a high-speed processing signal processing board, provides a large-bandwidth radar target simulator, and has wide frequency band coverage, high processing rate, high frequency measurement precision and high stability.
Description
Technical Field
The utility model relates to a real-time high-speed radar target simulator of big bandwidth belongs to electron countermeasure technical field.
Background
The radar target simulator is used for simulating radio frequency target echoes, clutter interference signals, radiation environment signals and the like, the existing electronic warfare forms are more complex, the signal styles are changeable, and the radar target simulator is correspondingly required to have the capacity of adapting to and simulating dense complex signal streams and the capacity of covering wide frequency bands. At present, most of similar signal source products are small-bandwidth equipment, the processing speed is low, and the requirements of electronic warfare development cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art's defect, provide a real-time high-speed radar target simulation ware of big bandwidth, be equipped with high-speed processing signal processing board, provide big bandwidth radar target simulation ware, possess wide band section cover, high processing rate, high frequency measurement precision and high stability.
In order to achieve the above object, the utility model provides a real-time high-speed radar target simulator of big bandwidth, including radio frequency signal receiving element, the high-speed processing unit of broadband, radio frequency signal transmitting unit and the control unit, radio frequency signal receiving element, the high-speed processing unit of broadband and radio frequency signal transmitting unit electricity in proper order are connected, and the equal electricity of radio frequency signal receiving element, the high-speed processing unit of broadband and radio frequency signal transmitting unit connects the control unit.
Preferably, the radio frequency signal receiving unit comprises a radar receiver, a low noise amplifier and an instantaneous measurement module, and the radar receiver, the low noise amplifier and the instantaneous measurement module are electrically connected in sequence.
Preferably, the broadband high-speed processing unit includes an a/D converter, a channelization processing unit, a quadrature down-converter, a baseband signal processing component, a signal modulation component, and a D/a converter, and the a/D converter, the channelization processing unit, the quadrature down-converter, the baseband signal processing component, the signal modulation component, and the D/a converter are electrically connected in sequence.
Preferentially, the radio frequency signal transmitting unit comprises an up-converter, an amplitude control module and a radar transmitter, wherein the up-converter, the amplitude control module and the radar transmitter are electrically connected in sequence.
Preferably, the control unit employs POWERPC.
Preferably, the instantaneous frequency measurement module is wk-3575 IFM.
Preferably, the signal modulation component is of type TZZY 20.
Preferably, the amplitude control module is of type nc 131630.
The utility model discloses the beneficial effect who reaches:
the radio frequency signal receiving unit receives an input radar transmitting signal, after amplitude limiting and amplification, manual amplitude conversion is carried out on the signal, the radio frequency signal receiving unit is in a constant input amplitude state, and the radar transmitting signal is down-converted to be within the instantaneous working frequency range of the intermediate frequency signal processing unit through multiple frequency conversion. The broadband high-speed processing unit generates various target echoes, interferences, clutter and radiation source signals. The radio frequency signal transmitting unit up-converts the intermediate frequency signal generated by the broadband high-speed processing unit to a frequency matched with the input signal according to the frequency adopted when the radio frequency signal receiving unit performs down-conversion, and outputs the signal requiring amplitude and pulse modulation through the output amplitude control module; the control unit controls the radio frequency signal receiving unit, the broadband high-speed processing unit and the radio frequency signal transmitting unit and calculates data. The device is provided with a high-speed processing signal processing board, provides a large-bandwidth radar target simulator, and has wide frequency band coverage, high processing rate, high frequency measurement precision and high stability.
Drawings
Fig. 1 is a schematic block diagram of the present apparatus.
Detailed Description
The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
A large-bandwidth real-time high-speed radar target simulator comprises a radio frequency signal receiving unit, a broadband high-speed processing unit, a radio frequency signal transmitting unit and a control unit.
A radio frequency signal receiving unit: receiving an input radar transmitting signal, carrying out manual amplitude conversion on the signal after amplitude limiting and amplification, and enabling a radio frequency signal receiving unit to be in a constant input amplitude state; and the radar emission signal is down-converted into the instantaneous working frequency range of the intermediate frequency signal processing unit through multiple frequency conversion.
Broadband high-speed processing unit: the device is a core component for generating various target echoes, interferences, clutter and radiation source signals.
The radio frequency signal transmitting unit: according to the frequency adopted by the radio frequency signal receiving unit during down-conversion, the intermediate frequency signal generated by the broadband high-speed processing unit is up-converted to the frequency matched with the input signal, and the signal output requiring amplitude and pulse modulation is realized through the output amplitude control module;
a control unit: the device is used for controlling the radio frequency signal receiving unit, the broadband high-speed processing unit and the radio frequency signal transmitting unit and resolving data.
The realized technical indexes are as follows:
framework form: a VPX system; instantaneous bandwidth: 2.5 GHz; the system sampling rate: 6.4 GHz; simulation recurrence time: 0.16 ns; adapting to agile signal bandwidth: 4 GHz; bandwidth of analog radiation signal: 3 GHz; doppler modulation accuracy: 0.2 Hz.
The radar receiver, the low noise amplifier, the a/D converter, the channelized processing unit, the quadrature down converter, the baseband signal processing component, the D/a converter, the up converter, the radar transmitter and the control unit, which are available in the prior art, may be selected by those skilled in the art according to actual needs, and this embodiment is not illustrated one by one.
The device can be installed on multiple platforms such as an airplane-mounted platform, a ship-based platform, a missile-mounted platform and a vehicle-mounted platform or used in a laboratory environment, and is matched with different radar receiving and transmitting units to cover the requirements of any microwave frequency band, so that the device is used for reconnaissance of a plurality of different scenes such as interference, signal simulation and the like.
When the device is used in a large microwave anechoic chamber system, single or multiple target channel outputs are connected to the array feed channel, and can be respectively configured into a target, deceptive interference, suppression interference, clutter, a foil strip or a radiation source signal according to test requirements to construct a real external field environment for testing the target detection performance and the electronic impedance performance of the tested seeker under a complex electromagnetic environment. The specific working principle is as follows:
and the radio frequency signal receiving unit receives the radar transmitting signal and performs frequency conversion and power control. The radio frequency signal receiving unit transmits signals through the tested equipment fed with injection or space radiation, and microwave signals are directly subjected to amplitude limiting amplification processing.
After amplitude processing, the microwave signal is coupled with one path of output, frequency detection of a broadband channelized filter is carried out, an input signal is down-converted and guided into a working frequency range of a broadband high-speed processing unit according to a channel overlapping detection result, and modulation and processing of the signal are achieved in an extended SDRM component mode.
PowerPC, collectively known as Performance Optimization With Enhanced RISC-Performance Computing, sometimes abbreviated PPC, is a Reduced Instruction Set (RISC) architecture central processing unit.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (8)
1. A large-bandwidth real-time high-speed radar target simulator is characterized by comprising a radio-frequency signal receiving unit, a broadband high-speed processing unit, a radio-frequency signal transmitting unit and a control unit, wherein the radio-frequency signal receiving unit, the broadband high-speed processing unit and the radio-frequency signal transmitting unit are electrically connected in sequence, and the radio-frequency signal receiving unit, the broadband high-speed processing unit and the radio-frequency signal transmitting unit are all electrically connected with the control unit.
2. The large-bandwidth real-time high-speed radar target simulator of claim 1, wherein the radio frequency signal receiving unit comprises a radar receiver, a low noise amplifier and an instantaneous measurement module, and the radar receiver, the low noise amplifier and the instantaneous measurement module are electrically connected in sequence.
3. The large-bandwidth real-time high-speed radar target simulator of claim 1, wherein the wideband high-speed processing unit comprises an a/D converter, a channelizing processing unit, a quadrature down-converter, a baseband signal processing component, a signal modulation component and a D/a converter, and the a/D converter, the channelizing processing unit, the quadrature down-converter, the baseband signal processing component, the signal modulation component and the D/a converter are electrically connected in sequence.
4. The large-bandwidth real-time high-speed radar target simulator of claim 1, wherein the radio frequency signal transmitting unit comprises an up-converter, an amplitude control module and a radar transmitter, and the up-converter, the amplitude control module and the radar transmitter are electrically connected in sequence.
5. The large bandwidth real-time high speed radar target simulator of claim 1, wherein the control unit is POWERPC.
6. The large bandwidth real-time high speed radar target simulator of claim 2, wherein the instantaneous frequency measurement module is wk-3575 IFM.
7. The large-bandwidth real-time high-speed radar target simulator of claim 3, wherein the signal modulation module is TZZY 20.
8. The large-bandwidth real-time high-speed radar target simulator according to claim 4, wherein the amplitude control module is of type nc 131630.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022933811.0U CN213813934U (en) | 2020-12-10 | 2020-12-10 | Large-bandwidth real-time high-speed radar target simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022933811.0U CN213813934U (en) | 2020-12-10 | 2020-12-10 | Large-bandwidth real-time high-speed radar target simulator |
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| Publication Number | Publication Date |
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| CN213813934U true CN213813934U (en) | 2021-07-27 |
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| CN202022933811.0U Active CN213813934U (en) | 2020-12-10 | 2020-12-10 | Large-bandwidth real-time high-speed radar target simulator |
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