CN209765036U - Complex radar signal simulator - Google Patents
Complex radar signal simulator Download PDFInfo
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- CN209765036U CN209765036U CN201920233117.2U CN201920233117U CN209765036U CN 209765036 U CN209765036 U CN 209765036U CN 201920233117 U CN201920233117 U CN 201920233117U CN 209765036 U CN209765036 U CN 209765036U
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Abstract
the utility model discloses a complicated radar signal simulator, including control module, Ku wave band source plug-in components, X wave band frequency conversion module, C wave band frequency conversion module and LS wave band frequency conversion module, control module passes through serial bus and is connected with Ku wave band source plug-in components, X wave band frequency conversion module, C wave band frequency conversion module and LS wave band frequency conversion module respectively, Ku wave band source plug-in components, X wave band frequency conversion module, C wave band frequency conversion module are connected with a joint of three-select switch respectively, three-select switch and 6-18Ghz wave band power amplifier are connected, LS wave band frequency conversion module and 0.3-6Ghz wave band power amplifier are connected, Ku wave band source plug-in components are connected with X wave band frequency conversion module, C wave band frequency conversion module and LS wave band frequency conversion module respectively; the control module is also connected with the display and the keyboard respectively. The utility model discloses a complicated radar signal simulator has functions such as non-linear frequency modulation, repetition frequency jitter, frequency diversity and antenna simulation scanning, and the practicality is strong.
Description
Technical Field
The utility model relates to a complicated radar signal simulator belongs to the radar field.
Background
With the rapid development of electronic technology, the radar technology has qualitative leap in signal processing and waveform synthesis, and the application of technologies such as rapid frequency agility, frequency modulation and phase modulation, frequency variation and repetition frequency modulation and the like improves the anti-interference and multi-target processing capability of the radar, and simultaneously brings higher and more difficult technical requirements for electronic countermeasure. In order to be in a favorable position in future electronic countermeasure, a multi-batch multi-system radar signal comprehensive simulation system for simulating a complex electronic electromagnetic environment in war is developed to provide electronic countermeasure research and simultaneously provide radar signals for army simulating an enemy electromagnetic environment so as to improve the fighting capacity of the electric war army. The radar signal simulation system (hereinafter referred to as simulator) simulates the emission of radar signals, checks the states of a radar receiving channel, the direction finding of an electronic reconnaissance interferometer and a radar warning device, and has the characteristics of universality, safety and convenience.
At present, the function and the signal simulation style of the radar signal simulator are relatively simple, and the practicability is poor.
SUMMERY OF THE UTILITY MODEL
The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a complicated radar signal simulator has functions such as non-linear frequency modulation, repetition frequency shake, frequency diversity and antenna simulation scanning, and the practicality is strong.
The technical scheme is as follows: in order to solve the technical problem, the utility model discloses a complicated radar signal simulator, including control module, Ku wave band source plug-in components, X wave band frequency conversion module, C wave band frequency conversion module and LS wave band frequency conversion module, control module passes through serial bus and is connected with Ku wave band source plug-in components, X wave band frequency conversion module, C wave band frequency conversion module and LS wave band frequency conversion module respectively, Ku wave band source plug-in components, X wave band frequency conversion module, C wave band frequency conversion module are connected with a joint of three-select one switch respectively, three-select one switch is connected with 6-18Ghz wave band power amplifier, LS wave band frequency conversion module is connected with 0.3-6Ghz wave band power amplifier, Ku wave band source plug-in components are connected with X wave band frequency conversion module, C wave band frequency conversion module and LS wave band frequency conversion module respectively; the control module is also connected with the display and the keyboard respectively.
Preferably, the Ku band source plug-in includes a control unit, a 3.8G frequency conversion module, a Ku local oscillator and a Ku frequency conversion module, the control unit is connected with the 3.8G frequency conversion module and the Ku local oscillator respectively, the Ku frequency conversion module is connected with the Ku local oscillator and the 3.8G frequency conversion module respectively, the control unit is composed of an FPGA and a DDS, the FPGA is connected with the DDS, the first filter and the first amplifier in sequence, and the first amplifier is connected with the output end.
Preferably, the X-band frequency conversion module includes a second filter, a third filter, a second amplifier and a first coupling detection module, and after the signals of 13-18G are filtered by the second filter, the signals are down-converted by the X local oscillator, and then output after sequentially passing through the third filter, the second amplifier and the first coupling detection module.
Preferably, the C-band frequency conversion module includes a fourth filter, a fifth filter, a third amplifier and a second coupling detection module, and after the signal of 13-18G is filtered by the fourth filter, the local oscillator is down-converted in the C-band frequency conversion, and then the signal is output after sequentially passing through the fifth filter, the third amplifier and the second coupling detection module.
Preferably, the LS band frequency conversion module includes a sixth filter, a seventh filter, a fourth amplifier and a third coupling detection module, and after the signals of 13 to 18G are filtered by the sixth filter, the signals are down-converted in the LS local oscillator, and then sequentially pass through the seventh filter, the fourth amplifier and the third coupling detection module, and are output.
Has the advantages that: the utility model discloses a complicated radar signal simulator has following a bit:
1. Most of the current radar signal patterns can be simulated;
2. 8 kinds of radar signals can be simulated simultaneously, wherein two kinds of radar signals are of any system, and 6 kinds of radar signals are of a conventional system;
3. Convenient operation, display of a panel window menu and operation mode of a touch screen.
drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a schematic diagram of a Ku band source plug-in system.
Fig. 3 is a schematic diagram of an X-band frequency conversion module system.
Fig. 4 is a schematic diagram of a C-band frequency conversion module system.
Fig. 5 is a schematic diagram of an LS band frequency conversion module system.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a complex radar signal simulator, including control module 1, KU wave band source plug-in 7, X wave band frequency conversion module 6, C wave band frequency conversion module 5 and LS wave band frequency conversion module 4, control module 1 is connected with KU wave band source plug-in 7, X wave band frequency conversion module 6, C wave band frequency conversion module 5 and LS wave band frequency conversion module 4 respectively through serial bus, KU wave band source plug-in 7, X wave band frequency conversion module 6, C wave band frequency conversion module 5 are connected with one joint of three-in-one switch respectively, three-in-one switch is connected with 0.3-6Ghz wave band power amplifier 22, LS wave band frequency conversion module 4 is connected with 0.3-6Ghz wave band power amplifier, KU wave band source plug-in 7 is connected with X wave band frequency conversion module 6 LS, C wave band frequency conversion module 5 and wave band frequency conversion module 4 respectively; the control module 1 is also connected with a display and a keyboard respectively.
The utility model discloses in, KU wave band source plug-in components 7 contain the control unit 71, 3.8G frequency conversion module 74, Ku local oscillator 72 and Ku frequency conversion module 73, the control unit 71 is connected with 3.8G frequency conversion module 74 and Ku local oscillator 72 respectively, and Ku frequency conversion module 73 is connected with Ku local oscillator 72 and 3.8G frequency conversion module 74 respectively, the control unit 71 comprises FPGA and DDS, and FPGA is connected with DDS, first wave filter, first amplifier in proper order, and first amplifier is connected with the output.
The utility model discloses in, X wave band frequency conversion module 6 contains second wave filter 61, third wave filter 62, second amplifier 63 and first coupling detection 64 module, and 13-18G's signal is through second wave filter 61 after filtering, and in the down-conversion of X local oscillator, exports after third wave filter 62, second amplifier 63 and first coupling detection 64 module in proper order.
The utility model discloses in, C wave band frequency conversion module 5 contains fourth wave filter, fifth wave filter, third amplifier and second coupling detection module, and 13-18G's signal is through the fourth wave filter after, in C local oscillator down-conversion, exports after fifth wave filter, third amplifier and second coupling detection module in proper order.
The utility model discloses in, LS wave band frequency conversion module 4 contains sixth wave filter, seventh wave filter, fourth amplifier and third coupling detection module, and 13-18G's signal is through the sixth wave filter after, in LS local oscillator down-conversion, exports after seventh wave filter, fourth amplifier and third coupling detection module in proper order.
The utility model discloses in, inside demonstration and control, broadband excitation source, power amplifier plug-in components and the power plug-in components of mainly containing of this radar signal analog system. Broadband excitation source: the radar frequency signals of different systems within the range of 0.38-18G are generated, and monopulse single carrier frequency, frequency agility, multiple frequency spread, multiple frequency jitter, frequency diversity, continuous wave and the like can be generated, and various modulation modes, such as linear frequency modulation, nonlinear frequency modulation, two-phase code modulation, four-phase code modulation and simulated antenna scanning, can be realized. A power conversion unit: the mains AC220V is transformed into the voltage required by the subsystems. Displaying and controlling: and inputting a user instruction through a keyboard, and displaying the working state.
The utility model discloses in, total eight KU wave band source plug-in components 7, wherein have two identical KU wave band source plug-in components 7, can produce various complicated radar signal, other six can only produce single pulse modulation and continuous wave signal. The radar signal simulation unit comprises a radar signal source, a frequency conversion module, a broadband power amplifier and the like, wherein the radar signal source expands signals to a full frequency band through frequency conversion, the signals are output after being filtered and amplified by the broadband power amplifier, and the output end of the radar signal simulation unit is added with coupling detection for system self-checking.
The utility model discloses in, KU wave band source plug-in components 7 mainly comprise control module 1, 3.8G frequency conversion module 74, Ku local oscillator 72 module and Ku frequency conversion module 73. The control module 1 consists of an FPGA and a DDS, the FPGA is responsible for controlling the whole module and communicating with an upper computer, analyzes commands of the upper computer briefly and controls the DDS to generate intermediate frequency signals carrying various radar signals and modulation waveforms. The 3.8G frequency conversion module 74 is composed of amplification, filtering, frequency conversion, modulation, numerical control attenuation and the like, and after the complex radar intermediate frequency signal generated by the control module 1 is filtered, the complex radar intermediate frequency signal is converted into a 3.8G signal by frequency conversion with a 4.8G local oscillator generated by a clock circuit, and then the complex radar intermediate frequency signal is filtered and amplified and is sent to a pulse modulator and a numerical control attenuator to realize the adjustment of output power and the generation of modulation waveforms. The Ku local oscillator 72 is composed of a VCO, a frequency multiplier, a phase frequency detector, a frequency divider, a filter, an amplifier and the like. In order to ensure the phase noise requirement of the whole system, the local oscillator part adopts a low-phase-noise phase frequency detector and a high frequency discrimination frequency. In order to ensure the stepping frequency of 1MHz, DDS is selected as a fractional frequency divider, thereby not only meeting the frequency stepping requirement of small resolution, but also not losing the phase noise of the system. One part of the VCO output is used as a Ku local oscillator 72 to be output after 2-time frequency multiplication and filtering amplification, the other part of the VCO output is used as a clock of a DDS through frequency division, and the VCO is locked with a 100M reference clock frequency discrimination phase discrimination through decimal frequency division of the DDS. The required local oscillation frequency output can be realized by controlling the frequency division coefficient of the DDS. The Ku frequency conversion part mainly generates a Ku excitation source containing various radar signals; the power divider mainly comprises a power divider, an amplifier, a filter, a frequency mixer, an isolator and the like. After filtering and amplifying the complex radar intermediate frequency signal output by the 3.8G frequency conversion module 74, the complex radar intermediate frequency signal is subjected to frequency conversion with a Ku local oscillator 72 in a frequency mixer, a filter is used for selecting a required 12.5-18G useful signal, and the useful signal is amplified to a proper level and output as a Ku excitation source. The system has 8 Ku excitation source modules, the Ku excitation source modules 1 and 2 can generate various complex radar analog signals and modulation waveforms, the Ku excitation source modules 3 to 8 can only generate single-carrier radar signals, and meanwhile, the Ku excitation source modules 6, 7 and 8 can also be used for generating diversity radar signals. In order to realize that 8 paths of radar signals can work simultaneously, a combiner is adopted to combine signals of 8 Ku excitation source modules into one path and output the path, the path is divided into 4 paths, one path is amplified to be used as a radar signal of a 12.5-18G frequency band and output to a power amplifier, and the other three paths are sent to a rear frequency conversion part to generate the radar signal of the 0.38-12.5G frequency band. In order to enable signals to cover the range of 0.38-18G, the signals are realized through frequency conversion, 13-18G signals output by a Ku excitation source are converted to 8-12.5 GHz of an X frequency band, 4-8 GHz of a C frequency band and 0.38-4 GHz of an LS frequency band respectively, and finally the signals and Ku frequency band 12.5-18G signals output by a combined power dividing module are combined into a 0.38-18G broadband through switching and time sharing. The frequency conversion module mainly comprises an X wave band frequency conversion module 6, a C wave band frequency conversion module 5, an LS wave band frequency conversion module 4 and the like.
The utility model discloses in, X wave band frequency conversion module 6 mainly is the radar signal who generates the X wave band, contains synthetic 8 way Ku excitation source signals and X local oscillator down frequency conversion, generates 8 ~ 10GHz and 10 ~ 12.5GHz signals respectively, closes the way output after filtering enlargies. The internal part of the device consists of a filter, an amplifier, a mixer, a VCO, a phase frequency detector, a frequency divider, a frequency multiplier and the like.
The utility model discloses in, C wave band frequency conversion module 5 mainly is the radar signal who generates the C wave band, contains synthetic 8 way Ku excitation source signals and C local oscillator down conversion, generates 4 ~ 6GHz and 6 ~ 8GHz signal respectively, exports after the switch over after filtering enlargies. The internal part of the device consists of a filter, an amplifier, a mixer, a VCO, a phase frequency detector, a frequency divider, a frequency multiplier and the like. The LS wave band frequency conversion module 4 mainly generates radar signals of 0.38-4 GHz wave bands, comprises synthesized 8 paths of Ku excitation source signals and LS local oscillator down-conversion, respectively generates 0.38-2 GHz and 2-4 GHz signals, and outputs the signals after filtering and amplification through switching. The internal part of the device consists of a filter, an amplifier, a mixer, a VCO, a phase frequency detector, a frequency divider, a frequency multiplier and the like.
The utility model discloses in, the power amplifier part is responsible for the enlargies of whole analog system output signal power, divides two frequency channels altogether, and the low band covers 0.38 ~ 6GHz, and the high band covers 6 ~ 18 GHz. The internal part of the power amplifier consists of power division coupling, a switch, detection, a driving stage, a final-stage power amplifier and the like. The input signal is divided into two paths after power division/coupling, one path is used as auxiliary output-detection output and is connected to the rear panel of the case to be used for monitoring radar signals. The other path is taken as main output and is sent to a driving stage of the power amplifier, the main output is sent to a single-pole double-throw switch after power amplification of a final stage, the control switch is taken as output on-off control of radar signals, and the self-checking test of the working state of the power amplifier is also taken when the power amplifier is started.
the utility model discloses in, clock circuit is responsible for the basic clock of whole module, and the constant temperature crystal oscillator of making an uproar passes through various frequency conversions such as doubling of frequency, frequency conversion by the low looks of high stability, provides different clock reference and synchro control for each module of system. The system needs 7 clock signals in total, 16 paths of 100MHz clock signals are needed for Ku local oscillator 72 and intermediate frequency control, 400MHz clock signals are needed for C frequency conversion local oscillator, 500MHz clock signals are needed for LS frequency conversion local oscillator and X frequency conversion local oscillator, 1150MHz clock signals are needed for X frequency conversion local oscillator, and 3600MHz and 4800MHz signals are needed for Ku excitation source module I and Ku excitation source module II.
In the present invention, the display and control unit 71 is composed of hardware such as a central processing unit, a 12-inch color liquid crystal display unit, a touch screen circuit, a keyboard/mouse, and a serial communication interface. And in the window type user interface, a user inputs system working parameters through a touch screen or a keyboard/mouse, the working parameters are processed and calculated and then are sent to all the extension sets through a serial data port bus, and the current working state is displayed by the liquid crystal display.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (5)
1. A complex radar signal simulator, characterized by: the control module is respectively connected with the Ku waveband source plug-in, the X waveband frequency conversion module, the C waveband frequency conversion module and the LS waveband frequency conversion module through serial buses, the Ku waveband source plug-in, the X waveband frequency conversion module and the C waveband frequency conversion module are respectively connected with one connector of a three-out-of-one switch, the three-out-of-one switch is connected with a 6-18Ghz waveband power amplifier, the LS waveband frequency conversion module is connected with a 0.3-6Ghz waveband power amplifier, and the Ku waveband source plug-in is respectively connected with the X waveband frequency conversion module, the C waveband frequency conversion module and the LS waveband frequency conversion module; the control module is also connected with the display and the keyboard respectively.
2. The complex radar signal simulator of claim 1, wherein: the Ku waveband source plug-in comprises a control unit, a 3.8G frequency conversion module, a Ku local oscillator and a Ku frequency conversion module, wherein the control unit is respectively connected with the 3.8G frequency conversion module and the Ku local oscillator, the Ku frequency conversion module is respectively connected with the Ku local oscillator and the 3.8G frequency conversion module, the control unit comprises an FPGA and a DDS, the FPGA is sequentially connected with the DDS, a first filter and a first amplifier, and the first amplifier is connected with an output end.
3. The complex radar signal simulator of claim 1, wherein: the X-band frequency conversion module comprises a second filter, a third filter, a second amplifier and a first coupling detection module, and after being filtered by the second filter, signals of 13-18G are down-converted in an X local oscillator and output after sequentially passing through the third filter, the second amplifier and the first coupling detection module.
4. The complex radar signal simulator of claim 1, wherein: the C-band frequency conversion module comprises a fourth filter, a fifth filter, a third amplifier and a second coupling detection module, and after being filtered by the fourth filter, signals of 13-18G are down-converted in a C local oscillator and output after sequentially passing through the fifth filter, the third amplifier and the second coupling detection module.
5. The complex radar signal simulator of claim 1, wherein: the LS wave band frequency conversion module comprises a sixth filter, a seventh filter, a fourth amplifier and a third coupling detection module, and after being filtered by the sixth filter, signals of 13-18G are down-converted in the LS local oscillator and output after sequentially passing through the seventh filter, the fourth amplifier and the third coupling detection module.
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| CN201920233117.2U CN209765036U (en) | 2019-02-25 | 2019-02-25 | Complex radar signal simulator |
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| CN201920233117.2U CN209765036U (en) | 2019-02-25 | 2019-02-25 | Complex radar signal simulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650568A (en) * | 2020-05-12 | 2020-09-11 | 扬州海科电子科技有限公司 | Radar simulator device based on unmanned aerial vehicle |
| CN111664740A (en) * | 2020-05-28 | 2020-09-15 | 中国人民解放军32181部队 | Passive microwave communication adapter and system |
-
2019
- 2019-02-25 CN CN201920233117.2U patent/CN209765036U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650568A (en) * | 2020-05-12 | 2020-09-11 | 扬州海科电子科技有限公司 | Radar simulator device based on unmanned aerial vehicle |
| CN111664740A (en) * | 2020-05-28 | 2020-09-15 | 中国人民解放军32181部队 | Passive microwave communication adapter and system |
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