CN218824671U - Narrow pulse Doppler radar signal simulator - Google Patents
Narrow pulse Doppler radar signal simulator Download PDFInfo
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- CN218824671U CN218824671U CN202223044522.0U CN202223044522U CN218824671U CN 218824671 U CN218824671 U CN 218824671U CN 202223044522 U CN202223044522 U CN 202223044522U CN 218824671 U CN218824671 U CN 218824671U
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Abstract
The utility model discloses a narrow pulse Doppler radar signal simulator, which comprises a signal simulator body, wherein the signal simulator body comprises a reference source module, a frequency synthesizer module, a pulse modulation module and a mixer module, and the signal simulator body is connected with a signal generator; the signal generator is connected with the reference source module, the signal generator is connected with the frequency mixer module, the reference source module is connected with the frequency synthesizer module, the frequency synthesizer module is connected with the pulse modulation module, and the pulse modulation module is connected with the frequency mixer module; the utility model discloses well signal simulator body and signal generation are supporting to be used the intermediate frequency signal who obtains the intermediate frequency P wave band, produce a pulse width < 6ns and rise along and fall along the narrow pulse signal who < 2ns to make intermediate frequency signal have the coherence, make things convenient for the development debugging of radar main processing board, adopt the modularized design, improve technical maturity, shorten product development cycle, improve the development debugging efficiency of radar main processing board.
Description
Technical Field
The utility model belongs to the technical field of the radar signal, concretely relates to narrow pulse doppler radar signal simulator.
Background
Radars, which are electronic devices that detect objects using electromagnetic waves, find the objects by finding the objects and measure their spatial positions using radio, are also called "radio positioning", and emit electromagnetic waves to irradiate the objects and receive their echoes, thereby obtaining information on the distance, rate of change of distance, azimuth, altitude, and the like from the objects to the point where the electromagnetic waves are emitted.
In the development process of the radar, the debugging of the main processing board occupies a large workload, when the main processing board is debugged in the conventional radar development, a signal generator is used alone, a narrow pulse signal with the pulse width less than 6ns cannot be generated, and the rising edge and the falling edge of the pulse signal generated by the signal generator are large, so that the signal generator is not suitable for the development and debugging of the radar main processing board, the development and debugging efficiency of the radar main processing board is reduced, the development and debugging period is prolonged, and the narrow pulse Doppler radar signal simulator is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a narrow pulse doppler radar signal simulator to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a narrow pulse Doppler radar signal simulator comprises a signal simulator body, wherein the signal simulator body comprises a reference source module, a frequency synthesizer module, a pulse modulation module and a mixer module, and is connected with a signal generator;
a 10M synchronous signal output end of the signal generator is connected with the reference source module, an X-waveband local oscillation signal output end of the signal generator is connected with the frequency mixer module, the reference source module is connected with the frequency synthesizer module, the frequency synthesizer module is connected with the pulse modulation module, and the pulse modulation module is connected with the frequency mixer module;
the 100M reference signal output end of the reference source module is connected with a radar main processing board, the P wave band intermediate frequency output end of the frequency mixer module is connected with the A/D end of the radar main processing board, and the control signal input end of the pulse modulation module is connected with the pulse signal control output end of the radar main processing board.
Preferably, the reference source module includes a phase detector, a 100M crystal oscillator, and a power divider;
the 10M synchronizing signal output end of the signal generator is connected with the phase detector, the phase detector is connected with the 100M crystal oscillator, the 100M crystal oscillator is connected with the power divider, and the 100M reference signal output end of the power divider is connected with the radar main processing board.
Preferably, a 10M synchronization signal input interface is arranged on the signal simulator body, the 10M synchronization signal input interface is connected with the phase discriminator in the reference source module, and a 10M synchronization signal output end of the signal generator is connected with the reference source module through the 10M synchronization signal input interface.
Preferably, the signal simulator body is further provided with a 100M reference signal output interface, the 100M reference signal output interface is connected to the power divider in the reference source module, and the radar main processing board is connected to the reference source module through the 100M reference signal output interface.
Preferably, an X-band local oscillation signal input interface is further arranged on the signal simulator body, the X-band local oscillation signal input interface is connected with the frequency mixer module, and an X-band local oscillation signal output end of the signal generator is connected with the frequency mixer module through the X-band local oscillation signal input interface.
Preferably, a P-band intermediate frequency output interface is further arranged on the signal simulator body, the P-band intermediate frequency output interface is connected with a P-band intermediate frequency output end of the frequency mixer module, and an a/D end of the radar main processing board is connected with the frequency mixer module through the P-band intermediate frequency output interface.
Preferably, the signal simulator body is further provided with a control signal input interface, the control signal input interface is connected with a control signal input end of the pulse modulation module, and a pulse signal control output end of the radar main processing board is connected with the pulse modulation module through the control signal input interface.
Preferably, the signal simulator body is further provided with a power input interface.
Preferably, the signal generator is a 1465D signal generator.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses well signal simulator body and signal generation are supporting to be used, the signal simulator body produces the narrow pulse modulation signal of an X wave band, signal generator produces the continuous wave local oscillator signal of an X wave band, two signals obtain the intermediate frequency signal of intermediate frequency P wave band through the mixing, produce one kind and rise along with the falling edge < 2 ns's narrow pulse signal, improve the step-by-step of analog signal Doppler frequency change, and make the intermediate frequency signal have the looks coherence, make things convenient for the development and debugging of radar main processing board, adopt the modularized design, improve the technical maturity, shorten the product development cycle, improve the development and debugging efficiency of radar main processing board.
Drawings
Fig. 1 is a schematic diagram of connection of modules according to the present invention;
FIG. 2 is a schematic diagram of the present invention;
fig. 3 is a schematic perspective view of the signal simulator body according to the present invention.
In the figure: 1. a signal simulator body; 101. a 10M synchronous signal input interface; 102. a 100M reference signal output interface; 103. an X-band local oscillation signal input interface; 104. a P-band intermediate frequency output interface; 105. a control signal input interface; 106. a power input interface; 2. a reference source module; 201. a phase discriminator; 202. a 100M crystal oscillator; 203. a power divider; 3. a frequency synthesizer module; 4. a pulse modulation module; 5. a mixer module; 6. a signal generator; 7. and a radar main processing board.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the narrow pulse doppler radar signal simulator provided by the present invention includes a signal simulator body 1, the signal simulator body 1 includes a reference source module 2, a frequency synthesizer module 3, a pulse modulation module 4 and a mixer module 5, the signal simulator body 1 is connected to a signal generator 6, and the signal generator 6 is a 1465D signal generator;
a 10M synchronous signal output end of a signal generator 6 is connected with a reference source module 2, a 10M synchronous signal input interface 101 is arranged on a signal simulator body 1, the 10M synchronous signal input interface 101 is connected with a phase discriminator 201 in the reference source module 2, the 10M synchronous signal output end of the signal generator 6 is connected with the reference source module 2 through the 10M synchronous signal input interface 101, an X-waveband local oscillation signal output end of the signal generator 6 is connected with a mixer module 5, an X-waveband local oscillation signal input interface 103 is also arranged on the signal simulator body 1, the X-waveband local oscillation signal input interface 103 is connected with the mixer module 5, the X-waveband local oscillation signal output end of the signal generator 6 is connected with the mixer module 5 through the X-waveband local oscillation signal input interface 103, the reference source module 2 is connected with a frequency synthesizer module 3, the frequency synthesizer module 3 is connected with a pulse modulation module 4, and the pulse modulation module 4 is connected with the mixer module 5;
the reference source module 2 comprises a phase detector 201, a 100M crystal oscillator 202 and a power divider 203, a 10M synchronous signal output end of a signal generator 6 is connected with the phase detector 201, the phase detector 201 is connected with the 100M crystal oscillator 202, the 100M crystal oscillator 202 is connected with the power divider 203, a 100M reference signal output end of the power divider 203 is connected with a radar main processing board 7, a 100M reference signal output end of the reference source module 2 is connected with the radar main processing board 7, a 100M reference signal output interface 102 is further arranged on the signal simulator body 1, the 100M reference signal output interface 102 is connected with the power divider 203 in the reference source module 2, the radar main processing board 7 is connected with the reference source module 2 through the 100M reference signal output interface 102, a P waveband intermediate frequency output end of the frequency mixer module 5 is connected with an A/D end of the radar main processing board 7, a P waveband intermediate frequency output interface 104 is further arranged on the signal simulator body 1, the P waveband intermediate frequency output interface 104 is connected with a P waveband intermediate frequency output end of the frequency mixer module 5, an A/D end of the radar main processing board 7 is connected with an input end of the pulse modulation signal control module 105, a pulse modulation control signal input end of the pulse modulator control module 1 is further connected with a pulse modulation control signal input end of the pulse modulation control module 105, and a pulse modulation control module 105 of the pulse modulation control module 105, and a pulse control module 105 are arranged on the pulse modulation control module 1, the pulse modulation control module 1;
the utility model is provided with a reference source module 2, a frequency synthesizer module 3, a pulse modulation module 4, a mixer module 5 and a signal generator 6, 10M synchronizing signal output by a 10M synchronizing signal output end of the signal generator 6, a phase discriminator 201 input into the reference source module 2 through a 10M synchronizing signal input interface 101, the phase discriminator 201 generates 100M reference signal by 10M synchronizing signal through a 100M crystal resonator 202, the 100M reference signal passes through a power divider 203, output to a radar main processing board 7 all the way, the other way output provides reference signal for the frequency synthesizer module 3, then the frequency synthesizer module 3 generates X wave band continuous wave signal according to 100 reference signal, then output the X wave band continuous wave signal to the pulse modulation module 4, at this moment, the pulse modulation module 4 receives pulse signal of a radar main processing board 7 to control the X wave band continuous wave signal, and then control grid of an X wave band radio frequency amplifier obtains modulation signal, make rising edge and falling edge of modulation signal < 2ns, then input modulation signal to a frequency mixer module 5, a local oscillation signal of the frequency generator 6 is output end, the local oscillation signal of the local oscillation frequency signal of the frequency mixer module 2, thus the local oscillation frequency signal is changed from the local oscillation frequency signal of the local oscillation frequency divider 202, the local oscillation frequency generator 6, the local oscillation frequency signal of the local oscillation frequency divider 100M frequency signal input end is changed to the frequency, the local oscillation frequency signal of the local oscillation frequency mixer 2, the local oscillation frequency signal of the local oscillation frequency, thereby the local oscillation frequency signal of the local oscillation frequency divider 202, the local oscillation frequency signal of the local oscillation frequency mixer 2, the local oscillation frequency generating frequency, the local oscillation frequency signal of the local oscillation frequency divider 202, the local oscillation frequency is adjusted by the local oscillation frequency, the local oscillation frequency divider 202, the local oscillation frequency, the local oscillation frequency divider module 2, whole radar signal test system all is coherent, and signal simulator body 1 uses with signal generation 6 is supporting, produces a rising edge and falling edge < 2 ns's narrow pulse signal, improves the step-by-step of simulating intermediate frequency signal Doppler frequency variation to make the intermediate frequency signal have the coherence, make things convenient for the development debugging of radar main processing board, adopt the modularized design, improve technical maturity, shorten product development cycle, improve the development debugging efficiency of radar main processing board.
To sum up, the working principle of the narrow pulse doppler radar signal simulator provided by this embodiment is as follows: a 10M synchronous signal output by a 10M synchronous signal output end of the signal generator 6 is input to a phase discriminator 201 in the reference source module 2 through a 10M synchronous signal input interface 101, the phase discriminator 201 generates a 100M reference signal by the 10M synchronous signal through a 100M crystal oscillator 202, the 100M reference signal passes through a power divider 203, one path of the 100M reference signal is output to the radar main processing board 7, the other path of the 100M reference signal is output to the frequency synthesizer module 3 to provide a reference signal, then the frequency synthesizer module 3 generates an X-band continuous wave signal according to the 100 reference signal, then the X-band continuous wave signal is output to the pulse modulation module 4, at this time, the pulse modulation module 4 receives a pulse signal of the radar main processing board 7 to control the X-band continuous wave signal, and further controls a grid of the X-band radio frequency amplifier to obtain a modulation signal, so that a rising edge and a falling edge of the modulation signal are less than 2ns, then, the modulated signal is input to the radio frequency end of the frequency mixer module 5, then the X-band local oscillation signal output end of the signal generator 6 outputs an X-band local oscillation signal to the local oscillation end of the frequency mixer module 5, the frequency of the X-band local oscillation signal is adjusted, so that the X-band local oscillation signal and the modulated signal are mixed, then the P-band intermediate frequency output end of the frequency mixer module 5 mixes a P-band analog intermediate frequency signal, the doppler frequency shift of the analog intermediate frequency signal is changed by adjusting the frequency of the signal generator 6, since the frequency stepping interval of the signal generator 6 is 1HZ, the doppler frequency shift interval of the analog intermediate frequency signal mixed by the frequency mixer module 5 is also 1HZ, then one 100 reference signals of the 100M crystal oscillator 202 is input to the phase discriminator 201, and the whole radar signal testing system is coherent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The narrow-pulse Doppler radar signal simulator is characterized by comprising a signal simulator body (1), wherein the signal simulator body (1) comprises a reference source module (2), a frequency synthesizer module (3), a pulse modulation module (4) and a mixer module (5), and the signal simulator body (1) is connected with a signal generator (6);
a 10M synchronous signal output end of the signal generator (6) is connected with the reference source module (2), an X-waveband local oscillation signal output end of the signal generator (6) is connected with the frequency mixer module (5), the reference source module (2) is connected with the frequency synthesizer module (3), the frequency synthesizer module (3) is connected with the pulse modulation module (4), and the pulse modulation module (4) is connected with the frequency mixer module (5);
the 100M reference signal output end of the reference source module (2) is connected with a radar main processing board (7), the P wave band intermediate frequency output end of the frequency mixer module (5) is connected with the A/D end of the radar main processing board (7), and the control signal input end of the pulse modulation module (4) is connected with the pulse signal control output end of the radar main processing board (7).
2. The narrow pulse doppler radar signal simulator of claim 1, wherein: the reference source module (2) comprises a phase detector (201), a 100M crystal oscillator (202) and a power divider (203);
the 10M synchronizing signal output end of signal generator (6) with phase detector (201) is connected, phase detector (201) with 100M crystal oscillator (202) is connected, 100M crystal oscillator (202) with ware (203) is divided to the merit is connected, the 100M reference signal output end of ware (203) is divided to the merit with radar main processing board (7) are connected.
3. The narrow-pulse doppler radar signal simulator of claim 2, wherein: the signal simulator is characterized in that a 10M synchronous signal input interface (101) is arranged on the signal simulator body (1), the 10M synchronous signal input interface (101) is connected with the phase discriminator (201) in the reference source module (2), and a 10M synchronous signal output end of the signal generator (6) is connected with the reference source module (2) through the 10M synchronous signal input interface (101).
4. The narrow-pulse doppler radar signal simulator of claim 2, wherein: the signal simulator body (1) is further provided with a 100M reference signal output interface (102), the 100M reference signal output interface (102) is connected with the power divider (203) in the reference source module (2), and the radar main processing board (7) is connected with the reference source module (2) through the 100M reference signal output interface (102).
5. The narrow pulse doppler radar signal simulator of claim 1, wherein: the signal simulator comprises a signal simulator body (1), and is characterized in that an X-waveband local oscillation signal input interface (103) is further arranged on the signal simulator body (1), the X-waveband local oscillation signal input interface (103) is connected with a frequency mixer module (5), and an X-waveband local oscillation signal output end of a signal generator (6) is connected with the frequency mixer module (5) through the X-waveband local oscillation signal input interface (103).
6. The narrow-pulse doppler radar signal simulator of claim 1, wherein: still be provided with P wave band intermediate frequency output interface (104) on signal simulator body (1), P wave band intermediate frequency output interface (104) with the P wave band intermediate frequency output of mixer module (5) is connected, the AD end of radar main processing board (7) passes through P wave band intermediate frequency output interface (104) with mixer module (5) are connected.
7. The narrow-pulse doppler radar signal simulator of claim 1, wherein: still be provided with control signal input interface (105) on signal simulator body (1), control signal input interface (105) with the control signal input of pulse modulation module (4) is connected, the pulse signal control output of radar main processing board (7) passes through control signal input interface (105) with pulse modulation module (4) are connected.
8. The narrow-pulse doppler radar signal simulator of claim 1, wherein: the signal simulator body (1) is also provided with a power input interface (106).
9. The narrow pulse doppler radar signal simulator of claim 1, wherein: the signal generator (6) is a 1465D signal generator.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117111045A (en) * | 2023-10-25 | 2023-11-24 | 成都量芯集成科技有限公司 | Signal generator for phase type laser measurement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117111045A (en) * | 2023-10-25 | 2023-11-24 | 成都量芯集成科技有限公司 | Signal generator for phase type laser measurement |
| CN117111045B (en) * | 2023-10-25 | 2023-12-29 | 成都量芯集成科技有限公司 | Signal generator for phase type laser measurement |
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