CN110187311A - Radar parameter configuration method, frequency source and radar system - Google Patents
Radar parameter configuration method, frequency source and radar system Download PDFInfo
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- CN110187311A CN110187311A CN201910406977.6A CN201910406977A CN110187311A CN 110187311 A CN110187311 A CN 110187311A CN 201910406977 A CN201910406977 A CN 201910406977A CN 110187311 A CN110187311 A CN 110187311A
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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Abstract
The application provides radar parameter configuration method, frequency source and radar system, frequency source includes clock circuit, digital control circuit, signal generating circuit and mixting circuit, which kind of mode frequency source work in the case where in uncertain radar system, radar parameter can be parsed according to communication protocol to obtain different types of discrete radar parameter, and different types of discrete radar parameter is respectively configured frequency source, the different types of discrete radar parameter of response configuration can produce corresponding multi-signal form, flexibly obtain the signal that radar system requires, to improve the utilization rate of radar system.
Description
Technical field
This application involves radar signal source technical field, more particularly to a kind of radar parameter configuration method, frequency source with
And radar system.
Background technique
Frequency source is also known as frequency synthesizer, is the core of the electronic systems such as radar, communication, electronic countermeasure, measuring instrument
Component, performance superiority and inferiority directly influence the overall performance of entire electronic system.
Multiple-working mode is had in radar system, and operating mode is usually informed that frequency source, frequency source produce by agreement
The raw signal form accordingly fixed.But traditional radar system is only capable of generating the radar information of fixed format according to agreement, and
It is unable to flexible configuration radar parameter, to reduce the utilization rate of radar system.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, provide a kind of signal raising system that can flexibly generate requirement
Method for parameter configuration, frequency source and the radar system of utilization rate.
The embodiment of the present application provides a kind of radar parameter configuration method, which comprises
Communication protocol is received by the frequency source of radar system；
The radar parameter in the communication protocol is parsed, Direct Digital Synthesizer configuration parameter and local oscillator are obtained
Reference circuit configuration parameter；
The Direct Digital Synthesizer configuration parameter is configured to Direct Digital Synthesizer, by described
Vibration reference circuit configuration parameter is configured to local oscillator reference circuit.
Radar parameter in the parsing communication protocol in one of the embodiments, obtains Direct Digital frequency
Rate synthesizer configuration parameter and local oscillator reference circuit configuration parameter, comprising:
Judge whether the radar parameter parsed from the communication protocol meets the default work of radar system
Condition；
If the radar parameter meets the preset operating conditions of the radar system, type is carried out to the radar parameter
Conversion, obtains Direct Digital Synthesizer configuration parameter and local oscillator reference circuit configuration parameter.
Judging whether the radar parameter parsed from the communication protocol accords in one of the embodiments,
After the preset operating conditions for closing radar system, the method also includes:
If the radar parameter does not meet the preset operating conditions of the radar system, the radar parameter is not stored.
The radar parameter includes: repetition period, frequency-modulated form, subpulse number, difference in one of the embodiments,
At least one of subpulse bandwidth, pulsewidth and frequency point parameter.
It is described in one of the embodiments, that type conversion is carried out to the radar parameter, obtain Direct Digital frequency
Synthesizer configuration parameter and local oscillator reference circuit configuration parameter, comprising:
The frequency point is subjected to type conversion, obtains the local oscillator reference circuit configuration parameter；
By the frequency-modulated form, the subpulse number, the different subpulse bandwidth, pulsewidth and in the period extremely
Few two kinds of parameters carry out type conversion, obtain the Direct Digital Synthesizer configuration parameter.
The embodiment of the present application provides a kind of frequency source, and the frequency source includes: clock circuit, digital control circuit, signal
Generation circuit and mixting circuit, it is the first input end of the output end of the clock circuit and the digital control circuit, described
The first input end of the first input end of signal generating circuit and the mixting circuit connection, the digital control circuit it is defeated
Outlet is connect with the second input terminal of the signal generating circuit, the output end of the signal generating circuit and the mixting circuit
The second input terminal connection；
Wherein, the clock circuit is used for the digital control circuit, the signal generating circuit and the mixing
Circuit provides clock signal；
The digital control circuit is for receiving radar parameter and the clock signal, based on the clock signal to institute
It states radar parameter to be parsed, obtains signal generating circuit configuration parameter, and the signal generating circuit configuration parameter is matched
It sets in the signal generating circuit；
The signal generating circuit is used to generate corresponding different letters according to the clock signal and the configuration parameter
Number；
The mixting circuit is used to carry out the unlike signal that the signal generating circuit generates according to the clock signal
Frequency mixing processing obtains mixed frequency signal and exports.
The frequency source further includes isolation resistance in one of the embodiments, the output end of the isolation resistance and institute
State the second input terminal connection of digital control circuit.
The signal generating circuit includes Direct Digital Synthesizer and local oscillator base in one of the embodiments,
Quasi- circuit；
The Direct Digital Synthesizer is used for according to the clock signal received, response Direct Digital frequency
Rate synthesizer configuration parameter generates FM signal；
The local oscillator reference circuit is used for according to the clock signal and local oscillator reference circuit configuration parameter received
Frequency handover is carried out, point-frequency signal is generated.
The mixting circuit includes: radio frequency reference sub-circuit and frequency mixer, the radio frequency in one of the embodiments,
The output end of benchmark sub-circuit is connect with the input terminal of the frequency source；
The radio frequency reference sub-circuit is used to generate radio frequency reference signal according to the clock signal received；
Multiple frequency mixers are used to respectively believe the FM signal and the point-frequency signal with the radio frequency reference
Number carry out Frequency mixing processing, obtain the mixed frequency signal and export.
The frequency mixer includes the first frequency mixer and the second frequency mixer in one of the embodiments, and described first is mixed
The input terminal of frequency device is connect with the output end of the radio frequency reference sub-circuit, the input terminal and the radio frequency of second frequency mixer
The output end of benchmark sub-circuit connects；
First frequency mixer is used to the FM signal and the radio frequency reference signal carrying out Frequency mixing processing, obtains institute
It states pumping signal and exports；
Second frequency mixer is used to the point-frequency signal and the radio frequency reference signal carrying out Frequency mixing processing, obtains institute
It states local oscillation signal and exports.
The embodiment of the present application provides a kind of radar system, and the radar system includes frequency as described in any one of the above embodiments
Source and agreement play dot circuit；The input terminal of output end and isolation resistance that the agreement plays dot circuit connects, the isolation electricity
The output end of resistance is connect with the input terminal of the frequency source.
The agreement plays dot circuit and is used to issue communication protocol to the frequency source in one of the embodiments,.
Radar parameter configuration method, frequency source and radar system provided in this embodiment, frequency source is in uncertain radar
System work can parse radar parameter according to communication protocol to obtain different discrete thunders in the case where which kind of mode
Up to parameter, and different discrete radar parameters is distinguished flexible configuration by frequency source, and response configuration parameter can produce accordingly
Multi-signal form flexibly obtains the signal that radar system requires, to improve the utilization rate of radar system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the radar system that one embodiment of the application provides；
Fig. 2 is the flow diagram for the radar parameter configuration method that another embodiment of the application provides；
Fig. 3 is the structural schematic diagram for the frequency source that another embodiment of the application provides；
Fig. 4 is the concrete structure schematic diagram for the frequency source that one embodiment of the application provides；
Fig. 5 be the reference clock signal waveform that clock circuit provides in the frequency source that provides respectively of one embodiment of the application,
The first excitation signal waveforms schematic diagram that the repetition period signal waveform and frequency source that frequency source receives generate；
Fig. 6 is second of excitation signal waveforms schematic diagram that the frequency source that another embodiment of the application provides generates；
Fig. 7 is the third excitation signal waveforms schematic diagram that the frequency source that another embodiment of the application provides generates；
Fig. 8 is the 4th kind of excitation signal waveforms schematic diagram that the frequency source that another embodiment of the application provides generates；
Fig. 9 is the 5th kind of excitation signal waveforms schematic diagram that the frequency source that another embodiment of the application provides generates；
Figure 10 is the 6th kind of excitation signal waveforms schematic diagram that the frequency source that another embodiment of the application provides generates；
Figure 11 is the 7th kind of excitation signal waveforms schematic diagram that the frequency source that another embodiment of the application provides generates；
Figure 12 is the 8th kind of excitation signal waveforms schematic diagram that the frequency source that another embodiment of the application provides generates；
Figure 13 is a kind of correction signal waveform diagram that the frequency source that another embodiment of the application provides generates；
Another reference clock letter that clock circuit provides in the frequency source that Figure 14 is provided respectively for one embodiment of the application
The time delayed signal waveform and frequency that another repetition period signal waveform that number waveform, frequency source receive, frequency source receive
Another excitation signal waveforms schematic diagram that rate source generates.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall in the protection scope of this application.
Radar parameter configuration method provided in this embodiment, can be adapted in frequency source and radar system, frequency source
And the structure of radar system is as shown in Figure 1.The frequency source can be the core component in radar system.It should be noted that
Radar parameter configuration method provided by the embodiments of the present application, executing subject can be frequency source, which can be by soft
The mode of part, hardware or software and hardware combining is implemented as the part of radar system.The executing subject of following methods embodiment with
It is illustrated for frequency source.
In order to which the objects, technical solutions and advantages of the application are more clearly understood, pass through following embodiments and combine attached
Figure, the further description of technical solutions in the embodiments of the present application.It should be appreciated that specific embodiment described herein
Only to explain the application, it is not used to limit invention.
Fig. 2 is the flow diagram for the radar parameter configuration method that an embodiment provides.The present embodiment what is involved is how
The process that radar parameter is configured.As shown in Fig. 2, this method comprises:
S101, communication protocol is received by the frequency source of radar system.
Specifically, the frequency source in radar system, which can receive agreement in radar system, plays the communication protocols that dot circuit issues
View.
It should be noted that learning that communication protocol may include serial communication according to the preset operating conditions of radar system
(Serial Peripheral Interface, SPI) agreement and asynchronous, full duplex serial communication (Universal
At least one of Asynchronous Receiver Transmitter, UART) agreement etc..
Radar parameter in S102, the parsing communication protocol, obtain Direct Digital Synthesizer configuration parameter with
And local oscillator reference circuit configuration parameter.
Specifically, the radar parameter in the communication protocol that the frequency source resolution in radar system receives, is directly counted
Word formula frequency synthesizer configuration parameter and local oscillator reference circuit configuration parameter.Optionally, the radar parameter may include frequency
At least one of parameters such as point, repetition period, subpulse number, subpulse period, pulse width and modulating bandwidth.
S103, the Direct Digital Synthesizer configuration parameter is configured to Direct Digital Synthesizer, it will
The local oscillator reference circuit configuration parameter configuration is to local oscillator reference circuit.
Specifically, the frequency source in radar system can be according to the preset operating conditions of radar system, by Direct Digital
Frequency synthesizer configuration parameter is configured to Direct Digital Synthesizer, by local oscillator reference circuit configuration parameter configuration to local oscillator
Reference circuit, further, Direct Digital Synthesizer can also respond Direct Digital Synthesizer configuration parameter,
And frequency synthesis processing is carried out to configuration parameter, corresponding signal is obtained, local oscillator reference circuit can also respond local oscillator reference electricity
Road configuration parameter carries out frequency handover processing to configuration parameter, obtains corresponding signal, and then flexibly obtains default work item
The required signal of radar system under part.
Radar parameter configuration method provided in this embodiment, this method parse radar parameter by communication protocol, obtain not
Same configuration parameter, and different configuration parameter flexible configuration to Direct Digital Synthesizer and local oscillator reference is electric
Road, progress can flexibly obtain the required signal of radar system under preset operating conditions, improve the usability of system；Separately
Outside, this method may be implemented flexibly to debug radar system by flexible configuration radar parameter, and during system debug, energy
Enough cooperations are used as simulation signal generator.
The radar parameter configuration method that another embodiment provides parses the radar ginseng in the communication protocol in above-mentioned S102
The step of counting, obtaining Direct Digital Synthesizer configuration parameter and local oscillator reference circuit configuration parameter, specifically can wrap
It includes:
S1021, judge whether the radar parameter parsed from the communication protocol meets the pre- of radar system
If operating condition.
Specifically, frequency source may determine that whether the radar parameter parsed from communication protocol meets radar system
Preset operating conditions.Wherein, the preset operating conditions of radar system may include radar parameter information.
If S1022, the radar parameter meet the preset operating conditions of the radar system, to the radar parameter into
The conversion of row type, obtains Direct Digital Synthesizer configuration parameter and local oscillator reference circuit configuration parameter.
It should be noted that when the radar parameter that frequency source receives is that radar system is required under preset operating conditions
When the radar parameter of consideration, then it can store the radar parameter, for using in subsequent processes.Meanwhile the radar is joined
Number carries out type conversion, obtains corresponding configuration parameter.Wherein, configuration parameter may include: repetition period, frequency-modulated form, son
At least one of pulse number, different subpulse bandwidth, pulsewidth and frequency point parameter.
In the present embodiment, frequency source can carry out type conversion to radar parameter according to communication protocol, by radar parameter
The parameter type that Direct Digital Synthesizer and the local oscillator reference circuit being converted into frequency source can configure.
Optionally, judge whether the radar parameter meets radar system according to the communication protocol in above-mentioned S1021
After the step of preset operating conditions, the method also includes: if the radar parameter does not meet the default of the radar system
Operating condition does not store the radar parameter then.
It should be noted that the frequency source in radar system can parse multiple radar parameters in communication protocol, wherein
Part radar parameter may not meet the parameter of radar system required consideration under preset operating conditions, at this point it is possible to be not required to
Parameter configuration processing is carried out to the part radar parameter, which terminates configuration flow, at this point, frequency source only needs
Configuration processing is carried out to satisfactory configuration parameter.
Radar parameter configuration method provided in this embodiment, this method judge the institute parsed from the communication protocol
The preset operating conditions whether radar parameter meets radar system are stated, the radar parameter of radar system preset operating conditions will be met
Storage, continues configuration processing, carries out type conversion to radar parameter, obtains Direct Digital Synthesizer configuration parameter
And local oscillator reference circuit configuration parameter, and Direct Digital Synthesizer and local oscillator base is respectively configured in configuration parameter
Quasi- circuit, so that Direct Digital Synthesizer and local oscillator reference circuit can flexibly obtain systemic presupposition operating condition
Under required signal, improve the usability of system；In addition, this method may be implemented flexibly by flexible configuration radar parameter
Radar system is debugged, and during system debug, can be cooperated as simulation signal generator.
The radar parameter configuration method that another embodiment provides carries out type to the radar parameter in above-mentioned S1022 and turns
The step of changing, obtaining Direct Digital Synthesizer configuration parameter and local oscillator reference circuit configuration parameter, can specifically lead to
Cross following manner realization:
S1022a, the frequency point is subjected to type conversion, obtains the local oscillator reference circuit configuration parameter.
Specifically, frequency point only can be carried out type conversion according to the preset operating conditions of radar system, obtain local oscillator reference
Circuit configuration parameter, and then by local oscillator reference circuit configuration parameter configuration to local oscillator reference circuit.For example, current radar parameter is
The No.1 frequency point is converted to specific frequency by No.1 frequency point, frequency source, and then by the specific frequency by calculating and turning
It changes processing and is configured to local oscillator reference circuit.
S1022b, by the frequency-modulated form, the subpulse number, the different subpulse bandwidth, pulsewidth and again
At least two parameters in multiple period, frequency point carry out type conversion, obtain the Direct Digital Synthesizer configuration parameter.
It should be noted that according to the preset operating conditions of radar system, it can be by least two in all radar parameters
Kind of parameter carries out type conversion, obtains Direct Digital Synthesizer configuration parameter, and then by direct digital frequency synthesier
Device configuration parameter is configured to Direct Digital Synthesizer.
Radar parameter can be parsed to obtain different by radar parameter configuration method provided in this embodiment, this method
Configuration parameter, and by different configuration parameter flexible configuration to Direct Digital Synthesizer and local oscillator reference circuit,
Direct Digital Synthesizer and local oscillator reference circuit, carrying out response to the configuration parameter received respectively can produce phase
The signal answered improves making for system so as to flexibly obtain required signal under radar system preset operating conditions
The property used；In addition, this method may be implemented flexibly to debug radar system by flexible configuration radar parameter, and in system debug
Cheng Zhong can cooperate as simulation signal generator.
Fig. 3 is a kind of structural schematic diagram for frequency source 10 that another embodiment provides, as shown in figure 3, the frequency source 10
It include: clock circuit 11, digital control circuit 12, signal generating circuit 13 and mixting circuit 14, the clock circuit 11
Output end and the first input end of the digital control circuit 12, the first input end of the signal generating circuit 13 and described
The first input end of mixting circuit 14 connects, and the of the output end of the digital control circuit 12 and the signal generating circuit 13
The connection of two input terminals, the output end of the signal generating circuit 13 are connect with the second input terminal of the mixting circuit 14.
Wherein, the clock circuit 11 is used for the digital control circuit 12, the signal generating circuit 13 and institute
It states mixting circuit 14 and clock signal is provided；The digital control circuit 12 is used to receive communication protocol and the clock signal,
The radar parameter in the communication protocol is parsed based on the clock signal, obtains signal generating circuit configuration parameter, and will
The signal generating circuit configuration parameter is configured in the signal generating circuit 13；The signal generating circuit 13 is used for basis
The clock signal and the configuration parameter generate corresponding unlike signal；The mixting circuit 14 is used for according to the clock
Signal carries out Frequency mixing processing to the unlike signal that the signal generating circuit 13 generates, obtains mixed frequency signal and export.
Specifically, the clock circuit 11 can provide different clock signals to each circuit in frequency source 10.In general,
Clock circuit 11 can be made of clock generator (i.e. clock chip), crystal oscillator, capacitor, resistance and inductance etc., wherein clock
Chip is started to work after receiving certain voltage, and the basic frequency of generation is input to the oscillation inside clock chip by crystal oscillator
Device, the basic frequency come out from oscillator are input to each frequency dividing after " frequency expansion locking phase network " carries out frequency expansion
Device, and then obtain the clock signal of different frequency.In addition, clock circuit 11 other each circuits can be provided into frequency source 10
The different clocks signal of demand.
The digital control circuit 12 can be field programmable gate array (Field-Programmable Gate
Array, FPGA) or Complex Programmable Logic Devices (Complex Programmable Logic Device, CPLD), it should
Digital control circuit can be adapted for various communications protocols.In the present embodiment, digital control circuit 12 can select Cyclone
The FPGA of series, and frequency source 10 can carry out radar parameter transmitting using SPI protocol.Wherein, digital control circuit 12 can
According to the preset operating conditions of radar system, obtained signal generating circuit configuration parameter flexible configuration to signal is generated electricity
Road 13.Wherein, signal generating circuit configuration parameter may include Direct Digital Synthesizer configuration parameter and local oscillator base
Quasi- circuit configuration parameter.
The signal generating circuit 13 can based on the clock signal received, respond configuration parameter with generate it is corresponding not
Same signal.Wherein, signal generating circuit 13 can work in numeric field.
The mixting circuit 14 can be based on the clock signal received, the difference generated to the signal generating circuit 13
Signal carries out Frequency mixing processing, obtains mixed frequency signal.Optionally, which can be emitted by radar antenna, and this is mixed
Frequency signal is equivalent to radar signal.
It wherein, can be electrical connection between each circuit in the frequency source 10.In addition, in frequency source 10 at parameter configuration
Reason can be realized by software program, and the software program configuration section can be packaged into general module.
Optionally, the frequency source 10 further includes isolation resistance 15, the output end of the isolation resistance 15 and the number
Second input terminal of control circuit 12 connects.
It it should be noted that above-mentioned isolation resistance 15 can be 50 ohm, and can also be the resistance of small resistance value.
The isolation resistance 15 can be connected to the interface end of digital control circuit 12, in radar parameter garbage signal or clutter noise into
Row isolation, to guarantee radar parameter handled by frequency source 10 not by external interference.
Frequency source provided in this embodiment, the frequency source include clock circuit, digital control circuit, signal generating circuit with
And which kind of mode mixting circuit, frequency source work in the case where in uncertain radar system, it can be according to communication protocol to thunder
It is parsed to obtain different configuration parameters up to parameter, and different configuration parameters is respectively configured frequency source, response configuration
Parameter can produce corresponding multi-signal form, flexibly obtains required signal under radar system preset operating conditions, mentions
The utilization rate of high radar system, and flexibly debugging radar system is realized by flexible configuration radar parameter, in system debug
Cheng Zhong can cooperate as simulation signal generator；In addition, hardware and software can also be realized modularization, standardization by frequency source.
Fig. 4 is a kind of concrete structure schematic diagram for frequency source 10 that another embodiment provides, as shown in figure 4, the frequency
Signal generating circuit 13 in source 10 includes: Direct Digital Synthesizer 131 and local oscillator reference sub-circuit 132.
Wherein, the Direct Digital Synthesizer 131 is used for according to the clock signal received, and response is direct
Digital frequency synthesizer configuration parameter generates FM signal；
The local oscillator reference sub-circuit 132 is used to be matched according to the clock signal and local oscillator reference circuit that receive
It sets parameter and carries out frequency handover, generate point-frequency signal.
Specifically, Direct Digital Synthesizer 131 can work in numeric field.Wherein, it is wanted according to radar system
It asks, Direct Digital Synthesizer 131 can receive digital control circuit 12, by frequency-modulated form, subpulse number, difference
Subpulse bandwidth, pulsewidth and at least two parameters in the repetition period carry out type conversion, obtained Direct Digital frequency
Rate synthesizer configuration parameter, and Direct Digital Synthesizer configuration parameter is responded, generate FM signal.Optionally, frequency
The model for the Direct Digital Synthesizer 131 chosen in source 10 can be according to radar system under preset operating conditions, institute
The information such as the clock signal and frequency of factor radar system in need of consideration determine.Optionally, direct digital frequency synthesier
The configuration parameter that device 131 can be sent based on the clock signal received, responding digital control circuit 12, by different configuration parameters
Frequency synthesis processing is carried out, FM signal is obtained.It is connect in addition, the interface end of Direct Digital Synthesizer 131 can identify
The multiple and different configuration parameters received, and these different configuration parameters are responded, obtain FM signal.
It should be noted that the interface end of local oscillator reference sub-circuit 132 can identify received configuration parameter, and to its into
Line frequency point handoff response, obtains point-frequency signal.Wherein, local oscillator reference sub-circuit 132 can be preferred circuit.
Wherein, the clock circuit 11 in frequency source 10 and other circuits (i.e. digital control circuit 12, signal generating circuit 13
And mixting circuit 14) by electrical connection, still, clock circuit 11 is not showed that in the structural schematic diagram of Fig. 4 frequency source 10
With the connection relationship of other circuits.
Frequency source provided in this embodiment, the frequency source include signal generating circuit, which includes straight again
Digital frequency synthesizer and local oscillator reference circuit are connect, frequency source can parse radar parameter by communication protocol,
Different configuration parameters is obtained, and different configuration parameters is respectively configured straight according to the preset operating conditions of radar system
Connect digital frequency synthesizer and local oscillator reference circuit, Direct Digital Synthesizer and local oscillator reference circuit and to matching
It sets parameter to be responded, can produce corresponding multi-signal form, can flexibly obtain radar system preset operating conditions
Under required signal, and by flexible configuration radar parameter realize flexibly debugging radar system, during system debug,
It can cooperate as simulation signal generator；In addition, hardware and software can also be realized modularization, standardization by frequency source.
As one of embodiment, the mixting circuit 14 includes radio frequency reference sub-circuit 141 and frequency mixer 142,
The output end of the radio frequency reference sub-circuit 141 is connect with the input terminal of the frequency mixer 142.
Wherein, the radio frequency reference sub-circuit 141 is used to generate radio frequency reference letter according to the clock signal received
Number；
The frequency mixer 142 is used to respectively believe the FM signal and the point-frequency signal with the radio frequency reference
Number carry out Frequency mixing processing, obtain the mixed frequency signal and export.
Specifically, the clock signal that radio frequency reference sub-circuit 141 can be sent according to clock circuit 11, generates radio frequency reference
Signal.Wherein, radio frequency reference sub-circuit 141 can be preferred circuit.
It should be noted that may include multiple frequency mixers 142 in mixting circuit 14, each frequency mixer 142 can divide
The point-frequency signal that the FM signal and local oscillator reference sub-circuit 132 that Direct Digital Synthesizer 131 is not generated generate
Frequency mixing processing is carried out with the radio frequency reference signal that radio frequency reference sub-circuit 141 generates, obtains mixed frequency signal.
Optionally, with continued reference to Fig. 4, the frequency mixer 142 includes the first frequency mixer 1421 and the second frequency mixer 1422,
The input terminal of first frequency mixer 1421 is connect with the output end of the radio frequency reference sub-circuit 141, second frequency mixer
1422 input terminal is connect with the output end of the radio frequency reference sub-circuit 141；
First frequency mixer 1421 is used to the FM signal and the radio frequency reference signal carrying out Frequency mixing processing, obtains
To the pumping signal and export；
Second frequency mixer 1422 is used to the point-frequency signal and the radio frequency reference signal carrying out Frequency mixing processing, obtains
To the local oscillation signal and export.
It is understood that the radio frequency reference signal that the first frequency mixer 1421 can generate radio frequency reference sub-circuit 141,
Frequency mixing processing is carried out with the FM signal that Direct Digital Synthesizer 131 generates, obtains pumping signal.
The radio frequency reference signal that second frequency mixer 1422 can generate radio frequency reference sub-circuit 141, with local oscillator base
The point-frequency signal that quasi- sub-circuit 132 generates carries out Frequency mixing processing, obtains local oscillation signal.
In addition, the local oscillation signal that pumping signal and the second frequency mixer 1422 that the first frequency mixer 1421 generates generate is equal
It can be radar signal, and can be emitted by radar antenna.
Illustratively, the communication protocol that radar system uses sets the frequency by taking two subpulses as an example, in radar system
Source, which can parse, leads to letter agreement acquisition radar parameter, and carries out type conversion to radar parameter, and match what is obtained after conversion
Parameter is set, is respectively configured in the Direct Digital Synthesizer 131 and local oscillator reference sub-circuit 132 in frequency source 10,
Direct Digital Synthesizer 131 and local oscillator reference sub-circuit 132 simultaneously respond configuration parameter, then response signal is mixed
Frequency is handled, and obtains different pumping signals.Wherein, when waveform a is the reference that the clock circuit 11 in frequency source 10 provides in Fig. 5
Clock.
As shown in figure 5, wherein waveform c is the first excitation signal waveforms figure that the frequency source 10 in radar system generates,
In this case, two subpulses are linear FM signal or NLFM signal, modulating bandwidth is identical, adjustable pulse width, weight
The multiple period is adjustable, is spaced adjustable between two subpulses, and waveform b in Fig. 5 can be repetition period that frequency source 10 receives
Signal waveforms, the waveform c in Fig. 5 are the first excitation signal waveforms figure that frequency source 10 generates in corresponding situation.
Second of excitation signal waveforms figure that the frequency source 10 being illustrated in figure 6 in radar system generates, in this case, two
A subpulse is linear FM signal or NLFM signal, and modulating bandwidth is not identical, and adjustable pulse width, the repetition period can
It adjusts, is spaced between two subpulses adjustable, the waveform d in Fig. 6 is that second of excitation that frequency source 10 generates is believed in corresponding situation
Number waveform diagram.
The third excitation signal waveforms figure that the frequency source 10 being illustrated in figure 7 in radar system generates, in this case, two
A subpulse, one of subpulse be linear FM signal or NLFM signal, the point-frequency signal of another subpulse,
Adjustable pulse width, the repetition period is adjustable, is spaced adjustable between two subpulses, and waveform e in Fig. 7 is frequency source in corresponding situation
10 the third excitation signal waveforms figure generated.
The 4th kind of excitation signal waveforms figure that the frequency source 10 being illustrated in figure 8 in radar system generates, in this case, two
A subpulse is point-frequency signal, and adjustable pulse width, the repetition period is adjustable, and adjustable, the waveform in Fig. 8 is spaced between two subpulses
F is the 4th kind of excitation signal waveforms figure that frequency source 10 generates in corresponding situation.
The 5th kind of excitation signal waveforms figure that the frequency source 10 being illustrated in figure 9 in radar system generates, in this case, two
A subpulse can be arbitrary signal form, and frequency point can be tuned into different, and waveform g in Fig. 9 is frequency source in corresponding situation
10 the 5th kind of excitation signal waveforms figures generated.
The 6th kind of excitation signal waveforms figure generated as shown in Figure 10 for the frequency source 10 in radar system, in this case only
A subpulse is generated, the signal form of the subpulse can be linear frequency modulation or nonlinear frequency modulation, and bandwidth is adjustable, and frequency point can
It adjusts, the waveform h in Figure 10 is the 6th kind of excitation signal waveforms figure that frequency source 10 generates in corresponding situation.
The 7th kind of excitation signal waveforms figure generated as shown in figure 11 for the frequency source 10 in radar system, in this case only
A subpulse is generated, which is point-frequency signal, and adjustable pulse width, the repetition period is adjustable, and the waveform i in Figure 11 is corresponding feelings
Under condition, the 7th kind of excitation signal waveforms figure of the generation of frequency source 10.
The 8th kind of excitation signal waveforms figure generated as shown in figure 12 for the frequency source 10 in radar system, in this case,
Frequency source 10 is dormant state, and the waveform j in Figure 12 is the 8th kind of excitation signal waveforms that frequency source 10 generates in corresponding situation
Figure.
A kind of pumping signal for 10 pairs of frequency source generations in radar system is corrected as shown in figure 13, and the one of generation
Correction signal waveform diagram is planted, in this case, needing to increase switch after the frequency mixer 142 in frequency source 10 also to generate align mode
Signal, the waveform k in Figure 13 are the correction signal waveform diagram that frequency source 10 generates in corresponding situation, wherein correction signal can be with
For point-frequency signal.
In the present embodiment, frequency source 10 not only can produce the pumping signal as shown in Fig. 5-Figure 12, can also produce
The signal of raw other forms.
Frequency source provided in this embodiment, the frequency source include radio frequency reference sub-circuit and frequency mixer, and frequency mixer will be penetrated
The radio frequency reference signal that frequency benchmark sub-circuit generates generates point-frequency signal and FM signal progress that signal generates with signal respectively
Frequency mixing processing obtains required mixed frequency signal under radar system preset operating conditions, and it is default can flexibly to obtain radar system
Required signal under operating condition, and flexibly debugging radar system is realized by flexible configuration radar parameter, in system tune
During examination, it can cooperate as simulation signal generator.
With continued reference to Fig. 1, Fig. 1 is the concrete structure schematic diagram for the radar system that an embodiment provides.As shown in Figure 1, should
Radar system includes that frequency source 10 as described above and agreement play dot circuit 20；The agreement rise dot circuit 20 output end with every
Input terminal connection from resistance 15, the output end of the isolation resistance 15 are connect with the input terminal of the frequency source 10.
Wherein, the agreement plays dot circuit 20 and is used to issue communication protocol to the frequency source 10.Wherein, the clock electricity
Road 11 can also provide sampling clock to the radar system.
Specifically, the frequency source 10 and agreement in radar system, which play dot circuit 20, can pass through electrical connection.It needs to illustrate
, agreement, which plays dot circuit 20, to be the host computer or signal processing unit in radar system.Optionally, agreement plays dot circuit
20 can also provide repetition rate parameter for frequency source 10.
Illustratively, waveform d as shown in figure 14 is another pumping signal that the frequency source 10 in radar system generates
Waveform diagram, wherein the waveform a in Figure 14 is the reference clock that the clock circuit 11 in frequency source 10 provides, the waveform b in Figure 14
For the repetition period signal waveforms that frequency source 10 receives, the waveform c in Figure 14 is the time delayed signal that frequency source 10 receives
Waveform diagram, in this case, agreement plays dot circuit 20 at the time of can control the repetition period after delay and frequency, the waveform in Figure 14
D is the excitation signal waveforms figure that frequency source 10 generates in corresponding situation.
Radar system provided in this embodiment, the radar system can play dot circuit for the thunder in operating mode by agreement
It is come out up to Parameter analysis of electrochemical, different radar parameters is informed that frequency source, frequency source can respond configuration respectively by communication protocol
Different types of parameter, obtain corresponding signal form, can flexibly obtain the signal of radar system demand, improve radar system
The utilization rate of system, and realize that flexibly debugging radar system can during system debug by flexible configuration radar parameter
Cooperation is used as simulation signal generator.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application the scope of the patents therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the concept of this application, various modifications and improvements can be made, these belong to the guarantor of the application
Protect range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (12)
1. a kind of radar parameter configuration method, which is characterized in that the described method includes:
Communication protocol is received by the frequency source of radar system；
The radar parameter in the communication protocol is parsed, Direct Digital Synthesizer configuration parameter and local oscillator reference are obtained
Circuit configuration parameter；
The Direct Digital Synthesizer configuration parameter is configured to Direct Digital Synthesizer, by the local oscillator base
Quasi- circuit configuration parameter configuration is to local oscillator reference circuit.
2. the method according to claim 1, wherein the radar parameter in the parsing communication protocol, obtains
To Direct Digital Synthesizer configuration parameter and local oscillator reference circuit configuration parameter, comprising:
Judge whether the radar parameter parsed from the communication protocol meets the preset operating conditions of radar system；
If the radar parameter meets the preset operating conditions of the radar system, type is carried out to the radar parameter and is turned
It changes, obtains Direct Digital Synthesizer configuration parameter and local oscillator reference circuit configuration parameter.
3. according to the method described in claim 2, it is characterized in that, described in judge that from the communication protocol, parsing obtains
After whether radar parameter meets the preset operating conditions of radar system, the method also includes:
If the radar parameter does not meet the preset operating conditions of the radar system, the radar parameter is not stored.
4. the method according to claim 1, wherein the radar parameter include: the repetition period, frequency-modulated form,
At least one of subpulse number, different subpulse bandwidth, pulsewidth and frequency point parameter.
5. according to the method described in claim 2, it is characterized in that, it is described to the radar parameter carry out type conversion, obtain
Direct Digital Synthesizer configuration parameter and local oscillator reference circuit configuration parameter, comprising:
The frequency point is subjected to type conversion, obtains the local oscillator reference circuit configuration parameter；
By the frequency-modulated form, the subpulse number, different subpulse bandwidth, pulsewidth and the repetition period, frequency point
In at least two parameters carry out type conversion, obtain the Direct Digital Synthesizer configuration parameter.
6. a kind of frequency source, which is characterized in that the frequency source includes: clock circuit, digital control circuit, signal generating circuit
And mixting circuit, first input end, the signal generation of the output end of the clock circuit and the digital control circuit
The connection of the first input end of the first input end of circuit and the mixting circuit, the output end of the digital control circuit and institute
The second input terminal connection of signal generating circuit is stated, the second of the output end of the signal generating circuit and the mixting circuit is defeated
Enter end connection；
Wherein, the clock circuit is used for the digital control circuit, the signal generating circuit and the mixting circuit
Clock signal is provided；
The digital control circuit is for receiving radar parameter and the clock signal, based on the clock signal to the thunder
It is parsed up to parameter, obtains signal generating circuit configuration parameter, and the signal generating circuit configuration parameter is configured to
In the signal generating circuit；
The signal generating circuit is used to generate corresponding unlike signal according to the clock signal and the configuration parameter；
The mixting circuit is used for according to the clock signal, and the unlike signal generated to the signal generating circuit is mixed
Processing, obtains mixed frequency signal and exports.
7. frequency source according to claim 6, which is characterized in that the frequency source further includes isolation resistance, the isolation
The output end of resistance is connect with the second input terminal of the digital control circuit.
8. frequency source according to claim 6, which is characterized in that the signal generating circuit includes Direct Digital frequency
Synthesizer and local oscillator reference circuit；
The Direct Digital Synthesizer, for responding Direct Digital frequency according to the clock signal received
Synthesizer configuration parameter generates FM signal；
The local oscillator reference circuit is used to be carried out according to the clock signal and local oscillator reference circuit configuration parameter that receive
Frequency handover generates point-frequency signal.
9. frequency source according to claim 6, which is characterized in that the mixting circuit include: radio frequency reference sub-circuit with
And frequency mixer, the output end of the radio frequency reference sub-circuit are connect with the input terminal of the frequency source；
The radio frequency reference sub-circuit is used to generate radio frequency reference signal according to the clock signal received；
Multiple frequency mixers be used for by the FM signal and the point-frequency signal, respectively with the radio frequency reference signal into
Row Frequency mixing processing obtains the mixed frequency signal and exports.
10. frequency source according to claim 9, which is characterized in that the frequency mixer includes the first frequency mixer and second
Frequency mixer, the input terminal of first frequency mixer are connect with the output end of the radio frequency reference sub-circuit, second frequency mixer
Input terminal connect with the output end of the radio frequency reference sub-circuit；
First frequency mixer is used to the FM signal and the radio frequency reference signal carrying out Frequency mixing processing, obtains described sharp
It encourages signal and exports；
Second frequency mixer is used to the point-frequency signal and the radio frequency reference signal carrying out Frequency mixing processing, obtains described
Vibration signal simultaneously exports.
11. a kind of radar system, which is characterized in that the radar system includes such as the described in any item frequencies of claim 6-10
Source and agreement play dot circuit；The input terminal of output end and isolation resistance that the agreement plays dot circuit connects, the isolation electricity
The output end of resistance is connect with the input terminal of the frequency source.
12. radar system according to claim 11, which is characterized in that the agreement plays dot circuit and is used for the frequency
Source issues communication protocol.
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