CN1924607B - Method for controlling multiple working conditions high frequency radar receiver - Google Patents
Method for controlling multiple working conditions high frequency radar receiver Download PDFInfo
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- CN1924607B CN1924607B CN200610124528A CN200610124528A CN1924607B CN 1924607 B CN1924607 B CN 1924607B CN 200610124528 A CN200610124528 A CN 200610124528A CN 200610124528 A CN200610124528 A CN 200610124528A CN 1924607 B CN1924607 B CN 1924607B
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Abstract
This invention relates to high frequency radar receiver control method with multi-status, which adopts different status mark in the synchronic controller and sets different work status in different work status radar receiver system; synchronic controller generates one series of time control signals determined by the work status program to receive effective trigger signals and set the output mark as current status according to reset level and meter reads; wave generation part is composed of multiple work status, unwork, initializing status, work_1,work_2,... For relative work status.
Description
Technical field
The present invention relates to a kind of radar synchronisation control means, specifically, is technical in existing individual task sequential control, finishes the sequential control of a plurality of duties and finishes corresponding data acquisition simultaneously.
Background technology
Portable high frequency groundwave radar marine environmental monitoring system is the advanced radar system of the Marine Environmental Elements such as detection ocean surface wind, wave, flow field and low speed moving target of Wuhan University's development, this radar receiver has adopted multimode sequential control synchronous control technique, can finish the function that radar echo signal is handled and frequency spectrum data is gathered in the work period by a radar, and provide a feasible scheme for the realization of multifrequency radar again, improve the anti-jamming capacity of radar, reduced design cost simultaneously again.
This radar receiver has adopted isochronous controller to be responsible for the co-ordination of each parts in the system, for providing, triggers and timing signal the miscellaneous part in the system, native system has adopted the hardware platform of field programmable logic array (FPLA) (FPGA) as synchro control, can satisfy in real time accurately synchronous sequence control requirement preferably, and can integrated rest channels control and the function of data transmission.Radar system requires the generation of synchronous control signal to have very high accuracy, and stability and reliability are to avoid causing the phase error of system.
A utility model patent of Wuhan University " high-frequency ground wave radar numeral coherent receiver " (ZL:200420057632.3), this radar receiver adopts transmitting-receiving, and station, linear frequency modulation interrupt continuous wave, mixing bandpass sampling and digital signal processor and finish multichannel data processing altogether; Have stable performance, simple in structure, system linear degree and the good advantage of dynamic stability; But the isochronous controller of radar can only be finished single duty, function singleness in a work period.
Summary of the invention
Purpose of the present invention just is to overcome the above-mentioned shortcoming and defect that prior art exists, and a kind of control method of high-frequency radar receiver of multiple working conditions is provided, thereby realizes the flexible configuration to the radar duty.Can finish a plurality of duties a work period, for example duty can be configured to Echo Processing state and spectrum monitoring state, perhaps radar system is configured to the multifrequency radar system.
Technical scheme provided by the invention is: a kind of control method of high-frequency radar receiver of multiple working conditions, it is characterized in that: in the isochronous controller of high-frequency radar receiver, adopted different Status Flag work_state to be changed to residing operation state values, be arranged on different duties in different duty radar receiver systems;
The all operations of part takes place by the decision of duty control program in waveform, and this program is after receiving effective trigger signals, according to Counter Value, work_state is changed to the present located state value with the output state sign, the duty that part takes place waveform is as follows: unwork, initializing, work_1, work+2,, unwork and initializing state are the system initialization state, work_1, work+2 ... be respectively the duty that the user sets;
Finish different duty work_1, work+2 ... the time, corresponding processing is gathered and finished to its working status parameter, and indicated that header file transmits.
Principle of the present invention is:
Used timing signal and the Counter Value thereof in the isochronous controller neatly, by being set, Counter Value and state thereof realize the redirect of duty, in each work period of radar, finish a complete state transition, except system initialization required unwork and initializing state, work_1, work_2 ... be the duty that the user sets.
When input reset signal RESET is high level, waveform generating unit branch is in the unwork state, the State Control procedure identification is unwork to work_state, with all register sum counter zero clearings of inside, the synchro control program is resetted, when the input reset signal was low level, the counter tempo of duty control program was enabled and begins counting simultaneously.According to different count values, the work_state of output exports remaining duty.
State initializing leaves the initialized time period of waveform generation part for, and in this stage, the init state control program is started working, and the synchro control program circulates from dual port RAM and reads waveform parameter, sends in the relevant register.
When waveform generating unit branch is in the work_1 duty, suppose that the work_1 state is the radar system normal operating conditions, carrying out the State Control program of computing comparison output waveform this moment starts working, export a series of time sequential pulse and interrupt request control signal, as gating pulse signal (TP), press earthwave signal (BGW), radar signal source trigger pip (RFUpdate), the Radar Local-oscillator source trigger pip needed sequential trigger pips of radar operate as normal such as (LOUpdate), produce the required clock signal of a series of data acquisitions simultaneously, as sampled signal (ADCLK), sampling triggers interrupt request singal (Framel) etc., after digital signal processor (DSP) responds this interrupt request, finish data acquisition to intermediate-freuqncy signal, and finishing processing such as Digital Down Convert, fast Flourier computing, work_1 also can be set at the corresponding work state according to customer requirements.
When waveform generating unit branch is in the work_2 duty, suppose that the work_2 state is the duty that radar system is carried out frequency spectrum detection, this moment, synchro control was exported corresponding timing control signal as requested, as gate-control signal TP zero setting with radar, produce interrupt request singal simultaneously, with radar signal source reset stop output, change the frequency parameter and the triggering work in local oscillation signal source simultaneously, obtain intermediate-freuqncy signal after extraneous noise signal and the local oscillation signal mixing, and it is sampled, the sampling of this moment triggers look-at-me (Frame2) receives duty 2 as DSP interrupt request singal, DSP responds this interrupt request, and the interrupt service routine of setting according to the user is finished data acquisition and the processing to duty 2.
By that analogy, if the user has set the more work state, the user can set the corresponding work status routine as requested.
The present invention utilizes the configurability of the sequential control state of isochronous controller, disposes the duty of radar receiver neatly.Utilize timing pip in the system and set the redirect that Counter Value decides duty, when the duty program jumps to the duty of user's setting, the synchro control program can produce a series of time sequential pulse signal and corresponding interrupt request singal, make the frequency source module of control radar system, data acquisition module and data transmission module, make it co-ordination, satisfy the task that the user sets.
The isochronous controller of radar receiver of the present invention has adopted field programmable logic array (FPLA) (FPGA) to finish control to all modules, when system's power-up initializing, with Counter Value and register value zero clearing, waveform parameter is downloaded in the dual port RAM of isochronous controller simultaneously.This moment, the duty of synchro control was the unwork state, after parameter downloads finishes, enter the initializing duty, empty counter tempo, and beginning counting, the synchro control program will circulate from dual port RAM and read waveform parameter and send in the work register this moment.When the State Control program jumps to normal work stage, a series of timing control signal and interrupt request singal are all produced, system will move according to the workflow that the user sets, after a complete work period finishes, the synchro control program will enter the next work period, because system's this moment not power down as yet, need not to finish system's power-up initializing, then enter the initializing duty, tempo is carried out zero clearing, and restart counting, finish the duty of second work period.
The present invention has following advantage and good effect:
Utilized the working mechanism of radar synchronous regime control, to original single state, the synchro control structure of single task is improved, increased number of modes, make radar system in a work period, finish the more work task, in the State Control program of each duty, increase some interruptions respectively and ask signal clearly, make all the other operational modules respond interrupt request separately, in order to distinguish and to do corresponding signal process, expanded the function of radar system.
Description of drawings
Fig. 1 is the duty control flow chart in the synchro control program of the embodiment of the invention;
Fig. 2 is the system architecture diagram of higher-frequency radar;
Fig. 3 is the operational module figure of higher-frequency radar system synchronization controller.
Wherein: 1-radar frequency source operational module 2-radar emission module 3-isochronous controller operational module
The 4-echo receives and data processing module 5-main control computer 6-radar signal source trigger pip
7-Radar Local-oscillator source trigger pip 8-duty 1 interrupt request singal
9-duty 2 interrupt request singal 10-duty N interrupt request singals
11-sampled clock signal 12-presses earthwave signal 13-data collection task state 1 interrupt request singal
14-data collection task state 2 interrupt request singal 15-data collection task N state interrupt request singals
16-downloads the waveform parameter 17-result of synchro control and uploads main control computer
18-radar emission passage 19-radar emission electric wave 20-radar target
21-dual port RAM operational module 22-frequency division operational module 23-primary control program module
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, timing pulse signal is the timing reference signal in the synchro control program, be used for system's timer counter pulse signal, when system starts working, when system detects the rising edge arrival of each timing pulse signal, the value of counter tempo adds 1, compare with the state redirect critical value that sets in advance by Counter Value, as shown in FIG., when count value during less than critical value, continue to carry out the current working state program, if count value is during more than or equal to this critical value, the State Control program will jump to next duty, carry out successively, up to executing all duties, when the critical value of last duty, promptly finished a complete work period, enter the next work period, Counter Value tempo zero clearing, counting again.
Provided the frame construction drawing of radar system among Fig. 2, shown in figure, this system is by synchronization control module, the radar signal source module, radar return data acquisition and processing module, dual-mode antenna system and main control computer are formed. finished the initialization of system when the radar isochronous controller after, exporting a series of sequential control pulse by isochronous controller makes radar system start working, for example when duty 1 (work_1) is defined as the radar return treatment state, isochronous controller output frequency source interrupt request singal, radar signal source responds this interrupt request, make radar signal source start working, in order to make transmitting of radar signal source output have the initial phase of strictness with local oscillation signal, then transmiting signal source and local vibration source are by same signal triggering work; Duty 2 (work_2) can be according to the duty work of user's setting, when state jumps to duty 2, the signal source interrupt service routine of setting according to the user responds this interruption, the output of setting signal source, making it work by the signal source trigger pip again. same synchro control is all at state 1 and state 2, provide sampling pulse signal and all the other a series of timing control signals for data acquisition module in the N state, for example when the State Control program jumps to duty 1, this control program can produce interrupt request singal 12 and offer the sampling processing module, this module responds is had no progeny in being somebody's turn to do, and finish corresponding data acquisition and data processing by the interrupt service routine that the user sets, equally in working order in 2, the user can set corresponding interrupt service routine 2 and be used for the data acquisition and processing (DAP) of completion status 2, duty 3 ... duty N all can be by the program work of user's setting.
Accompanying drawing 3 has provided the element of isochronous controller, mainly by the dual port RAM module, three parts of waveform generation module and timing pip generation module are formed, the timing pip generation module is used for the input clock of isochronous controller is carried out frequency division, obtains a series of timing signal and provides timing pip for waveform generation module.Deposit the control word of waveform parameter in the dual port RAM operational module, in the time of system's power-up initializing, waveform parameter is downloaded in the dual port RAM of isochronous controller, when isochronous controller begins to carry out, then waveform parameter is read in from dual port RAM in a series of register.Use for waveform; Waveform generation module is the groundwork module of isochronous controller, mainly finishes the counting of timing pip, the comparison of count value and preset condition parameter and the redirect of duty.
Core of the present invention is with original single task, the radar system of single state is extended to multitask, multi-mode radar system, make radar in a work period, finish the more work task, the user can be according to the demand of oneself, and radar system is configured to high-frequency radar receiver and multifrequency radar system with frequency spectrum detection.Expand function of radar, improved the radar antijamming capability, need not to increase hardware device again simultaneously, reduced design cost.
Claims (1)
1. the control method of the high-frequency radar receiver of multiple working conditions, it is characterized in that: in the isochronous controller of high-frequency radar receiver, adopted different Status Flag work_state to be changed to residing operation state values, made the radar receiver system finish different tasks in different duties;
The all operations that part takes place waveform is determined by the duty control program, this program is after receiving effective trigger signals, according to Counter Value, work_state is changed to the present located state value with the output state sign, the duty that part takes place waveform is as follows: unwork, initializing, t_work_1, t_work_2, t_work_n, wherein n is a positive integer, unwork and initializing state are the system initialization state, t_work_1, t_work_2 ..., t_work_n is respectively the duty that the user sets;
Finish different duty t_work_1, t_work_2 ..., in the time of t_work_n, corresponding processing is gathered and finished to its working status parameter, and indicated that header file transmits.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610124528A CN1924607B (en) | 2006-09-14 | 2006-09-14 | Method for controlling multiple working conditions high frequency radar receiver |
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| CN200610124528A CN1924607B (en) | 2006-09-14 | 2006-09-14 | Method for controlling multiple working conditions high frequency radar receiver |
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| CN1924607B true CN1924607B (en) | 2010-05-12 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101566684B (en) * | 2009-06-08 | 2012-03-07 | 武汉大学 | Radar digital signal processing method and device thereof |
| CN102331571B (en) * | 2011-09-09 | 2014-01-29 | 武汉德威斯电子技术有限公司 | Device for automatically switching working mode of ground wave radar |
| CN102780912B (en) * | 2012-07-30 | 2015-02-11 | 中国船舶重工集团公司第七0九研究所 | Test method of radar video transmission channel |
| CN113721512B (en) * | 2021-08-26 | 2023-05-23 | 中国民用航空总局第二研究所 | Radar control method, electronic device, and storage medium |
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Patent Citations (6)
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| US4172255A (en) * | 1977-08-08 | 1979-10-23 | The United States Of America As Represented By The Secretary Of The Interior | HF coastal current mapping radar system |
| US20060017607A1 (en) * | 2004-07-26 | 2006-01-26 | Kyocera Corporation | Amplitude modulator, selector switch, high frequency transmitting/receiving apparatus including the same, and radar apparatus, and radar apparatus-mounting vehicle and radar apparatus-mounting small ship |
| CN1687805A (en) * | 2005-04-27 | 2005-10-26 | 南京大学 | Integrated measuring systme for radar receiver |
| CN1804656A (en) * | 2006-01-20 | 2006-07-19 | 武汉大学 | Method for calibrating high-frequency radar antenna array channel by using ionosphere echo |
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