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Adaptive target and jamming recognition for the pulse doppler radar fuze based on a time-frequency joint feature and an online-updated naive bayesian classifier with minimal risk 被引量:6
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作者 Jian Dai Xin-hong Hao +2 位作者 Ze Li Ping Li Xiao-peng Yan 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2022年第3期457-466,共10页
This paper considers the problem of target and jamming recognition for the pulse Doppler radar fuze(PDRF).To solve the problem,the matched filter outputs of the PDRF under the action of target and jamming are analyzed... This paper considers the problem of target and jamming recognition for the pulse Doppler radar fuze(PDRF).To solve the problem,the matched filter outputs of the PDRF under the action of target and jamming are analyzed.Then,the frequency entropy and peak-to-peak ratio are extracted from the matched filter output of the PDRF,and the time-frequency joint feature is constructed.Based on the time-frequency joint feature,the naive Bayesian classifier(NBC)with minimal risk is established for target and jamming recognition.To improve the adaptability of the proposed method in complex environments,an online update process that adaptively modifies the classifier in the duration of the work of the PDRF is proposed.The experiments show that the PDRF can maintain high recognition accuracy when the signal-to-noise ratio(SNR)decreases and the jamming-to-signal ratio(JSR)increases.Moreover,the applicable analysis shows that he ONBCMR method has low computational complexity and can fully meet the real-time requirements of PDRF. 展开更多
关键词 pulse doppler radar fuze(PDRF) Target and jamming recognition Time-frequency joint feature Online-update naive Bayesian classifier minimal risk(ONBCMR)
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Study on the method of polarization suppression of cheating jamming in pulse Doppler radar 被引量:5
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作者 SongLizhong QiaoXiaolin MengXiande JinMing 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2005年第2期310-315,共6页
A jamming suppression method based on polarization signal detection is proposed under common range and velocity cheating jammingfor pulse Doppler radar. On the basis of the separation of the target and the jamming, th... A jamming suppression method based on polarization signal detection is proposed under common range and velocity cheating jammingfor pulse Doppler radar. On the basis of the separation of the target and the jamming, the range and velocity track on the true target are realized. Firstly the signal processing model of the full polarization pulse Doppler radar is introduced. Secondly the method of correct target separation is discussed, which is the twice detections of energy and polarization state on the two dimension resolution cells of range and velocity of the radar echo. Finally the simulations are performed and the results prove the validity. What's more, multiple range and velocity cheating jamming can be suppressed at the same time if the target and the jamming are different in the polarization domain. 展开更多
关键词 pulse doppler radar POLARIZATION signal detection.
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SEVERAL PROBLEMS IN DESIGNING DBS SYSTEMS FOR AIRBORNE PULSE DOPPLER RADAR
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作者 杨建航 《Chinese Journal of Aeronautics》 SCIE EI CSCD 1998年第2期20-28,共9页
SEVERALPROBLEMSINDESIGNINGDBSSYSTEMSFORAIRBORNEPULSEDOPPLERRADARYANGJianhang(杨建航)(DepartmentofAero-Electroni... SEVERALPROBLEMSINDESIGNINGDBSSYSTEMSFORAIRBORNEPULSEDOPPLERRADARYANGJianhang(杨建航)(DepartmentofAero-ElectronicEnginering,AirFo... 展开更多
关键词 pulse doppler radar doppler beam sharpening (DBS) batch processing period frame scan time
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Wind Measurement with a Wind Profiling Radar
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作者 Qi Rundong, Huang Changcheng and Tian Wenbin Beijing Institute of Radio Measurement, P. O. Box 3923, Beijing 100854, China 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 1991年第1期81-88,共8页
The first troposphere wind profiling radar in China has been in operation. The paper describes the radar parameters and characteristics with some experimental results presented.
关键词 pulsed doppler radar Wind profiler Wind measurement.
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HPRF pulse Doppler stepped frequency radar 被引量:9
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作者 LONG Teng REN LiXiang 《Science in China(Series F)》 2009年第5期883-893,共11页
Stepped frequency radar is a well known scheme to generate high range resolution profile (HRRP) of targets. Through appropriate radar parameter design, the radar enables both unambiguous velocity measurement and hig... Stepped frequency radar is a well known scheme to generate high range resolution profile (HRRP) of targets. Through appropriate radar parameter design, the radar enables both unambiguous velocity measurement and high resolution ranging within a single dwell in a high pulse repetition frequency (HPRF) mode. This paper analyzes in detail the design principle of the HPRF stepped frequency radar system, the solution to its ambiguity issue, as well as its signal processing method. Both theoretical analysis and simulation results demonstrate that the proposed radar scheme can work independently to solve the problem of motion compensation, and is therefore highly applicable to many new types of radar. 展开更多
关键词 DFT HPRF pulse doppler radar stepped frequency radar
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