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The Research of Radar Echo Acquisition and Target Abstraction Technology

Author: DongJingJun
Tutor: YuanGanNan
School: Harbin Engineering University
Course: Navigation,Guidance and Control
Keywords: Navigation radar Sea Clutter Data Acquisition Object extraction
CLC: TN974
Type: Master's thesis
Year: 2010
Downloads: 132
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Abstract


Radar sea target detection technology in the field of military and civilian have important application value , in order to achieve the sea target detection must ensure that complete and accurate radar echo signal data . The the radar echo video signal to an analog signal , so how to build a a reliable radar signal data acquisition system , an important prerequisite for target detection . As background to the actual project an important part of the system hardware platform and software platform of the data acquisition unit , on the basis of analysis of the radar signal characteristics and the system design requirements , the first carried out a detailed analysis . The hardware platform is chosen based on the the CPCI bus IPC data acquisition card based on CPCI bus design . Selection of VxWorks system software , operating system , development platform used Tornado2.2forRTL8139driver.Zip . Then given the design of the data acquisition unit . Finally, according to the design , the data acquisition system hardware platform to build complete software design and debug , and field test results are analyzed to verify the effectiveness of the design . The use of high resolution radar detection of the sea clutter target , the sea clutter amplitude distribution model has a diversity of characteristics , using a single CFAR detection technology can not achieve the detection of surface targets . To solve this problem , this paper proposes optimized CFAR detection method . Firstly, a detailed analysis and comparison of the characteristics of sea clutter amplitude distribution and CFAR detector . Then , the field test data for this paper used for the study , completed in Matlab platform statistical analysis, come to the field test data used in this article in line with the conclusions of the Weibull distribution model . Finally VC designed and implemented based on the Weibull Log - t detectors , Weibull OS - CFAR detector , optimized Weibull Log - t detectors optimized Weibull OS - CFAR detector four detection scheme under the radar image target detection software . In the quality factor and the detection rate compared test results under the four scenarios , the results show that the Weibull OS - CFAR detection scheme optimized for optimal detection scheme .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Electronic warfare ( jamming and anti - jamming ) > Radar electronic countermeasures
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