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《Telecommunication Engineering》 2010-08
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Phase Compensation for Frequency Synthesizer of a W-band Stepped Frenquency Radar

BI Bo1,ZHANG Yong-jie1,LI Min2,ZHU Huai-cheng1(1.National Key Laboratory of Millimeter Wave System,Beijing Institute of Remote-Sensing Equipment,Beijing 100039,China;2.Harbin Institute of Technology,Harbin 150001,China)  
The theory of using the stepped frequency radar signal to acquire high range resolution is introduced in this paper.Considering the aberrance of range profile in the W-band stepped frequency radar system test,which is caused by the phase variation between local oscillator and excitation source at different frequency points,the effect of phase variance on high resolution range profile is analysed,and a phase compensation method at each frequency point is proposed based upon the principle of high resolution range profile using stepped frequency.The feasibility of this method is proved by Matlab simulation with real data acquired,and verified in the following radar test.Moreover,this method requires no high coherence among various frequencies to obtain high resolution range profile,so it can effectively reduce the difficulty in W-band frequency synthesizer design and tunning.
【CateGory Index】: TN957.51
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