LFMCW雷達(dá)運(yùn)動(dòng)目標(biāo)檢測與距離速度去耦合
MTD and Range-Velocity Ddcoupling of LFMCW Radar
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摘要: 為解決LFMCW雷達(dá)運(yùn)動(dòng)目標(biāo)的檢測和距離速度去耦問題,該文提出了一種將動(dòng)目標(biāo)檢測與頻域配對相結(jié)合的MTD-領(lǐng)域配對方法。該方法通過MTD實(shí)現(xiàn)對不同模糊速度目標(biāo)的檢測和分類,以簡化差拍信號頻譜,然后利用對稱三角線性調(diào)頻連續(xù)波上/下掃頻段多普勒頻移的對稱性,實(shí)現(xiàn)動(dòng)目標(biāo)距離速度去耦合。仿真結(jié)果證明了該方法的有效性。
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關(guān)鍵詞:
- LFMCW雷達(dá); 動(dòng)目標(biāo)檢測; 距離速度去耦合
Abstract: To solve the problem of Moving Target Detection (MTD) and range-velocity decoupling in LFMCW Radars, a method combining MTD with frequency domain pairing is proposed. The method realizes detection and classification of moving targets with different ambiguous velocities via MTD in order to simplify the spectrum of beat signal, then eliminates moving targets range-velocity coupling based on the symmetry of the Doppler shift between positive and negative frequency sweep in triangular frequency modulation continu- ous waves. The effectiveness of the method is demonstrated by simulations. -
楊建宇.LFMCW雷達(dá)信號模糊函數(shù)分析.信號處理,2002:18(1),39-42.[2]徐濤,金昶明,孫曉瑋,夏冠群.一種采用變周期調(diào)頻連續(xù)波雷達(dá)的多目標(biāo)識別方法.電子學(xué)報(bào),2002,30(6):861-863.[3]Yang Jianyu, Huang Shunji. Moving target indication of LFMCW radar for clutter rejection.Int. Symp. on Noise and Clutter Rejection in Radars and Imaging Sensors, Kyoto, Japan, 1989:585-589.[4]A.G. Stove. Linear FMCW radar techniques. IEE Proc.-F: Radar and Signal Processing, 1992,139(5): 343-340.[5]張立志,汪學(xué)剛,向敬成.線性調(diào)頻連續(xù)波雷達(dá)的動(dòng)目標(biāo)顯示.信號處理,2000,16(3):262-266. -
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