基于調(diào)幅廣播信號的動(dòng)目標(biāo)時(shí)差提取方法
Am signals-based time-difference extraction of moving targets
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摘要: 分析了調(diào)幅信號的循環(huán)平穩(wěn)性,并結(jié)合CCC方法得到了基于調(diào)幅信號的固定目標(biāo)時(shí)差提取方法;進(jìn)一步在分析CCC方法不足的基礎(chǔ)上得到了運(yùn)動(dòng)目標(biāo)時(shí)差提取方法AM-ECCC方法,仿真結(jié)果表明該方法不僅比相關(guān)方法性能有明顯的提高,并且具有很好的抗噪性能。Abstract: Cyclostationarity of AM signals is analyzed and time-difference extraction method based on Cycle Cross-Correlation(CCC) is presented in this paper. An Extended CCC method AM-ECCC method for moving targets is given also. Simulation results show that the given method can work more efficiently in highly corruptive environment than correlation method.
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張賢達(dá).保錚,非平穩(wěn)信號分析與處理,北京,國防工業(yè)出版社,1999,324-352[2]VV.A. Giardner, Measurement of spectral correlation, IEEE Frans. on ASSP, 19,86. ASSP-34(5).Illl 1123.[3]VV. A. Gardner, Chih-Kang Chen, Signal-selective time-difference-of-arrival estimat ion for passivc location of man-made signal sources in highly corruptive environments, Part. 1: Theory and method, IEEE Trans. on SP, 1992, SP-40(5), 1168-1184.[4]張賢達(dá),現(xiàn)代信號處理,北京,清華大學(xué)出版社,1998,12,第十章. -
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