通道失配條件下的MUSIC算法性能分析
A PERFORMANCE ANALYSIS OF THE MUSIC ALGORITHM IN THE PRESENCE OF CHANNEL MISMATCHING
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摘要: 本文分析了通道失配對高分辨率譜估計算法(MUSIC)的影響.推導(dǎo)了通道失配與方向估計誤差的關(guān)系表達式,給出了Cramer-Rao界和計算機模擬結(jié)果。理論和仿真結(jié)果表明:通道失配會增大方向估計誤差,使其性能變壞。
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關(guān)鍵詞:
- 通道失配; 方向估計; 自適應(yīng)陣列
Abstract: This paper presents the performance analysis of the MUSIC algorithm in the presence of channel mismatching. Theoretical expression for the error of DOA estimating with MUSIC algorithm and Cramer-Rao bound are derived. It is compared with simulations performed for some representative cases. The results of theoretical expression and simulation show that existence of channel mismatching will increase the error of DOA estimating and degrade its performance. -
Pisarenko V F. The retrieval of harmonics from a covariance function. Geophys. J. Roy. Astron. Soc., 1973, 15(1): 247-266.[2]Schmitdt R O, Multiple emitter location and signal parameter estimation. in proc. RADC Spectral Est. Workshop, Rome, NY, 1979,243-258.[3]Stoica P, Nehorai A. MUSIC, maximum likelihood[4]and Cramer-Rao bound. IEEE Trans. on ASSP. 1990, ASSP-37(5): 720-741.[5][4][6]張林讓,保錚,張玉洪.通道響應(yīng)失配對DBF天線旁瓣電平的影響.機載預(yù)警雷達技術(shù)交流會論文集.北京,1993.4, 181-188.[7]倪晉麟,李振,張光義.通道失配對自適應(yīng)陣列的影響.現(xiàn)代雷達,1994,16(3): 53-59.[8]Swindlehurst A, Kailath T. A performance analysis of subspace-based methods in the presence of model error: Part I--The MUSIC algorithm. IEEE Trans. on SP. 1992, SP-40(7): 1758-1774. -
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