多信號(hào)源方向和頻率估計(jì)中通道失配和陣元互耦的一次性補(bǔ)償
CALIBRATION OF CHANNEL MISMATCHING AND SENSOR COUPLING IN DIRECTION AND FREQUENCY ESTIMATIONS
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摘要: 本文分析了空間譜估計(jì)中多信號(hào)源方向和頻率估計(jì)中通道失配和陣元互耦導(dǎo)致系統(tǒng)性能下降的機(jī)制?？朔爽F(xiàn)有矯正方法只能針對(duì)單頻信號(hào)補(bǔ)償某個(gè)影響因素的局限性,提出了通道失配和陣元互耦的綜合補(bǔ)償新技術(shù),大大提高了誤差矯正的精度。首次在同時(shí)估計(jì)多信號(hào)源方向和頻率估計(jì)中應(yīng)用誤差補(bǔ)償技術(shù)。文中方法簡(jiǎn)便易行,消聲室聲學(xué)實(shí)驗(yàn)證明了該方法是成功的。
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關(guān)鍵詞:
- 空間譜; 方向頻率估計(jì); 矯正
Abstract: In this paper, the mechanism of the performance degration due to channel mismatching and sensor coupling in azimuthms and frequencies is analyzed. A new comprehensive calibration method that can compensate error by a known sound source is proposed. The method is easy to be implemented and the results of acoustic experiments in anechoic room show that offered method is effective. -
See C M S．Method for array calibration in high-resolntion sensor array processing IEE Proc-F.1995，142(3)：90-96．[2]姚康澤，梁甸農(nóng)．模型誤差對(duì)陣列信號(hào)特征結(jié)構(gòu)的影響及一種校準(zhǔn)方法，系統(tǒng)工程與電子技術(shù)，1996，18(8)：44-47．[3]楊超，阮穎錚.空間譜估計(jì)測(cè)向中通道失配與陣元間互耦的一次性補(bǔ)償．電子科學(xué)學(xué)刊，1995：17(2)：206-209[4]李全力，肖先賜．空間譜估計(jì)測(cè)向系統(tǒng)信道失配的單信號(hào)源校正方法．電子學(xué)報(bào)，1991；19(3)：123-125．[5]殷波濤．高分辨率兩維特征譜分析的計(jì)算機(jī)模擬．聲學(xué)與電子工程，1991，10(4)：1-11。[6]Wang xneli．Calibration of channel mismatching,sensor coupling and the study of experiment in directions and frequencies estimattion．ICAMT99(International Conference on Advanced Manufacturing Technology)．西安:西安交通大學(xué)，1999，935-939. -
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