EFFECTS OF MODEL ERRORS ON WAVE-FORM ESTIMATION USING THE MUSIC ALGORITHM

被引:29
作者
FRIEDLANDER, B [1 ]
WEISS, AJ [1 ]
机构
[1] TEL AVIV UNIV,DEPT ELECT ENGN,IL-69978 TEL AVIV,ISRAEL
关键词
D O I
10.1109/78.258129
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Sensor arrays are frequently used to separate and reconstruct superimposed signals arriving from different directions. The paper studies the effect of model errors, i.e., differences between the assumed and actual array response, on the quality of the reconstructed signals. Model errors are the limiting factor of array performance when the observation time is sufficiently long. In this paper, we analyze a signal estimation technique which is based on the MUSIC algorithm. Formulas are derived for the signal-to-interference and signal-to-noise ratios as function of the model errors. By evaluating these formulas for selected test cases we gain some insights into the sensitivity of the signal estimation problem to model uncertainty.
引用
收藏
页码:147 / 155
页数:9
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