文章基本信息

标题：Time Delay Estimation Performance in a Scattering Medium
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作者：S. Prasad ; M. S. Narayanan ; S. R. Desai 等
期刊名称：Defence Science Journal
印刷版ISSN：0976-464X
出版年度：2014
卷号：35
期号：3
页码：313-325
DOI：10.14429/dsj.35.6025
语种：English
出版社：Defence Scientific Information & Documentation Centre
摘要：The effects of a scattering medium on the performance of time delay estimation are considered. The medium is assumed to exhibit angular scattering, causing angular (as well as delay) dispersion and hence loss of signal coherence across the array aperture. Both the variance (via the Cramer-Rao bound) and the bias introduced in the time-delay estimates are studied. The results have been converted to bearing and range error standard deviation and bias. It is found from these studies that there is an optimum range of values for the separation distance between the sensors in the design of an array for time delay estimation, for range and bearing measurements.
关键词：Array aperture;Bearing measurement;Angular dispersion