NDLI: Long Distance Target DOA Estimation by MIMO Sonar

Content Provider	IEEE Xplore Digital Library
Author	Jin Yong Chen Guoqiang
Copyright Year	2010
Abstract	A new DOA (direction of arrival) estimator based on MIMO sonar system is proposed to estimate the DOA of long distance targets. First, wideband orthogonal signals are sent out by transmitting sensors and the output of receiving sensors is decomposed into several narrow frequency bands using FFT. The covariance matrix of receiving signals can be expressed as the superposition of the covariance matrices of different frequency bands by exploiting the orthogonal relation of frequency components of the wideband signals. Next, narrowband MIMO method is used to produce the spatial spectrum of every frequency band. Finally, spatial spectrums of all frequency bands are averaged to get source DOAs. Simulations and pool experiment show that this new method produces lower resolution threshold and better estimation performance than traditional phased-array sonar.
Starting Page	111
Ending Page	114
File Size	375299
Page Count	4
File Format	PDF
ISBN	9781424484324
DOI	10.1109/AICI.2010.146
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	DOA estimation Sonar Estimation Wideband orthogonal signal MIMO (multiple input multiple output) MIMO Sensors Arrays Direction of arrival estimation Wideband Resolution threshold
Content Type	Text
Resource Type	Article

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