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Space time adaptive processing for SONAR
2008 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In both radar and sonar, in fact in all situations where an array of elements is used, one of the interests is to locate targets both spatially and in terms of velocity. In order to have a good estimate of a target's bearing and velcity , the signal that is analysed has to be well measured, and well suited for the kind of the analysis made. This thesis is carried out at FOI, the Swedish Defence Research Agency. The goal is to implement a fully adaptive space-time processor and identify the main difficulties and try to explain them. Two different methods for handling the noise and interference covariance matrix are described and evaluated. It turns out that the adaptive processors outperform the conventional way of analysing signals, however to a high computational cost. Still, many improvements are to be done and the main field of interest should be the estimation of the covariance matrix and also the estimation of number of interference sources.

Place, publisher, year, edition, pages
Keyword [en]
Technology, Beamforming, STAP, Space-Time Adaptive Processing, Diagonal, loading
Keyword [sv]
URN: urn:nbn:se:ltu:diva-51607ISRN: LTU-EX--08/138--SELocal ID: 8cda0f48-f116-444f-a672-88ef7ef13cf4OAI: diva2:1024969
Subject / course
Student thesis, at least 30 credits
Educational program
Arenaprogrammes (2002-2014)
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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