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Article: Research from M.V. Dragosevic et al broadens understanding of aerospace engineering.(Report)
- Article from:
- Defense & Aerospace Week
- Article date:
- November 4, 2009
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"Physical modeling of the Doppler centroid (DC) can be used to predict synthetic aperture radar (SAR) Doppler ambiguity when antenna attitude is controlled or measured precisely enough. It is shown that the same model proves useful even in the cases of higher attitude uncertainty, if it is combined with suitable adaptive techniques," scientists in Ottawa, Canada report.
"In this paper, Doppler ambiguity resolution is formulated as a hypothesis testing problem over a domain of integer values that are directly related to the attitude uncertainty. A test statistic is derived from the entire SAR scene using data adaptive processing. A broad class of such adaptive ...