Estimation of the Circular Error Probability for a Doppler-Beam- Sharpening-Radar-Mode

Conference: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
04/23/2012 - 04/26/2012 at Nuremberg, Germany

Proceedings: EUSAR 2012

Pages: 4Language: englishTyp: PDF

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Winkler, Volker; Bickert, Bernhard (CASSIDIAN, Wörtstrasse 85, 89077 Ulm, Germany)

A Maximum-Likelihood-Estimation for the positioning accuracy of a Doppler Beam Sharpening-Mode on an X-Band- Radar will be described in the following, in order to verify the positioning errors in the generated radar images. The positioning accuracy is quantified by the so-called circular error probability (CEP), which is the radius around the true target position containing the measured target position by a probability of 50% or 95%. A CEP model is presented along with a maximum-likelihood-test in order to compare the measured errors with the expected ones by the CEP model for true flight test data. The maximum-likelihood-test allows to take into account the correlation of the error sources and to derive standard deviations for the estimated parameters.