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Radar Target Pointing Error Reduction Using Extended Kalman Filtering

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2 Author(s)
Greene, M. ; University of Alabama in Huntsville ; Stensby, J.

A new method of reducing target glint errors in radar systems is presented. The target is modeled as n reflectors whose magnitudes and phases are known. The reflector positions are described by a dynamical model driven by white Gaussian noise. The resulting vibrations of the target reflectors produce glintlike pointing errors in the radar system. An extended Kalman filter is developed to estimate the positions of the target reflectors; this information is used to substantially reduce the pointing error due to glint. Data illustrating this glint reduction is given. The model is extended by the inclusion of clutter effects modeled in the same fashion as the glint phenomenon. The results presented indicate the limits of usefulness of this technique as a function of both receiver noise and relative clutter amplitude.

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:AES-23 ,  Issue: 2 )