In this presentation, the results of our investigation into the application of a clutter cancellation technique knwon as the Displaced Phase Centre Antenna (DPCA) technique to SBR are discussed. In principle, this technique seeks to compensate the platform motion, thereby reducing the target masking effect produced by the background clutter. This is done by matching the timing of the radar pulses to the motion of the satellite platform. This study can be regarded as an extension of the DPCA techniques implemented for airborne radars. The approach adopted is similar to that outlined by Kelly and his coworkers. An analytic model of the DPCA system is formulated here to provide to tool for carrying out quantitative performance studies. Improvement factors are computed as a function of the radar beam grazing angle, pulse repetition rate, the length of the pulse train and the antenna dimensions.
Displaced phase centre antenna clutter suppression in space-based radar applications
Clutterunterdrueckung mit phasenverschobenen Antennenanlagen (DPCA) fuer Radarsysteme im Weltraum
1987
5 Seiten, 7 Bilder, 5 Quellen
Conference paper
English
A displaced phase center antenna concept for space based radar applications
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