Stability Improvements of Radar Transmitters

he overall objective of this proposal is to develop an approach to improve transmitter stability in order to improve radar clutter suppression performance. One approach is to develop an algorithm to effectively 'equalize' out the instability characteristics of the transmitter. This requires sampling of each transmitted pulse, and real-time development of an equalizer filter to be applied to each pulse. A viable solution has been proposed in work performed by NRL. The specific equalizer design approach taken in this work is a frequency domain approach which uses the transmitter samples to generate filter coefficients that yield the ideal matched filter response when the returns are applied. While it is effective in removing the effects of transmitter instability, it assumes a high SNR on the transmitter sample to achieve the best performance. BCI proposes the use of a MMSE equalizer to achieve a more optimal set of coefficients that allow for the removal of the effects of transmitter instability at various SNRs.