A study on space frequency maximal ratio combining for low elevation radar target

摘要

In tracking radar, receiving signal for low elevation target is decreased by multipath fading of sea surface refraction. We propose Space frequency Adaptive Processing using frequency agility for this problem. In this paper, restoring of receiving signal power by space diversity maximal ratio combining and the Space frequency Adaptive Processing is discussed comparing to mono-pulse and mono-pulse with non-coherent frequency agility. Following results are obtained by computer simulation in case for sea specular refraction. 1) The receiving signal power by space diversity maximal ratio combining both full DBF and subarray configurations is restored 15dB less than free space mono-pulse Σ channel. 2) The receiving signal power by Space frequency adaptive processing using frequency agility both full DBF and subarray configurations is recovered more than free space mono-pulse Σ channel in every range.