Publications [#283437] of Qing H. Liu

Papers Published

1. Lei, S; Zhao, Z; Nie, Z; Liu, QH, Adaptive optimal polarization detection of target in clutter background based on generalized Rayleigh quotient, Progress in Electromagnetics Research Symposium (January, 2014), pp. 234-238, ISSN 1559-9450, ISBN 9781934142288
   (last updated on 2023/08/08)

   Abstract:
   Most current methods on polarization targets detection assume the target echoes to be ascertained in signal model during the detection period. But in fact, the target echo may obey a kind of distribution and the distribution relates with the polarizations. Aiming at improving the performance of polarization detection, an adaptive generalized likelihood ratio (AGLR) polarization detector is proposed. The detector assumes the target echo to be a non-zero mean Gaussian distribution with respect to the polarization states of transceiver. It adaptively adjusts the polarization states of transceiver according to the variation of the polarization characteristics of target and clutter to maximize signal to clutter and noise ratio (SCNR). The problem of maximizing the SCNR is converted to a problem of maximizing a generalized Rayleigh quotient (GRQ). Based on the GRQ, the AGLR detector is proposed. The performance of the AGLR detector is theoretically analyzed and numerically validated through some numerical experiments. Compared with two conventional GLR detectors, the AGLR detector achieves a 3 dB to 10 dB improvement.