Multistatic radars locating a human being behind corners based on the method of mirror localization
Kewei Wu, Chongyi Fan, Xiaotao Huang, Xiangyang Li · 2016
Non-line of sight (NLOS) is a problem that influences the accuracy of target location. However, the NLOS signals can be utilized to locate the target hidden behind corners, meanwhile, transmitter is not easy to find by anti-radiation missiles for it is hidden behinda corner. In this paper, the information of NLOS range is utilized to locate human being hidden behind the corners by our multistatic radar system based on method of mirror localization (MOML). The method of mirror localization derives from the principle mirror imaging. The echoes obtained by receiver radars have the strongest signals which do not spread through the human being marking time before restrain static clutters. We can locate the virtual image of the real transmitted antenna by taking advantage of time delay of the strongest signals based on time of arrival (TOA) before suppressing clutters. The virtual radar of the real transmitted antenna is called virtual transmitted antenna. We replace the real transmitted antenna by virtual transmitted antenna. Thus the NLOS problems are turned into the line of sight (LOS) problems. Then we can locate the human being by TOA method after restraining clutter. In the case of complex propagation models, the time delay of propagation is not necessary to be hnown in the method of mirror localization.