The invention discloses a concealed target positioning method for a single building wall corner based on an ultra-
wide band multi-path utilization
radar. The main aim is to realize positioning for a non-direct-viewing target in a
city environment. The multi-path
diffraction feature of electromagnetic
waves is used for positioning a concealed target behind the corner, firstly, a moving target display technology is adopted for background compensation to restrain strong background clutters, a median filtering
algorithm is used for conducting smooth denoising
processing on compensated echo signals, then by the utilization of unit average constant
false alarm detection, peak values corresponding to a direct
diffraction path and a side wall reflection path are extracted from the echo signals, according to the geometrical relation of the two paths, in combination with the clear position of the
radar and building
layout information, the position of the target is worked out, and finally alpha-beta filtering method is introduced to improve the positioning precision of the moving target. The concealed target positioning method has the advantages that the realizing process is simple, the wholeprocess of obtaining the position of the target is small in calculation amount, and the high positioning precision for the target is realized. The concealed target positioning method can be applied to the fields of
city street fighting, terrorism combating, stability
safeguarding, disaster rescue and others.