Research on Target Recognition of the Millimeter Wave Car Collision Avoidance Radar Based on the LFMCW

Abstract

When adding zero to the the sampling points or weighting the sampling points to suppress the sidelobe, the result of the one-dimensional FFT processing for the target echo will appear multiple lines in the the main lobe of the spectrum. It creates fuzzy targets which we can not distinguish it is a target or multiple targets. To solve this problem, we proposed a correction algorithm. By the correction algorithm, the multiple lines in the main lobe of the spectrum can be corrected to be a single line in the main lobe. It solves the problem of fuzzy targets and improves the distance accuracy of the radar.