An improved CFAR detector for non-homogeneous clutter environment

An improved CFAR detector for non-homogeneous clutter environment is proposed. At LFMCW radar receiver, after moving target detection (MTD) and linear-law envelop detector, CFAR detector is usually adopted to detect radar targets, the threshold of CFAR detector should be adaptive to the local background noise/clutter environment. Interfering targets often exist in the leading and lagging windows of the test cell which results in an increased detection threshold and a degraded probability of detection (PD). In the improved CFAR detector, an order statistic VI CFAR detector (OSVI-CFAR) is proposed to adaptively remove the interfering targets from the reference windows and increase the PD. Simulation and experiment results are given to prove the feasibility of the OSVI-CFAR detector.