Detection of multiple targets in Non-Gaussian clutter

Presence of interfering targets causes a significant loss in detection performance. In this study, detectors of multiple targets, which are located at the same range cell but have different Doppler frequencies, are developed. The clutter is modeled to have compound-Gaussian distribution. The detectors that are designed here can alleviate the masking problem by means of considering the existence probability of an interfering target and performing the estimation of the target returns, clutter texture parameter and Doppler frequencies accordingly. The performance analysis was done through simulations and it was shown that the methods enable the detection with high probability, even in the presence of a strong interfering target. Besides, it was shown that the performance loss of the multiple-target detectors in single-target case is insignificant unless the signal to clutter ratio is too low.