Multiple target detection and estimation of range and Doppler for OFDM-RADAR system

In many combat and civilian applications there is a need to detect and estimate parameters of multiple targets. In this paper, an algorithm to detect multiple targets in OFDM-RADAR environment is proposed. The detection is carried out by utilizing the fact that the problem of detecting targets in OFDM-RADAR environment is similar to that of the problem of detecting spectral components from the noisy observations of a complex exponential function. Further, a maximum likelihood estimator is proposed to estimate range and velocity of multiple targets. Performance of the proposed estimator is quantified by the use of two statistical parameters. From simulations, we confirm superior performance of the proposed detector and estimator for multiple target detection.