Robust design of constant modulus sequence and receiver in signal-dependent clutter

This paper deals with the robust transmit-receive design for a moving point-like target detection embedded in signal-dependent clutter to against the uncertain Doppler shift of clutter. Specifically, we devise an Iterative Sequential Optimization (ISO) algorithm to sequentially improve the worst-case Signal to Interference plus Noise Ratio (SINR) over clutter statistics considering a constant modulus requirement on transmit signal. Each iteration involves multiple fractional programming problems which can be efficiently solved by Dinkelbach's procedure. At the analysis stage, we assess the performance of the proposed algorithm in terms of the achieved SINR and computational time. Results also highlight that the robust design shares the capability of resisting to the possible knowledge inaccuracies on signal-dependent clutter.