Adaptive single-tone waveform design for target recognition in Cognitive Radar

Cognitive radar is a recently proposed system concept, one of whose most important characteristics is the closed-loop operation. The feedback structure from the receiver to the transmitter enables the optimization of transmission waveforms based on the latest knowledge about targets and environments. In this paper, we propose an improved waveform design method for target recognition in cognitive radar by restricting the waveforms to be single-tone with constant envelope which are commonly used in practical transmitters. Comparing with a previously proposed method using arbitrary waveforms, our method provides almost the same performance with highly reduced computational cost in sequential transmissions.