Orthogonal Block Coded ECCM Schemes Against Repeat Radar Jammers

This paper develops radar signaling schemes to combat the impact of repeat jammers on radar systems. Robustness against jammers is achieved by employing the concept of pulse diversity where the radar, at each pulse repetition interval, emits either a modified version of the previous waveform or a new waveform following a specific orthogonal structure. Two pulse coding techniques are presented; both enable the radar to separate the signals being reflected off the true targets and the false reflectors being emulated by a jammer. Simulations are used to show the validity of the introduced concepts.