Radar watermark waveform

A novel method of anti deceiving jamming is proposed. Normal radar waveform is vulnerable to jammer´s interception and analysis. If modify the phase of normal waveform according to minimum correlation between the primitive and modified one, and if the phase varying is minor, the jammer may not perceive it and still transmit the intercepted normal waveform. Filtering the corresponding echoes with the weighted mismatched filter adapt to the modified waveform, radar can suppress the fake target introduced by the jammer without loss of real targets. We call such method as watermark technology of radar waveform, and call the corresponding waveform as radar waveform with watermark or radar watermark waveform, for it is analog to watermark in anti-counterfeit and product guard. The simulation results indicate the method is effective and feasible.