Method for Speed Measurement of Small Radar Targets Based on Adaptive Signal Separation

As with the development of stealth aircrafts and micro UAV technology, the parameter measurement of small target at low altitude is becoming difficult for conventional search radar. For solving the speed measurement of small targets on background of strong clutters, an innovative method for small target speed measurement, which is based on the adaptive signal separation technique, is presented in this paper. This method can separate the signal of target from the background of strong clutter in the stagger PRF mode of conventional search radar, and then implement the parameter measurement of small targets. It has been proven in the simulation demonstration that this method is very robust to clutters and has the accuracy of speed measurement close to that obtained by Cramer-Rao Lower Bound.