Strategic Improvement of Radar Accuracy by Second Order Differential MTI Methods

To achieve better measurement of the range distance and velocity in radar system, based on Linear FM pulse compression technique, this paper presents a range measurement method utilizing the second-order differential Moving Target Indication (MTI) method. By exploring the phase or timing differences between three consecutive echoes, the background noise of the low speed moving target is filtered to enhance the radar's precision. A new echo processing model has been developed, alongside refined data processing algorithms, effectively distinguishing target objects from static backgrounds and improving overall measurement accuracy. Simulation results demonstrate the robust performance in resisting signal interference and clutter.