游标测距技术在脉冲雷达中的应用及精度分析

Application and Accuracy Analysis of Vernierranging Technology in Pulse Radar

游标测距技术是根据脉冲雷达接收信号的相位导出径向距离测量值,也就是在雷达起始距离基础上加上相位增量对应的距离。采用游标测距技术的脉冲测量雷达可以提高雷达径向距离的测量精度,以及提高雷达探测目标的能力。文中结合游标测距原理,建模仿真,分析游标测距精度的影响因素,并通过跟踪机载应答机信号及空间目标实际验证游标测距技术在脉冲雷达平台上应用。

Vernierranging technology is a technology to obtain radial measurement by using the phase of pulse radar received signal.That is to say,the radar staring distance is added to the distance corresponding phase increment. Both the measurement accuracy of radial measurement and the target detectivity can be improved by vernierranging technology. Combined with the principle of vernierranging,this article analyzes the measurement accuracy influence factor of vernierranging technology by modeling and simulation.Then the practical application in pulse radar is verified by tracking the signal of aircraft responder and space target.