具有游标测距功能的相参脉冲雷达可显著提高跟踪目标径向距离的随机误差测量精度,游标测距的精度与距离初 值精度与距离增量精度有关,受距离初值精度的影响较大,距离初值的系统误差及随机误差都会作为游标距离的系统误 差引入到游标测距中。文中结合游标测距原理及模型,提出了一种提高脉冲雷达游标测距距离初值精度的方法,理论分 析和仿真结果表明,该方法可有效减少距离初值随机误差对游标测距精度的影响,提高了游标测距精度。

The vernier range measurement technology could significantly improve the stochastic range measurement precision of coherent radar. The vernier range measurement precision relates to the initial range precision and the range increment precision. The impact of the initial range precision is more serious. The system error and stochastic error of initial range can all be as the system error of the vernier range measurement. The vernier range measurement principle and model is studied. A method to improve vernier range measurement precision for pulse radar is presented. The result of theoretic analysis and emulate indicate that the method can effectively reduce the effect of initial range stochastic error on the vernier range measurement precision.