PRI变化雷达信号相位差变化率定位法研究

目前相位差变化率定位法的研究大都假设目标信号脉冲重复间隔（PRI）恒定,没有考虑到PRI变化引起的相位差变化率误差,而实际雷达信号PRI变化最为常见。研究了PRI变化信号的相位差变化率提取方法,比较了不同方法的相位差变化率估计精度。仿真结果表明采用最小二乘线性拟合法可以在各种PRI变化信号条件下达到较高的相位差变化率估计精度和定位精度。

Research into The Location Methods of Phase Difference Rate to The Radar Signal with The Variational PRI

At present the study on the location method of phase difference rate almost supposes that the pulse repetition interval（PRI）of target signal is constant,hasn＇t considered the error of the phase difference rate due to the change of PRI,but the change of PRI is most common in the actual radar signal.This paper researches into the method to extract the phase difference rate of the signals with variational PRI,compares the estimation precision of phase difference rate of different methods.The simulation results show that using the method of least square curve fitting can obtain considerable estimation precision of phase difference rate and location precision in the condition of various signals with variational PRI.