重频参差解模糊超宽带雷达信号参数估计

Resolving phase ambiguity in ultra-wideband radar parameter estimation based on the staggered pulse repetition frequency

针对超宽带雷达信号相关参数估计方法存在的相位模糊问题,提出基于重频参差解模糊技术的超宽带雷达信号参数估计方法,较好的解决相位模糊与参数估计精度之间的矛盾,实现了低信噪条件下对信号参数更高精度的估计.在高斯白噪声条件下对比窄带LFM信号对超宽带LFM信号进行了理论分析、仿真和比较,证明了该方法的有效性.

In order to solve the problem of phase ambiguity in the parameter estimation of Ultra -Wideband Radar signal , a method based on the resolving phase ambiguity technology of staggered PRI in ultra -wideband Radar is proposed .This method provides a better solution to the contradiction between phase ambiguity and pa -rameter estimation accuracy , which can realize the higher accuracy of signal parameter under the condition of low signal to noise ratio .Under the condition of gaussian white noise comparison of the narrowband LFM signal and the ultra-wideband LFM signal is analyzed theoretically and simulated .This method has proved effective .