基于高斯插值提高雷达测距精度的研究  

Improving Radar Ranging Accuracy Based on Gaussian Interpolation

作　　者：马兰 李照照[1] 杨雪林 井伟[1] 路鲲鹏 MA Lan;LI Zhaozhao;YANG Xuelin;JING Wei;Lu Kunpeng(Xi'an Electronic Engineering Research Institute, Xi'an 710100;Test and Measuring Academy of NORINCO Group, Weinan 714200, Shaanxi;No. 6 Military Representative Office of PLA Army in Xi'an, Xi'an 710100)

机构地区：[1]西安电子工程研究所,西安710100 [2]中国兵器工业试验测试研究院,渭南714200 [3]陆军驻西安地区第六军代室,西安710100

出　　处：《火控雷达技术》2021年第1期41-47,共7页Fire Control Radar Technology

基　　金：装备发展部“十三五”预先研究课题资助项目基金(41413020901)。

摘　　要：本文结合脉冲法雷达测距原理,分析了距离量化误差产生的原因。针对LFM信号加入高斯白噪声作脉冲压缩得到的脉压波形,结合先验信息,将脉压结果主瓣内的波形近似为高斯分布,利用脉压结果中采样最大值点和次大值点的位置信息和幅度信息作高斯插值处理,预估脉压波形真实峰值时间。仿真结果表明,通过高斯插值处理,距离量化误差显著减小,雷达测距精度明显提高。In this paper,the cause of range quantization error is analyzed at first based on the principle of pulse radar ranging.After pulse compression of a radar LFM signal is performed by adding white Gaussian noise,the waveform in the main lobe of the obtained signal can be transformed to Gaussian distribution through approximate calculation according to prior information.In this case,Gaussian interpolation can be performed using the position and amplitude information of the maximum and sub-maximum sampling points in the compressed signal,so that the real peak time of the compressed waveform can be estimated.The simulation results show that Gaussian interpolation can reduce the range quantization error significantly,and therefore the radar ranging accuracy is improved obviously.

关 键 词：雷达测距 高斯插值 预估峰值时间 测距精度 

分 类 号：TN95[电子电信—信号与信息处理]