基于Jacobsen法的LFMCW雷达测距算法  

A Novel Jacobsen-based Ranging Algorithm of LFMCW Radar

作　　者：詹启东[1] 涂亚庆[1] 

机构地区：[1]后勤工程学院后勤信息与军事物流工程系,重庆401311

出　　处：《后勤工程学院学报》2014年第1期79-83,共5页Journal of Logistical Engineering University

基　　金：国家自然科学基金项目(61271449);国家青年科学基金项目(61302175);重庆市自然科学基金项目(CSTC 2011BA2015;CSTC 2012jjA0877)

摘　　要：提出了一种基于Jacobsen法的LFMCW雷达测距算法。该算法通过应用Ja—cobsen法估计规则区差拍信号的频率，并对多段规则区差拍信号进行联合分析，以提高算法的稳定性和测距精度。实验结果表明：测距范围为10～10．25m，信噪比为8～12dB，算法的绝对误差始终小于1mm；噪声干扰会在一定程度上影响算法的测距精度。Based on Jacobsen method, a novel ranging algorithm of linear frequency modulated continuous wave （LFMCW） radar is proposed. The algorithm only focuses on the beat signal in the normal area, and uses Jacobsen method to estimate its frequency of normal -area beat signal. The conjoint analysis of multi-section normal-area beat signals is conducted to improve the stability and ranging accuracy of the algorithm. The experimental results indicate that when target range is 10-10.25 m, signal-to-noise ratio is 8~ 12 dB, the absolute error of the algorithm proposed is less than 1 mm, but noise influences the ranging accuracy to some extent.

关 键 词：线性调频连续波雷达 测距精度 差拍信号 频率估计 

分 类 号：TN959.1[电子电信—信号与信息处理]