基于IRife算法的高精度LFMCW雷达测距方法

为实现高精度线性调频连续波(LFMCW)雷达测距,在分析Rife算法的基础上,提出了基于改进Rife(IRife)算法的LFMCW雷达测距方法。首先介绍了该方法的实现原理和实现步骤,然后在型号为EP4CE55F23A7N的FPGA芯片上进行方法实现,最后将该方法嵌入LFMCW雷达测距系统中进行现场实验验证。仿真和现场实验结果表明,在相同的信噪比条件下,相较于基于Rife算法的测距方法,基于IRife算法的测距方法均方根误差小,测距精度高,稳定性好,证明了该方法的有效性。

LFMCW radar ranging method with high precision based on IRife algorithm

To achieve high precision of linear frequency modulation continuous wave (LFMCW) radar ranging, a kind of LFMCW radar ranging method is presented based on the Improved-Rife (IRife) algorithm.At first, it introduces the principles and implementation steps of this method.And then, it implements this algorithm on FPGA of EP4CE55EF23A7N model.Finally, the algorithm embedded into the LFMCW radar ranging system is performed in field test.The simulation and experiment results verifying the effectiveness of this method show that IRife algorithm reveals its small root-mean-square error (RMSE) and high ranging precision and stability compared with the Rife algorithm under the condition of the same signal-to-noise ratio (SNR).