CAJ | 학술논문

为提高线性调频连续波（ LFMCW）雷达测距精度，提出一种基于改进Rife算法的雷达测距方法。首先介绍了方法原理，并理论分析了方法的测距性能；其次，结合以FPGA EP3C55F484C8N为核心芯片的线性调频连续波雷达，探索了方法实现，并就方法实现的关键点之一———实数点处的DFT计算给出流程；然后，通过Quartus II进行时序仿真，结果显示所提方法可行；最后，利用线性调频连续波雷达实验平台进行现场测距验证，整个距离段上，系统可进行高精度测距，与现有实际测距方法相比，精度更高，稳定性更好，证明了方法的有效性。
위제고선성조빈련속파（ LFMCW）뢰체측거정도，제출일충기우개진Rife산법적뢰체측거방법。수선개소료방법원리，병이론분석료방법적측거성능；기차，결합이FPGA EP3C55F484C8N위핵심심편적선성조빈련속파뢰체，탐색료방법실현，병취방법실현적관건점지일———실수점처적DFT계산급출류정；연후，통과Quartus II진행시서방진，결과현시소제방법가행；최후，이용선성조빈련속파뢰체실험평태진행현장측거험증，정개거리단상，계통가진행고정도측거，여현유실제측거방법상비，정도경고，은정성경호，증명료방법적유효성。
In order to improve the ranging accuracy of Linear Frequency Modulated Continuous Wave radar, a ranging method of radar based on improved Rife algorithm was proposed.Firstly, the basic principle of method was intro-duced, and the ranging performance of method was analyzed theoretically.Secondly, combining the Linear Frequency Modulated Continuous Wave radar using FPGA architecture, the realization method was explored, and the real point of the DFT calculation, which is one of the key points, was exhibited.Then, the results of timing simulation by Qu-artus II showed that the method was feasible.Finally, the field ranging experiment by Linear Frequency Modulated Continuous Wave radar was conducted, the system could carry out high precision ranging in the whole distance sec-tion, it had higher accuracy and better stability than the existing ranging method, and the results validated the effec-tiveness of the proposed method.