一种基于频率与相位算法的雷达雪深探测方法  

A Method of Radar Snow Depth Detection based on Frequency and Phase Algorithm

作　　者：杨溢文 姚振东[1] 佘勇[1] 何文艺 YANG Yi-wen;YAO Zhen-dong;SHE Yong;HE Wen-yi(College of Electronic Engineering,Chengdu University of Information Technology,Chengdu 610225,China)

机构地区：[1]成都信息工程大学电子工程学院,四川成都610225

出　　处：《成都信息工程大学学报》2018年第3期227-231,共5页Journal of Chengdu University of Information Technology

基　　金：国家自然科学基金资助项目(41475143);四川省教育厅创新团队资助项目(14TD0019);中国气象局大气探测重点开放实验室资助项目(KLAS201104)

摘　　要：积雪深度的探测不仅能够提供气象上的数据资料,更与人们的日常生活息息相关,由此提出一种基于FMCW雷达的无线、非接触式、自动化积雪深度探测方法,并提出了利用频率结合相位的测量算法来降低雪深探测误差,以频率测距得到粗略距离,再利用相位测距在频率测距的基础上得到更精准的距离数据,算法能够消除相位整周模糊并进一步提高雷达的探测精度。实验仿真结果表明算法能够将雷达的测距精度优化到毫米级别,并在雷达雪深探测中使测量精度保持在1 cm以内。The detection of snow depth not only provides meteorological data but also is closely related to people＇s daily life. Therefore,a wireless,non-contact and automatic snow depth detection method based on FMCW radar is proposed.And ameasurementalgorithmto reduce the snow depth detection errorcombiningthe use of frequencywith phase is proposed.Firstly,the coarse distance is obtained by frequency distance measurement,then the phase distance measurement is used to obtain more accurate distance data based on frequency distance measurement. The combined algorithm can eliminate the phase ambiguity and further improve the radar detection accuracy.The simulation results show that the proposedalgorithm can optimize the ranging accuracy of radar to millimeter level and keep the measurement accuracy within1 cm in the radar snow depth detection.

关 键 词：调频连续波雷达 雪深探测 测距算法 精度 距离模糊 

分 类 号：TN95[电子电信—信号与信息处理]