不同极化方式天线对GNSS-IR高度反演的影响  

Impact of antennas of different polarization modes on GNSS-IR altitude retrieval

作　　者：刘续 王式太 钟振华 殷敏 魏嘉林 姜新伟 LIU Xu;WANG Shitai;ZHONG Zhenhua;YIN Min;WEI Jialin;JIANG Xinwei(College of Geomatics and Geoinformation,Guilin University of Technology,Guilin,Guangxi 541006,China;Guangxi Key Laboratory of Spatial Information and Geomatics,Guilin,Guangxi 541006,China;International Rivers and Ecological Security Research Institute,Yunnan University,Kunming 650504,China;School of Land Science and Technology,China University of Geosciences,Beijing 100083,China)

机构地区：[1]桂林理工大学测绘地理信息学院,广西桂林541006 [2]广西空间信息与测绘重点实验室,广西桂林541006 [3]云南大学国际河流与生态安全研究院,昆明650504 [4]中国地质大学(北京)土地科学技术学院,北京100083

出　　处：《导航定位学报》2024年第5期139-148,共10页Journal of Navigation and Positioning

基　　金：广西空间信息与测绘重点实验室基金项目(19-050-11-27);广西高校中青年教师科研基础能力提升项目(2022KY1163)。

摘　　要：为了进一步探讨不同极化方式的天线对低成本接收机全球卫星导航系统干涉反射技术(GNSS-IR)高度反演的影响,采用智能手机荣耀60、u-blox M8N GNSS模块搭载圆极化低成本天线及测量型接收机中海达V90分别进行高度反演。结果表明,不同的天线极化方式使接收机信噪比(SNR)呈现不同的特性,线极化天线SNR震荡幅度和震荡区间更大;智能手机和低成本接收机均可用于GNSS-IR高度反演,其精度和测量型接收机相当甚至更优;3种设备中,加载线极化天线的荣耀60高度角可用区间范围更大,反演结果数更多,反演精度最高;对于线极化天线,不同的天线方向反演精度也不相同,其中水平放置时反演精度最高。因此,在进行GNSS-IR高度反演时,选择合适的接收机、合适极化方式的天线及其放置方向可更好地兼顾成本和反演精度。In order to further discuss the impact of antennas of different polarization modes on the altitude retrieval of lowcost receiver global navigation satellite system(GNSS)-interferometric reflectometry(IR),the paper conducted altitude retrievals using the Honor 60 smartphone,u-blox M8N GNSS module equipped with circularly polarized low-cost antennas,and the surveygrade receiver Hi-Target V90.Results showed that different antenna polarization modes would help exhibit distinct characteristics in the receiver signal-to-noise ratio(SNR),with the linearly polarized antenna showing a larger amplitude and range of SNR oscillation;moreover,both the smartphone and the low-cost receiver could demonstrate the capability for GNSS-IR altitude retrieval,with comparable or even superior accuracy compared to the survey-grade receiver;furthermore,among the three devices,the Honor 60 with a linearly polarized antenna would exhibit a larger usable altitude range,yield more retrieval results,and achieve the highest retrieval accuracy;in addition,for linearly polarized antennas,the retrieval accuracy varies with antenna orientations,with the highest accuracy observed when the antenna is horizontally placed.Therefore,selecting an appropriate receiver,antenna polarization mode and orientation could be crucial for balancing cost and retrieval accuracy in GNSS-IR altitude retrieval.

关 键 词：全球卫星导航系统(GNSS)-干涉反射技术(IR) 低成本接收机 天线极化方式 圆极化天线 线极化天线 

分 类 号：P228[天文地球—大地测量学与测量工程]