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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

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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 low-cost 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 survey-grade 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.

global navigation satellite system (GNSS)-interferometric reflectometry (IR)low-cost receiverantenna polarization modecircularly polarized antennalinearly polarized antenna

刘续、王式太、钟振华、殷敏、魏嘉林、姜新伟

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桂林理工大学 测绘地理信息学院,广西 桂林 541006

广西空间信息与测绘重点实验室,广西 桂林 541006

云南大学 国际河流与生态安全研究院,昆明 650504

中国地质大学(北京) 土地科学技术学院,北京 100083

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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

广西空间信息与测绘重点实验室基金项目广西高校中青年教师科研基础能力提升项目

19-050-11-272022KY1163

2024

10.16547/j.cnki.10-1096.20240517

导航定位学报

导航定位学报

CSTPCD北大核心
影响因子：0.72
ISSN：
年,卷(期)：2024.12(5)