岸基条件下的星载GNSS-R干涉测高精度验证评估  

Accurate verification and evaluation of on-board GNSS-R interferometric altimetry under on-shore conditions

作　　者：黄令勇 李世忠 夏俊明 王海岩 孙越强 杨日新 杜起飞 黄志勇 HUANG Lingyong;LI Shizhong;XIA Junming;WANG Haiyan;SUN Yueqiang;YANG Rixin;DU Qifei;HUANG Zhiyong(Key Laboratory of Smart Earth,Beijing 100094,China;State Key Laboratory of Geo-Information Engineering,Xi’an 710054,China;National Space Science Center,CAS,Beijing 100190,China)

机构地区：[1]智慧地球重点实验室,北京100094 [2]地理信息工程国家重点实验室,陕西西安710054 [3]中国科学院国家空间科学中心,北京100190

出　　处：《测绘学报》2024年第2期239-251,共13页Acta Geodaetica et Cartographica Sinica

摘　　要：星载GNSS-R干涉测高技术通过调制GNSS卫星信号的宽带混合码,可以实现高精度宽幅海面测高。为有效验证星载GNSS-R干涉测高性能,本文设计了基于岸基GNSS-R干涉测高结果,开展星载GNSS-R干涉测高精度等效评估的策略。评估结果表明,GNSS-R干涉测高与卫星导航系统信号体制及信号信噪比相关,星载GNSS-R干涉测高可实现分米级测高精度。本文的研究成果可为后续星载GNSS-R干涉测高工程实践提供技术参考和数据支持。The on-board GNSS-R interferometric altimetry technology utilizes wideband hybrid codes modulated on GNSS satellite signals to achieve high-precision wide-swath sea surface altimetry.In order to evaluate the performance of on-board GNSS-R interferometric altimetry,this article designs an accuracy evaluation strategy for on-board GNSS-R interferometric altimetry based on the results of on-shore GNSS-R interferometric altimetry.The evaluation results show that GNSS-R interferometric altimetry is related to the signal system and signal-to-noise ratio of satellite navigation systems.On-board GNSS-R interferometric altimetry can achieve centimeter-level altimetry accuracy.The research findings of this article provide technical reference and data support for the engineering practice of subsequent on-board GNSS-R interferometric altimetry technology.

关 键 词：GNSS-R 海面高度 干涉测高 精度验证 岸基试验 

分 类 号：P228.4[天文地球—大地测量学与测量工程]