HY-2B卫星雷达高度计对流层路径延迟精度分析  

The Tropospheric Path Delay Accuracy Analysis of HY-2B Satellite Radar Altimeter

作　　者：郑广东 马纯永[1,2] 高占文 王绚 陈戈 Zheng Guangdong;Ma Chunyong;Gao Zhanwen;Wang Xuan;Chen Ge(College of Information Science and Engineering,Ocean University of China,Qingdao 266100,China;Functional Laboratory of Regional Marine Dynamics and Numerical Simulation,Pilot National Laboratory of Marine Science and Technology(Qingdao),Qingdao 266237,China)

机构地区：[1]中国海洋大学信息科学与工程学院,山东青岛266100 [2]青岛海洋科学与技术试点国家实验室区域海洋动力学与数值模拟功能实验室,山东青岛266237

出　　处：《中国海洋大学学报（自然科学版）》2023年第3期13-21,共9页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(41906155,42030406,41527901);山东省重点研究发展计划项目(2019GHZ023)资助。

摘　　要：干对流层路径延迟与湿对流层路径延迟是影响HY-2B测高精度的重要因素。本文采用星星交叉分析法和对流层独立模型检验法对HY-2B干对流层与湿对流层路径延迟产品进行对比分析。本文基于大气压强数据和辐射计测量的水汽数据,利用干对流层和湿对流层独立检验模型对HY-2B沿轨数据进行重处理,与HY-2B业务化运行产品差异的标准差分别为1.8和2.6 mm。此外,HY-2B与Jason-3交叉点处干对流层与湿对流层路径延迟差异的标准差分别为1.5和6.1 mm,两年内产品的漂移较少。实验结果表明:HY-2B干对流层与湿对流层路径延迟的精度均达到国际水平。该文对于验证国产海洋卫星HY-2B数据精度,扩展HY-2B卫星数据的应用范围具有重要意义。Dry tropospheric path delay and wet tropospheric path delay are important factors affecting the height measurement accuracy of HY-2B.In this paper,the satellite cross analysis method and tropospheric independent model validation method are used to compare and analyze the dry troposphere and wet troposphere path delay products of HY-2B.Based on the atmospheric pressure data and water vapor data measured by radiometer,this paper reprocesses the HY-2B along-track data by using the dry troposphere and wet troposphere independent validation model,The standard deviations of the differences between reprocessing results and HY-2B operational products are 1.8 and 2.6 mm respectively.In addition,the standard deviation of dry troposphere and wet troposphere path delay difference between at the cross points of HY-2B and Jason-3 is 1.5 and 6.1 mm respectively.The product drift is less in two years.The experimental results show that the accuracy of HY-2B dry troposphere and wet troposphere path delay reaches the international level.This paper is of great significance for verifying the data accuracy of domestic marine satellite HY-2B and expanding the application range of HY-2B satellite data.

关 键 词：HY-2B卫星 干对流层路径延迟 湿对流层路径延迟 交叉分析 精度分析 

分 类 号：P715.7[天文地球—海洋科学]