基于Jason-3和GNSS浮标的HY-2B测高数据质量分析  

Quality analysis of HY-2B altimetry data based on Jason-3 and GNSS buoys

作　　者：毛万里 MAO Wanli(Guangzhou Quancheng Duowei Information Technology Limited Company,Guangzhou,Guangdong 511457,China)

机构地区：[1]广州全成多维信息技术有限公司,广东广州511457

出　　处：《北京测绘》2025年第1期111-115,共5页Beijing Surveying and Mapping

基　　金：广东省科技计划(2021B1212100003)。

摘　　要：本研究针对我国海洋二号B(HY-2B)卫星的测高数据质量评估问题,综合利用同期的杰森3号(Jason-3)卫星和全球导航卫星系统(GNSS)浮标的测高数据,采用了交叉点相对定标与GNSS浮标绝对定标两种方法,对HY-2B卫星测高数据进行了全面的质量评估。结果表明,HY-2B卫星数据的完整性为95.97%,其中第115周期的数据缺失最为显著,平均数据编辑比例达到6.01%。HY-2B卫星在自交叉点与互交叉点的海面高度异常差值分析中显示其数据质量良好,自交叉点海面高异常差值的平均值为0.02 mm,标准差为42.3 mm;互交叉点海面高异常差值的平均值为-4.4 mm,标准差为53.9 mm。此外,与GNSS浮标观测的海面高相比,HY-2B卫星测得的海面高差值在5.3~3.8 cm,表明其测高精度较高。综合以上分析,HY-2B卫星测高数据的完整性、有效性及精度均达到了较高水平,为海洋学、气候变化研究及相关领域提供了可靠数据支持,证明了其在全球海平面监测与研究中的应用价值。This paper analyzed the quality evaluation of altimetry data from China’s HaiYang-2B(HY-2B)satellite.It used concurrent altimetry data from the Jason-3 satellite and global navigation satellite system(GNSS)buoys,employed relative calibration of crossover points and absolute calibration of GNSS buoys,and conducted a comparative quality evaluation of altimetry data of HY-2B satellite.The results indicate that the data integrity of the HY-2B satellite is 95.97%,with the 115th cycle exhibiting the most significant data loss,where the average data editing ratio reaches 6.01%.The analysis of sea surface height anomaly differences at both self-crossover points and mutual crossover points indicates good data quality of the HY-2B satellite.The average value of sea surface height anomaly differences at self-crossover points is 0.02 mm,with a standard deviation of 42.3 mm;at mutual crossover points,the average value of sea surface height anomaly differences is-4.4 mm,with a standard deviation of 53.9 mm.Furthermore,compared to sea surface heights observed by GNSS buoys,the sea surface height difference measured by the HY-2B satellite ranges from 5.3 cm to 3.8 cm,demonstrating high altimetry data accuracy.In conclusion,the integrity,effectiveness,and accuracy of the HY-2B satellite altimetry data reach a high level,providing reliable data support for oceanography,climate change research,and related fields,thereby proving its application value in global sea level monitoring and research.

关 键 词：海洋二号B(HY-2B)卫星 交叉点 全球导航卫星系统(GNSS)浮标 海面高异常 数据质量 

分 类 号：P228.3[天文地球—大地测量学与测量工程]