基于万山定标场验潮数据的HY-2B/C雷达高度计定标检验  

Research on Calibration and Validation of HY-2B/C Altimetry Data Based on Situ Gauge Data of Wanshan

作　　者：王建波 刘莫涵 宋焕宇 马超飞[3] 张宇飞 WANG Jianbo;LIU Mohan;SONG Huanyu;MA Chaofei;ZHANG Yufei(School of Marine Technology and Surveying,Jiangsu Ocean University,Lianyungang 222005,China;Key Laboratory of Marine Environment Detection Technology and Application,Ministry of Natural Resources,Guangzhou 510300,China;National Satellite Ocean Application Center,Beijing 100041,China)

机构地区：[1]江苏海洋大学海洋技术与测绘学院,江苏连云港222005 [2]自然资源部海洋环境探测技术与应用重点实验室,广东广州510300 [3]国家卫星海洋应用中心,北京100041

出　　处：《江苏海洋大学学报（自然科学版）》2023年第3期63-70,共8页Journal of Jiangsu Ocean University:Natural Science Edition

基　　金：自然资源部海洋环境探测技术与应用重点实验室开放基金课题(MESTA-2020-B006);江苏省高等学校大学生创新创业训练计划项目(SY202211641632009)。

摘　　要：对雷达高度计测高数据进行持续的定标检验是高度计数据应用的前提。基于珠海万山定标场3个沿岸验潮仪(外伶仃岛验潮仪、担杆岛验潮仪、直湾岛验潮仪)现场验潮数据,利用本研究所提方法,对HY-2B卫星2019年9月至2022年4月过境轨道375和HY-2C卫星2021年5月至2022年4月过境轨道170,172,185,187星下点海面高数据进行定标检验。结果发现:HY-2B卫星相对于3个验潮仪现场验潮数据的海面高偏差与文献的定标结果符合较好,证明所提方法是可靠的。HY-2C卫星过境轨道170(172)星下点相对3个验潮站的海面高偏差均在5 cm以内;HY-2C卫星过境轨道185(187)星下点相对3个验潮站的海面高偏差均在4 cm以内。对相同卫星的相同轨道,不同验潮站的检验结果存在差异,这可能与验潮站水位数据处理和位置归算有关。结果表明,HY-2卫星绝对海面高观测精度较好,可以满足科学研究对海洋高度计数据的应用需要。Continuous calibration and validation of the altimeter data is a prerequisite of their applications.Based on the data of three coastal on-site tide gauges(Wailingding Island,Dangan Island,and Zhiwan Island)at the Wanshan Calibration Field in Zhuhai,this paper analyzes the SSHs derived from transit trajectories of the HY-2B/C satellites from September 2019 to April 2022.The sub-satellite sea surface heights of the HY-2C transit orbit 170,172,185,and 187 and the HY-2B transit orbit 375 are evaluated by the method proposed in this paper.The experimental results show that the sea surface height deviations of the sub-satellite point of the HY-2B satellite are in good agreement with the results of literature calibration.The deviations of the sea surface height of the sub-satellite point of the HY-2C satellite 170(172)track relative to the three tide gauges are within 5 cm;the sea surface height deviations of the sub-satellite point of the HY-2C satellite 185(187)track relative to the three tide-gauge stations are within 4 cm.For one track of satellite,the calibration results of different tide stations are different,which may be related to the data processing of tide stations and location reduction errors.The results show that HY-2 satellites have good absolute sea surface precision,which can meet the needs of scientific research on the application of ocean altimeter data.

关 键 词：HY-2高度计 定标检验 验潮数据 海面高 

分 类 号：P715.6[天文地球—海洋科学]