A PRELIMINARY IN SITU CALIBRATION FOR HY-2A SATELLITE ALTIMETER

被引：1

作者：

Liu, Yalong ^{[1
]}

Xu, Ke ^{[2
]}

Song, Yang ^{[1
]}

Zhang, Youguang ^{[3
]}

机构：

[1] State Ocean Adm, Yantai Marine Environm Monitoring Ctr Stn, Yantai, Peoples R China

[2] Chinese Acad Sci, Natl Space Sci Ctr, CAS Key Lab Microwave Remote Sensing, Beijing, Peoples R China

[3] Natl Satellite Ocean Applicat Serv, Beijing, Peoples R China

来源：

2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2016年

关键词：

HY-2A altimeter; absolute Calibration; Sea level; TOPEX/POSEIDON; JASON-1;

D O I：

10.1109/IGARSS.2016.7730523

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Since the launch, HY-2A has observing global ocean dynamic environment data over the last 5 years including sea surface height (SSH), significant wave height (SWH) and corresponding auxiliary data (wind fields and water vapor). The in-orbit validation and crossover comparison of which suggest that the various technical indicators cater for basic needs in practicality. However, for the most important ocean dynamic environment parameter SSH, the accurate, reliable and standard processing for absolute calibration has not achieved yet, significantly limiting quantitative application of altimetry production. To evaluate the accuracy of HY-2A, we perform absolute calibration at California offshore Harvest Oil Platform. HY-2A interim geophysical dataset records ( IGDR) are used to perform comparison. All corrections are estimated independently avoiding instruments aging. According to results, there are two significant linear trends for HY-2A derived SSHs consisting of -0.001083m/day for cycle 1 similar to 99 and 0.001475m/day afterward. The results indicate that HY-2A observations are low by -40.5 +/- 1.2 cm.

引用

页码：5831 / 5834

页数：4

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