中法海洋卫星微波散射计真实性检验技术体系构建
Validation technology for CSCAT:system construction
穆博 1郎姝燕 1卫然 1孙从容 1Deborah Hazan2
作者信息
- 1. 国家卫星海洋应用中心,北京 100081;自然资源部空间海洋遥感与应用重点实验室,北京 100081
- 2. 法国国家空间研究中心,法国图卢兹31401
- 折叠
摘要
中法海洋卫星(China-France Oceanography SATellite,CFOSAT)是国际首次用于联合探测海面风场和波浪谱的科学观测卫星,搭载的微波散射计(CFOSAT SCATterometer,CSCAT)是国际上首次采用扇形波束旋转扫描体制的星载微波散射计,相比笔形波束旋转扫描体制,这种新体制可以实现海表同一面元的多入射角观测,观测样本数相比笔形波束体制更多,因而具备更高精度海面风场的观测能力.基于CSCAT产品业务化真实性检验相关工作的总结基础,结合卫星管理部门对卫星遥感产品检验体系的认识,针对CSCAT的载荷特性,提出一种卫星管理部门、数据用户、科研学者三方相互协作的、业务化评估和科学评估相结合的风场产品真实性检验技术体系,有助于卫星遥感产品的质量提升和观测技术及检验技术的发展.此外,面向业务化的检验技术体系有助于全面地、系统性地评价与监测CSCAT载荷的测量性能,支撑载荷性能优化以及反演算法改进;同时也可以帮助CSCAT产品用户更全面地了解其海面风场产品的精度特性,促进CSCAT海面风场产品的定量化应用.
Abstract
The China-France Oceanography SATellite(CFOSAT)firstly makes joint observations of ocean surface wind vector and wave spectrum in the world.The CFOSAT SCATterometer(CSCAT)onboard adopts a new observation scheme of Ku-band fan-beam rotary scanning system,and can measure more incidence angles of the same wind vector cell and obtain more observation samples in contrast with the pencil-beam rotary scanning system.So,CSCAT could improve the wind product precision.Based on the summary of the work related to the operational-oriented validation of CSCAT and the satellite management department's understanding of the validation system for satellite remote sensing products,a validation technology system for CSCAT wind products is presented in terms of CSCAT's loading characteristics.The system,including operational-oriented evaluation and scientific-oriented evaluation,is jointly implemented by the satellite management department,data users,and scientific researchers,which helps improving the quality of satellite remote sensing products and the development of observation and validation technologies.Also,the operational-oriented technology system is helpful to comprehensively and systematically evaluate and monitor the measurement performance of CSCAT,and could support for optimizing the instrument's performance and improving the wind retrieval algorithm.At the same time,the validation technology system can also help CSCAT product users to more comprehensively understand the accuracy characteristics of wind field products and promote the quantitative application of CSCAT wind field products.
关键词
中法海洋卫星(CFOSAT)/微波散射计/中法散射计(CSCAT)/海面风场/真实性检验Key words
China-France Oceanography SATellite(CFOSAT)/microwave scatterometer/CFOSAT SCATterometer(CSCAT)/sea surface wind field/validation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据