GNSS大气海洋遥感技术研究进展

Research progress of GNSS atmosphere-ocean remote sensing technology

全球卫星导航系统(GNSS)信号资源的大气海洋遥感技术一直是一个研究热点.伴随着GNSS系统的建设和发展,相继出现了利用GNSS延迟信号、反射信号、掩星信号、极化信号获取大气和海洋环境参数的一系列新技术新方法.在回顾GNSS大气海洋遥感技术概况的基础上,先后概述了GNSS延迟信号(GNSS-D)技术、GNSS反射测量(GNSS-R)技术、GNSS无线电掩星(GNSS-RO)技术、GNSS极化掩星(GNSS-PRO)技术的基本原理,比较全面系统地分析了其国内外研究和应用方面的现状及最新进展,特别是新兴GNSS-PRO技术的机理、优势及发展现状.最后对该研究领域的发展前景进行了一些探讨,相关技术的突破和发展必将在气象、水文、海洋、陆地、空间环境等地球科学领域发挥越来越重要的作用.

The atmosphere-ocean remote sensing technology of fully mining Global Navigation Satellite Systems(GNSS)signal resources has always been a research hotspot.With the construction and development of GNSS,a series of novel technologies and methods to obtain the parameters of atmospheric and oceanic environment by GNSS delayed signals,reflected signals,occultation signals and polarimetric signals have appeared successively.In this paper,the principles of GNSS delay(GNSS-D),GNSS reflectometry(GNSS-R),GNSS radio-occultation(GNSS-RO)and GNSS Polarimetric radio-occultation(GNSS-PRO)technologies are respectively summarized on the basis of reviewing the general situation of GNSS atmosphere-ocean remote sensing technology.The progress of their research are also illustrated comprehensively and systematically,especially the mechanism,advantages and status of emerging GNSS-PRO technology.Finally,the development prospect of this field is discussed.The breakthrough and development of related technologies will play an increasingly important role in the earth science fields such as meteorology,hydrology,ocean,land and space environment.