Global Navigation Satellite System (GNSS), has a significant impact on all areas of human activity, not only can provide users with shared global navigation, position and timing information, but also can provide a L-band microwave signal source of long term stability and high temporal-spatial resolution. In recent years, development of the navigation satellite remote sensing applications using GNSS as a external illuminator, it has been forming a new Global Navigation Satellite System METeorology (GNSS/MET), of which Global Navigation Satellite System-Reflection (GNSS-R) signals remote sensing technology is rising. It could be considered as a non-cooperative artificial illuminator, bistatic (multi-static) radar system, and has the advantages of both passive and active remote sensing. Then it gets more and more people’s attention and favor, and broadening into Atmosphere-ocean and land surface remote sensing fields. However, the address of this technology is very messy at home and abroad, and not able to accurately express its special meaning. This article attempts to give a new term:Exogenous-Aided Remote Sensing (EARS) for discussion.%全球导航卫星系统(GNSS)不仅能够为空间信息用户提供全球共享的导航定位信息、测速、授时等功能，还可以提供长期稳定、高时间和高空间分辨率的L波段微波信号源。近年来利用其作为外辐射源的遥感探测技术，形成了一门新的全球导航卫星系统气象学(GNSS/MET)，其中GNSS-R反射信号遥感技术的兴起和发展格外引人注目。这是一种介于被动遥感与主动遥感之间的新型遥感探测技术，可以看作为是一个非合作人工辐射源、收发分置多发单收的多基地L波段雷达系统，从而兼有主动遥感和被动遥感两者的优点，越来越受到人们的关注和青睐，先后开展了许多利用GNSS系统进行大气海洋陆面遥感等领域研究工作。该文系统介绍了GNSS-R遥感技术的研究现状和发展趋势，并针对该技术给出了一个新的概念“外源助动遥感(Exogenous-Aided Remote Sensing, EARS)”。
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