基于SWIM、SCAT联合观测小卫星的总体设计要点

海洋对全球气候、气象、环境和经济发挥着重要作用,因此,有必要对其进行监测、研究及预测发生在海洋内部和海洋表面的运动过程。海面风场信息、海面波浪谱信息能够体现并反演海洋气象、海洋动力学特性、海洋资源、海洋污染情况、海洋经济性和海岸环境。波谱仪(SWIM,Surface Wind Investigation and Monitoring)和微波散射计(SCAT,Scatterometer )可以用于获取海面波浪谱信息和海面风场信息。首先对这两套载荷系统进行了介绍,并简要对基于这类主动微波遥感载荷配置的卫星设计进行了任务分析,最后给出了基于波谱仪、微波散射计联合使用在小卫星平台应用背景下卫星系统级设计的几个主要方面进行了研究和分析。

Mission Analysis base on SWIM and SCAT Joint Observation Satellite

It is well\|known that ocean covers 70% of the globe which play a fundamental role in climate,meteorology,environment,economy.Therefore,there is a need to monitor,understand and predict all the processes that occur in the ocean and its surface.In particular,wind and surface waves are key parameters which affect the marine meteorology,ocean dynamics,marine resources,pollution,economy,coastal environment.To investigate the wind and surface wave of ocean,a wave spectrometer (SWIM:Surface Waves Investigation and Monitoring) and a scatterometer (SCAT) were proposed to measure ocean winds and waves.This paper presents the introduction of these two payloads,SWIM and SCAT,to built a small satellite for the above mentioned purposes.Based on the mission analysis for the design of this kind of active microwave satellite,it demonstrats the key aspects for the system design,engineering feasibility and validation methods which is dedicated for this small satellite with this combination application of SWIM and SCAT instrument to reach the mission requirements of this project.