摘要
SMOS卫星的唯一载荷MIRAS是一个二维综合孔径微波辐射计,具有72个接收机以及约5 000个数字相关单元,是目前在轨的最复杂的综合孔径微波辐射计。MIRAS在轨定标采用分步定标的方法,将系统采用不同的定标方法分别进行校正。文章首先介绍了MIRAS定标系统的组成,其次介绍了系统定标的方法,最后介绍了在轨定标的过程。
MIRAS(Microwave Imaging Radiometer by Aperture Synthesis),the only payload of SMOS(Soil Moister and Ocean Salinity),which is a 2-D aperture synthesis radiometer has 72 receivers and about 5000 digital correlation units and it is the most complex radiometer in orbit.The calibration of the MIRAS which is focused on different errors causing by different reasons uses the method step by step.Firstly,the paper introduces the composition of the calibration system.Secondly,the paper introduces the system calibration method.Finally,the process of the calibration is introduced.
出处
《空间电子技术》
2012年第2期20-25,36,共7页
Space Electronic Technology
关键词
SMOS
综合孔径
辐射计
定标
SMOS
Aperture synthesis
Radiometer
Calibration
