全极化微波辐射计定标方法简述

A Brief of Calibration Methods for Fully Polarimetric Microwave Radiometers

辐射计精确定标是辐射计测量数据准确稳定的基础。针对全极化微波辐射计的定标需求,分析了全极化定标的特点和难点;介绍了已提出的全极化外定标方法、内定标方法和内外结合定标方法,分析了各种方法的优缺点;最后初步讨论了各种全极化定标方法星上应用的可行性。

Accurate calibration is the basis for radiometers to take accurate and stable measurements. According to the calibration demands of fully polarimetric radiometers, the characteristics and difficulties of fully polarimetric calibration are analyzed. Meanwhile, external calibration methods, internal calibration methods and combined calibration methods are introduced and the merits and demerits of the proposed methods are analyzed. Finally, the on-orbit application feasibility of different calibration methods is preliminarily discussed.