Error Propagation in Calibration Networks of Synthetic Aperture Radiometers

被引：3
|
作者：
Kainulainen, Juha [1 ]
Lemmetyinen, Juha [1 ]
Rautiainen, Kimmo [1 ]
Colliander, Andreas [2 ]
Uusitalo, Josu [3 ]
Lahtinen, Janne [3 ]
机构：
[1] Aalto Univ, Dept Radio Sci & Engn, Espoo 02015, Finland
[2] European Space Agcy, European Space Res & Technol Ctr, NL-2200 AG Noordwijk, Netherlands
[3] Harp Technol Ltd, Espoo 02150, Finland
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2009年 / 47卷 / 09期
关键词：
Calibration; interferometer; radiometry; SMOS; IMAGES; NOISE;
D O I：
10.1109/TGRS.2009.2017016
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
During the last two decades, the development of synthetic aperture radiometers for remote sensing has been studied intensively. One of the proposed methods for the calibration of such an instrument is the application of a distributed noise injection network. This paper focuses on the origin and effect of errors arising from this methodology. A generalized analytical method to calculate the accumulation of phase and amplitude errors in a distributed noise injection network is presented. This method is then applied to the Microwave Imaging Radiometer using Aperture Synthesis (MIRAS), the interferometric radiometer aboard the European Soil Moisture and Ocean Salinity satellite. The effect of the resulting errors to MIRAS' brightness temperature is analyzed. The presented method is applicable also to other interferometric radiometers, whose calibration relies on distributed noise injection.
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页码：3140 / 3150
页数：11
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