电子科技大学学报2025，Vol.54Issue(2)：280-287,8.DOI:10.12178/1001-0548.2024005
星载高光谱微波辐射计大气温度廓线反演的仿真与分析
Simulation and analysis of atmospheric temperature profiles retrieval using spaceborne hyperspectral microwave radiometer
宫珣 1童玲 1高博 1王培丞 1高鑫宜1
作者信息
- 1. 电子科技大学自动化工程学院,成都 611731
- 折叠
摘要
Abstract
Compared with traditional radiometers,hyperspectral microwave radiometers have significantly increased the number of channels and can obtain continuous and high-frequency resolution brightness temperature detection results.However,due to issues such as channel correlation and reduced sensitivity after channel subdivision,further theoretical research is needed to support the improvement of hyperspectral microwave remote sensing capabilities.In view of issues above and the fact that there is no on-orbit hyperspectral microwave radiometer for Earth observation at present,a platform for brightness temperature simulation and atmospheric temperature profile retrieval analysis of spaceborne hyperspectral microwave radiometer is built.This platform simulates the brightness temperature detected by spaceborne hyperspectral microwave radiometer based on radiation transfer theory and atmospheric microwave gas absorption coefficient model,and constructs and trains an inversion model based on neural network algorithm using the simulated data.The brightness temperature observed in the oxygen absorption band of 50 GHz to 70 GHz and the retrieval results of atmospheric temperature profile are analyzed based on this platform,and the observation brightness temperature,weighting function and statistical errors of retrieval results under different channel numbers are compared.The experimental results show that the hyperspectral microwave radiometer can improve the remote sensing detection accuracy of atmospheric temperature profiles in various pressure layers,especially for the high-altitude atmospheric temperature profile.关键词
高光谱/微波辐射计/大气温度廓线/神经网络/对地观测Key words
hyperspectral/microwave radiometer/atmospheric temperature profiles/neural network/Earth observation分类
信息技术与安全科学引用本文复制引用
宫珣,童玲,高博,王培丞,高鑫宜..星载高光谱微波辐射计大气温度廓线反演的仿真与分析[J].电子科技大学学报,2025,54(2):280-287,8.
