Retrieval of atmospheric parameters by radiometer at frequency of terahertz

Jiang-man Li; Li-xin Guo; Le-Ke Lin; Hai-ying Li; Yi-yang Zhao; Ting-ting Shu; Xian-hai Cheng

doi:10.1117/12.2034098

23 August 2013 Retrieval of atmospheric parameters by radiometer at frequency of terahertz

Jiang-man Li, Li-xin Guo, Le-Ke Lin, Hai-ying Li, Yi-yang Zhao, Ting-ting Shu, Xian-hai Cheng

Proceedings Volume 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications; 89090R (2013) https://doi.org/10.1117/12.2034098
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

There has been intense interest in the use of millimeter wave and terahertz technology for the detection of weapons, explosives and other threats. System based on electromagnetic radiation between 30 GHz and 3 THz have advantages that radiation penetrates many common materials, wavelengths are short enough to give adequate spatial resolution and radiation at these frequencies is safe to use on people. It is also applied to the retrieval of tropospheric parameters with the ground-based radiometer system. Tropospheric temperature, humidity and cloud liquid water are key elements in meteorology. Since the 151 GHz channel strongly depends on cloud liquid water, the retrieval accuracy of atmospheric parameters is improved by the inclusion of a channel at 151 GHz. The new retrieval model which uses 123 GHz, 127 GHz and 168 GHz is proposed. Simulations of retrieval are presented based on the radiosonde dataset of Beijing China and the retrieving errors of different methods are compared.

Citation Download Citation

Jiang-man Li, Li-xin Guo, Le-Ke Lin, Hai-ying Li, Yi-yang Zhao, Ting-ting Shu, and Xian-hai Cheng "Retrieval of atmospheric parameters by radiometer at frequency of terahertz", Proc. SPIE 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications, 89090R (23 August 2013); https://doi.org/10.1117/12.2034098

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