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A new remote sensing filter radiometer employing a Fabry-Perot etalon and a CCD camera for column measurements of methane in the Earth atmosphere

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3 Author(s)
Georgieva, E.M. ; Joint Center for Earth Syst. Technol. (JCET), UMBC, Baltimore, MD, USA ; Huang, W. ; Heaps, W.S.

A portable remote sensing system for precision column measurements of methane has been developed, built and tested at NASA GSFC. The sensor covers the spectral range from 1.636 μm to 1.646 μm, employs an air-gapped Fabry-Perot filter and a CCD camera and has a potential to operate from a variety of platforms. The detector is an XS-1.7-320 camera unit from Xenics Infrared solutions 1which combines an uncooled InGaAs detector array working up to 1.7 μm. Custom software was developed in addition to the graphical user basic interface X-Control provided by the company to help save and process the data. The technique and setup can be used to measure other trace gases in the atmosphere with minimal changes of the etalon and the prefilter. In this paper we describe the calibration of the system using several different approaches.

Published in:

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Date of Conference:

22-27 July 2012