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Based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) and the feature of Vertical Cavity Surface Emitting Laser (VCSEL) which wavelength scanning range up to several nanometers, the methane sensor system was designed. To verify the characteristic of anti-cross interference, we made some spectroscopy stimulation and experiments to analyze the affects to the methane measurement results of the...
A numerical model of a water medium, which contains volumetric particles has been developed. This model is designed for calculating the optical radiation extinction, absorption, scattering, and transmission function. All calculations of optical characteristics are based on the Mie theory. The calculated values of the extinction coefficient and transmission function in the visible and IR ranges can...
In this paper, we present the objectives and features of the payload subsystem of SNSAT, the nanosatellite which is to be launched by SathyabamaUniversity in near future. The payload comprises of the spectrometer and its interface, with the prime aim to detect the concentration of five major constitutes green house gases namely, Carbon Dioxide, Water, Carbon Monoxide, Methane and Hydrogen Fluoride...
Progress on the development of a differential radiometer based upon the Fabry-Perot interferometer (FPI) for methane (CH4), water vapor (H2O) and formaldehyde (CH2O) detection in the atmosphere of Mars is presented. The proposed FPI based instrument is designed to make absorption measurements of trace gases in the Martian atmosphere. The measurements can be made from a satellite platform using nadir...
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