Open-Path Mid-Infrared Remote Sensing of Atmospheric Gases Using a Broadband Optical Parametric Oscillator

Intensity Simulation of a Fourier Transform Infrared Spectrometer

“…If parameter a 2 is obtained, the measured spectrum including non-linearity can be corrected by Equation (22). The explanation of the parameters are stated in the Table 1.…”

“…The result reveals that the BT error is 10 −3 in magnitude and the whole process is reliable. Equation (22) shows that the parameter a 2 is important in the process of non-linearity correction. The estimated accuracy of a 2 can affect the results of non-linearity correction.…”

“…Comparing the corrected spectrum with the input spectrum, we can see that the brightness temperature errors have a magnitude of 10 −3 K, and this fully proves the reliability and rationality of the whole simulation process. flux and multi-channels, has been developed in many fields, such as military reconnaissance [15,16], astrophysics research [17], geological resource exploration [18], and atmospheric monitoring [19][20][21][22][23][24][25].Interferogram is not only the direct result of the Michelson interferometer, but it is also the basis for obtaining the spectrum of the light source.FY-4A GIIRS is the first space-borne interferometer in geostationary orbit, and it measures the three-dimensional atmospheric structure through the interference of split light beams. Based on the FY-4A's success, the FY-4B satellite will be launched in 2020.…”