The Aplications Of Remote Sensing FTIR Technology

The remote sensing Fourier Transform Infrared Spectroscopy (FTIR) technology is a branch of the analytical technique and has been developed rapidly in recent years. By detecting and analyzing the infrared electromagnetic, the FTIR technology has already been widely used for the quantitatively analysis and distinguish of the materials. In this paper, the applications of FTIR technology have been studied, the major content of this paper are the following:1. The response function varies not only with the frequency, but also with the signal amplitude received by the infrared instrument.The Bruker Tensor37 remote sensing FTIR was calibrated by the black body. Results show that the response function of InSb detector don't changed with the signal amplitude, the MCT detector's response function is increases with the increasing of the signal amplitude and then reaches a stable value. It is also found that the changes of the MCT detector's response function arose by signal frequency and signal amplitude has a degree of independence by measuring the response function with different signal frequency and signal amplitude. 2. A method of measuring the relative intensity of double wave band infrared laser based on the FTIR spectrometer. By measuring the response function of the spectrometer, the measured spectra of the CO2 and DF lasers are adjusted by the response function, and then compare with the result measured by the power meter. Experiment results show that the adjusted spectra of the two lasers matches well with the result that obtained by the power meter. 3. An experiment of measuring the solid's temperature behind hot gas by using FTIR spectrometer. Solid's radiation is continuous spectrum and the hot gas has the linear spectrum feature. By peeling off the linear spectrum from the mixed solid and hot gas spectrum, the temperature of the solid can be obtained accurately using the two band spectrum technology. The research also can be used on fire rescuing, battlefield environment inspecting and so on. 4. The temperature of internal and external flame of dichloroethane was calculated through fine structure of HCl and CO. The calculation of internal flame temperature was used both HCl and CO's fine structure and there is a vibration of 16K between those two calculated temperature. The temperature of external flame calculated by fine structure of HCl was 243K higher the internal flame.