The use of the Fabry-Perot interferometer for high resolution microwave spectroscopy

A simple Fabry-Perot interferometer was used for measurements of microwave spectra. Both basic experimental arrangements, absorption and emission, were tested on the rotational spectra of acetonitrile. The interferometric results obtained were compared with the spectra measured using a standard high resolution microwave spectrometer.     

Novel Micro Fourier Transform Spectrometers

The miniaturization of spectrometer opens a new application area with real-time and on-site measurements. The Fourier transform spectrometer （FTS） is much attractive considering its particular advantages among the approaches. This paper reviews the current status of micro FTS in worldwide and describes its developments; In addition, analyzed are the key problems in designing and fabricating FTS to be settled during the miniaturization. Finally, a novel model of micro FTS with no moving parts is proposed and analyzed, which may provide new concepts for the design of spectrometers.     

污染云团红外被动遥感与自动鉴别报警系统

已研制完成了一套被动红外污染云团遥感报警系统。由加装了分步扫描望远系统的富里叶变换干涉光谱仪（ＦＴＳ）、光谱自动鉴别器（高速数字化信号处理器）和控制计算机构成。在总控程序管理下，系统以并行流水作业方式运行。结果证明：系统有高灵敏度、高正确鉴别率、极低虚警率和运行正确稳定的特点。     

基于HLA的飞行模拟器的研究

根据当前的仿真技术发展和面临的飞行训练模拟器实际需求,提出并设计了基于HLA（High Level Architecture）的飞行训练模拟器的体系结构,并对各联邦成员的构成开发过程及其关键技术进行了研究,包括HLA基于FEDEP（Federation Development and Execution Process）模式的开发过程、关键联邦成员和基于虚拟现实技术的三维视景联邦成员的实现等,最后阐明了该模拟器的实用性。     

Cryogenic instrumentation and detector limits in FTS

The desire to measure atmospheric emission spectra of the upper atmosphere has led to the development of cryogenically cooled infrared Fourier transform spectrometers. These spectrometers combine the sensitivity advantage of a Fourier transform spectrometer with the sensitivity gains obtainable with modern infrared detectors operated at low photon backgrounds. The temperature required to obtain maximum sensitivity is primarily determined by the wavelength region of interest, longer wavelengths requiring lower temperatures. In order to take full advantage of reduced background operation, the preamplifier must be cooled in order to reduce the noise. Low noise preamplifiers capable of operation down to liquid helium temperatures have been developed. Three cryogenically cooled spectrometers of significantly different design are discussed. The first instrument is a standard Michelson interferometer cooled to 10 K with supercritical helium and capable of 1 wave number resolution. This interferometer has been successfully flown on a rocket and obtained measurements of atmospheric limb emission at tangent altitudes from 70 km to 150 km. The second is a field widened prism interferometer which operates at liquid nitrogen temperature and has been flown on a rocket and obtained measurements of atmospheric emission in the 2 to 8 micrometer region during an aurora. The third is a balloon borne liquid nitrogen cooled interferometer which incorporates cat's eye retroreflectors for end mirrors and is capable of 0.1 wave number resolution. This spectrometer has successfully flown on a balloon several times and obtained measurements of atmospheric limb emission at tangent altitudes from 0 km to 30 km.     

Wollaston棱镜阵列干涉光谱仪的研制及其光通量的分析

利用空间调制干涉光谱技术研制了基于双层Wollaston棱镜组的干涉仪原理样机,用该样机进行了干涉光谱实验,采集了He-Ne激光器干涉图像,通过对图像进行数据处理,获得了光源的归一化光谱图。并对样机系统做了光通量分析。它与传统的使用单个Wollaston棱镜测量光谱的方法相比,光谱分辨率和光通量可以提高一倍以上。