论文部分内容阅读
为实现高信噪比、高光谱分辨率的光谱探测性能,在时间调制型傅里叶变换光谱仪中,需要控制反射镜往复精密摆动,完成干涉光程差的均匀扫描调制。首先分析了光谱探测性能对光程扫描控制性能要求间的关系;在此基础上,针对星载干涉仪对光程差扫描的高性能要求,给出了一种基于极点匹配的控制器设计方法。该方法借助于状态反馈设计结果,采用易于工程应用的前项和前馈环节加以有效实现,简化了控制器的设计与实现难度。通过仿真试验,验证了该方法的有效性。
In order to realize the spectral detection performance of high signal-to-noise ratio and hyperspectral resolution, in the time-modulated Fourier transform spectrometer, it is necessary to control the reciprocating precision of the reflecting mirror to complete the uniform scanning modulation of the interference optical path difference. Firstly, the relationship between spectral detection performance and optical scanning performance was analyzed. On the basis of this, aiming at the high performance requirement of optical path difference scanning by spaceborne interferometer, a controller design method based on pole matching . The method is based on state feedback design results and is implemented effectively with the preceding and feedforward components that are easy to implement. This simplifies the design and implementation of the controller. The simulation results show the effectiveness of the method.