纯转动拉曼光电雷达系统单色仪的设计与调试方法研究

纯转动拉曼光电雷达系统通过接收和分析与大气分子相互作用后产生的特定量子数的拉曼回波信号反演出温度,然而拉曼位移很小且信号又很微弱,要从复杂的回波信号中分离出我们所需要拉曼信号必须用一个高精度的单色仪.本文介绍了高精度、高光谱分辨双光栅单色仪的一种设计方案,对闪耀光栅做了一系列模拟计算,对5级和6级闪耀分别做了对比,分析表明选择第6级闪耀最为合理;其精度能够很好的满足实际测量要求.

Design and Debug Method of Monochromator in Pure Rotational Photoelectrical Radar

Pure retational photoelectric radar acquires the temperature profile of atomosphere reversely by analy zing the special raman spectra. However, raman speeera displacement is very small and the raman signal is low. Therefore in order to achieve the raman specera demanded from the complicated echo signals, it is very importmant to use the double grating monochromator. In this paper, a design proposal of high precision and high spectral resolution double grating monochromator was presented, and some analog calculation for the diffraction ot the blazed grating was done. The result showed that the optimal blazed arder was 6th. The proposed method has high precision and is satisfactorily applied to the real measure.