摘要
针对现有傅里叶变换红外光谱遥测技术响应速度慢、灵敏度低、抗震性差等缺点,提出一种基于静态固体斜楔干涉具为核心的傅里叶变换红外光谱遥测技术。选用UL04371-042型非制冷红外焦平面阵列探测器(UIRFPA)作为干涉信号探测的核心部件。在分析静态固体斜楔干涉具基础理论及探测器性能的基础上设计了驱动电路,FPGA作为时序控制的主体,在Xilinx ISE 12.4的开发环境中,利用Verilog硬件描述语言编程,对探测器的工作时序进行了设计输入和仿真验证。使得干涉信号通过高速AD采集,FPGA外扩的SRAM缓存,最后通过USB传送到上位机LABVIEW进行数据处理及成像。通过仿真和实验验证其可行性,实现了红外波段的静态固体斜楔干涉信号光谱成像,为进一步研究干涉型成像光谱仪成像技术提供前期准备。
Aiming at the slow response speed, low sensitivity, poor vibration resistance of existing Fourier transform infrared spectrum telemetry, a new method was put forward with static solid wedge interference as the core. UL 371-042-04 uncooled infrared focal plane array detector was selected as the core component of interference signal detection. Driving circuit was designed based on the analysis of the basic theory of static solid wedge interference and detector performance. FPGA as the main part of sequential control, designed input and verified simulation of the work timing of detector with Verilog hardware description language programming in Xilinx ISE 12.4 development environment. It can make the interference signal go through high-speed AD sampling and FPGA outside enlarge SRAM cache, the processed signals are sent to PC LABVIEW for data processing and imaging via USB finally. Kealized the infrared wavelengths of static solid wedge interference signal spectrum imaging by simulating and experimenting to verify its feasibility, provided preparation for further study of interferometric imaging spectrometer imaging technology.
出处
《红外与激光工程》
EI
CSCD
北大核心
2014年第10期3188-3192,共5页
Infrared and Laser Engineering
基金
国际科技合作项目(2013DFR10150)
国家自然科学基金仪器专项基金(61127015)
山西省国际科技合作项目(2010081038)
