| 基于FPGA的傅里叶变换光谱仪光谱复原技术 |
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| 引用本文： | 郝健,张记龙,崔丹凤,景宁. 基于FPGA的傅里叶变换光谱仪光谱复原技术[J]. 激光技术, 2011, 35(6): 804-807. DOI: 10.3969/j.issn.1001-3806.2011.06.022 |
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| 作者姓名： | 郝健 张记龙 崔丹凤 景宁 |
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| 作者单位： | 1.中北大学山西省光电信息与仪器工程技术研究中心, 太原 030051; |
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| 基金项目： | 国家自然科学基金，科技部国际合作计划资助项目，山西省国际科技合作计划资助项目 |
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| 摘 要： | 为了实时获取化学战剂、大气污染物等待测物的光谱信息,设计了一种基于现场可编程门阵列实现单边干涉图光谱复原的高速数据处理系统。该系统采用将去直流、切趾,快速傅里叶变换、相位校正等光谱复原处理集成在一块现场可编程门阵列芯片内实现的方法,具有集成度高、速度快、成本低等优点。在ISE10.1开发平台上设计了数据处理系统硬件电路,通过WQF-520型傅里叶变换红外光谱仪采集干涉数据传给现场可编程门阵列进行处理,实验结果与MATLAB仿真结果比较,相对误差在1.2%以内。结果表明,该系统可正确复原光谱,适用于时间调制和空间调制的干涉式光谱仪系统。
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| 关 键 词： | 光谱学 干涉条纹 频谱复原 现场可编程门阵列 |
| 收稿时间： | 2011-01-19 |
Spectrum recovery of Fourier transform spectrometer based on FPGA |
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| HAO Jian,ZHANG Ji-long,CUI Dan-feng,JING Ning. Spectrum recovery of Fourier transform spectrometer based on FPGA[J]. Laser Technology, 2011, 35(6): 804-807. DOI: 10.3969/j.issn.1001-3806.2011.06.022 |
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| Authors: | HAO Jian ZHANG Ji-long CUI Dan-feng JING Ning |
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| Abstract: | In order to obtain the real-time spectrum distribution information of such as chemical warfare, atmospheric pollutants by Fourier transform spectrometer, a data processing system, which can realize the single sideband interference fringes collection and spectrum recovery, was designed based on field pragrammable gate array(FPGA). In the system, apodization, fast Fourier transform(FFT), and phase correction was integrated in a FPGA chip with the advantages of high integration, high speed and low cost. The XC2VP30 chip of Xilinx's corporation was used to design the data processing module hardware circuit. Then the data collected by WQF-520 Fourier transform infrared spectrometer was transferred to FPGA for processing. Comparing the FPGA results with Matlab simulation results, the difference is within 1.2%. The results show that the system can recover spectrum correctly and is suitable for the interferometric spectrometer system of time modulation and space modulation. |
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