基于FPGA的傅里叶变换成像光谱仪实时数据处理系统研究

项目名称： 基于FPGA的傅里叶变换成像光谱仪实时数据处理系统研究

项目编号： No.61265006

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 殷世民

作者单位： 桂林电子科技大学

项目金额： 48万元

中文摘要： 干涉式成像光谱技术是一类新型的多维信息获取技术，它能够获得被探测目标的空间与光谱信息，在民用及军事等领域都具有十分广泛的应用。目前，干涉式成像光谱仪系统通常都是在前期实时获取目标的干涉图信息并将之存储，后期再对干涉图信息进行复原处理以获得目标的光谱信息。这种工作方式固然有其优点，但对军事侦查等实时应用场合显得过于迟缓。现代FPGA器件体积小、容量大、速度高，较传统DSP处理技术相比，具有开发周期短、可在线编程和修改等优点。本项目拟研究一种基于FPGA器件的傅立叶变换成像光谱仪实时数据处理系统，它将干涉成像光谱仪非均匀性校正与光谱复原算法集成在一个FPGA芯片内，适用于可见光与红外两种类型光谱仪系统，以流水线方式运行，能够实时输出目标的光谱信息，具有体积小、功耗低、运算速度快及在线修改等优点，可为我国研制具有自主知识产权的实时光谱处理专用芯片及基于光谱的目标实时识别与应用奠定良好的技术基础。

中文关键词： FPGA；傅里叶变换成像光谱仪；实时数据处理；非均匀性在线定标与校正；光谱复原

英文摘要： Interferential imaging spectrometer is a new kind of technology to obtain multidimensional information. It can acquire the spatial and spectral information of detected aims and has very extensive use in civilian and military applications etc. Now the work of interferential imaging spectrometer is commonly firstly acqiring and storing the aim's real-time interferogram and then rebuild its spectrum from the interferogram by using Fourier transform in the future. This work pattern has indeed a lots of excellence, but it is too delayed to the real time application fields such as military use etc. Nowadays, compared with traditional DSP technology the FPGA (field-programmable gate array) devices have many specialities such as small cubage, large capacitance, high speed, short exploitation period and in system programmable ability. In this item a new sort of real-time data processing system of interferential imaging spectrometer should be studied out based on FPGA device. The system can integrate both nonuniformity correction and spectrum rebuilding arithmetics of interferential imaging spectrometer on a single FPGA chip and is suit for the use of visible light and infrared Fourier transform imaging spectrometer. It is running in pipeline mode and can export aim's spectrum in real time with some advantages such as sma

英文关键词： Field-programable gate array；Fourier transform imaging spectrometer；Real-time data processing；Nonuniformity online calibration and correction；Spectrum recovering