【摘要】：在彈光調(diào)制傅里葉變換光譜儀(PEM-FTS)中,為滿足實(shí)時干涉信號的高速采集與處理的要求,提出基于FPGA+DSP的硬件平臺實(shí)現(xiàn)方案。使用32位浮點(diǎn)型DSP芯片TMS320C6713的外部存儲器接口(EMIF)與FPGA連接,利用DSP的中斷、片選及讀寫使能信號作為判斷位與使能位,在FPGA端編寫狀態(tài)機(jī)來完成兩者之間的多路數(shù)據(jù)傳輸。在硬件DSP上采用非均勻快速傅里葉變換算法(NUFFT)完成數(shù)據(jù)的實(shí)時處理,對被測激光進(jìn)行光譜反演。實(shí)驗(yàn)結(jié)果表明,該方法可以實(shí)現(xiàn)FPGA與DSP之間的數(shù)據(jù)通信,NUFFT算法能快速準(zhǔn)確地反演出干涉信號的光譜信息。
[Abstract]:In order to meet the requirements of high-speed acquisition and processing of real-time interference signals in elastic-optical modulation Fourier transform spectrometer (PEM-FTS), a hardware platform implementation scheme based on FPGA DSP is proposed. The external memory interface (EMIF) of 32-bit floating-point DSP chip TMS320C6713 is connected to FPGA. The interrupt of DSP, chip selection, reading and writing enable signal are used as judgment bit and enable bit, and a state machine is written at FPGA to complete the multi-channel data transmission between the two. The non-uniform fast Fourier transform algorithm (NUFFT) is used to process the data in real time on the hardware DSP, and the spectral inversion of the measured laser is carried out. The experimental results show that the method can realize the data communication between FPGA and DSP, and the NUFFT algorithm can invert the spectral information of interference signal quickly and accurately.
【作者單位】： 中北大學(xué)山西省光電信息與儀器工程技術(shù)研究中心;
【基金】：國家自然科學(xué)基金青年科學(xué)基金項(xiàng)目(61505180) 山西省青年科技研究基金項(xiàng)目(2015021084;2014021012)
【分類號】：TH744.1
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本文編號：2474938