Volume 6 Issue 4
Aug.  2013
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ZHAO Hui-jie, SONG Wang-yang, ZHANG Ying, ZHAO Feng, CHENG Xuan. Real-time pre-processing system of AOTF imaging spectrometer[J]. Chinese Optics, 2013, 6(4): 577-583. doi: 10.3788/CO.20130604.0577
Citation: ZHAO Hui-jie, SONG Wang-yang, ZHANG Ying, ZHAO Feng, CHENG Xuan. Real-time pre-processing system of AOTF imaging spectrometer[J]. Chinese Optics, 2013, 6(4): 577-583. doi: 10.3788/CO.20130604.0577

Real-time pre-processing system of AOTF imaging spectrometer

doi: 10.3788/CO.20130604.0577
  • Received Date: 11 Mar 2013
  • Rev Recd Date: 13 May 2013
  • Publish Date: 10 Aug 2013
  • In order to realize the rapid and real-time data pre-processing of an imaging spectrometer based on Acousto-optic Tunable Filter(AOTF), the data characteristics and a pre-processing algorithm of the imaging spectrometer based on AOTF were analyzed. Then, a scheme of dual Digital Signal Processor(DSP) parallel processing system based on two chips of ADSP-TS201 coupled the external bus sharing and the link ports was proposed by using DSP instead of the traditional computer processing platform as the key device. Proceeding from practical requests, a pipeline processing was designed, pre-processing tasks were allocated rationally, and the functional verification was implemented. The practical application shows that it takes 23.5 ms to accomplish the pre-processing task for one frame data of imaging spectrometer based on AOTF, which increases 13 times than that of PC and meets the real-time requirement. The system proposed in this paper promotes the development of systematism, modularization, miniaturization and the capability of real-time processing of the imaging spectrometer based on the AOTF.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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