Abstract
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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