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Computer-aided performance evaluation system for the on-board data compression system in HIRIS

机译:HIRIS车载数据压缩系统的计算机辅助性能评估系统

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Abstract: This paper describes a computer-aided performance evaluation system for testing and checking the on-board data compression system used in the High-Resolution Imaging Spectrometer (HIRIS). The earth resources spectra from the NASA earth resources spectral information system are taken for simulative spectra of ground objects, and these spectra are sampled and quantized according to the conditions and parameters of HIRIS. Then the simulative spectral data are put in a GIFOV spectral data generator through a computer interface. In testing, the spectral data stored in the generator are sent to the data compression system at the same rate of the readout clock of subdetectors in HIRIS. The data compression system compresses the input data in real-time under the control of the clock of the input data. After compressing, the compression results are returned to the computer through a bidirection interface and compared with the original ones. Finally, the computer gives out testing results. This kind of test system can exactly simulate the original data obtained by HIRIS in space, and objectively evaluate the data compression system.!
机译:摘要:本文介绍了一种计算机辅助性能评估系统,用于测试和检查高分辨率成像光谱仪(HIRIS)中使用的车载数据压缩系统。从美国宇航局地球资源光谱信息系统获取的地球资源光谱用作地面物体的模拟光谱,并根据HIRIS的条件和参数对这些光谱进行采样和量化。然后通过计算机接口将模拟光谱数据放入GIFOV光谱数据生成器中。在测试中,存储在发生器中的光谱数据将以HIRIS中子探测器的读出时钟的相同速率发送到数据压缩系统。数据压缩系统在输入数据的时钟的控制下实时压缩输入数据。压缩后,压缩结果通过双向接口返回到计算机,并与原始结果进行比较。最后,计算机给出测试结果。这种测试系统可以准确模拟HIRIS在太空中获得的原始数据,并客观地评估数据压缩系统。

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