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首页> 外文会议>Conference on Airborne Intelligence, Surveillance, Reconnaissance(ISR) Systems and Applications; 20040413-20040414; Orlando,FL; US >Sensor performance comparison of HyperSpecTIR instruments 1 and 2
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Sensor performance comparison of HyperSpecTIR instruments 1 and 2

机译：HyperSpecTIR仪器1和2的传感器性能比较

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摘要

SpecTIR Corporation has constructed a second copy of their HyperSpecTIR (HST) instrument, with modifications made to various mechanical, electrical, and optical systems. The first instrument (HST1) has been operating for several years aboard multiple platforms, and a sizable archive of imagery has been generated. Using this archive as a baseline, HST2 data have been evaluated to measure expected performance gains versus actual gains. The basic instrument specifications remain unchanged: 227 unique spectral channels from 450 - 2450nm with 8-12nm FWHM, 1 milliradian IFOV, 256 element cross-track scanning, up to 14 bit digitization, and beam steering optics for image stabilization. Notable changes in HST2 include AR coating of the SWIR FPA, miniaturization of the electronics, and integration of control and data processing computers within the sensor so that it may be used in a pod or UAV. Sufficiently clear data over a single study area does not exist, so data from the spectrally similar areas of Cuprite and Goldfield, Nevada are used to compare the performance of the two instruments. While AR coating of the SWIR focal plane and other improvements to HST2 have improved signal-to-noise performance, these gains are traded off for a shorter integration time allowing for faster and a greater volume of data collection. An attempt to objectively measure spectral image data quality using spectral similarity values and determining the inherent dimensionality of the data reveal similar spectral performance of the instruments under present operational modes.
机译：SpecTIR Corporation已构造了他们的HyperSpecTIR（HST）仪器的第二份副本，并对各种机械，电气和光学系统进行了修改。第一台仪器（HST1）在多个平台上已经运行了几年，并且已经生成了大量的图像档案。使用此归档文件作为基准，已经对HST2数据进行了评估，以衡量预期性能收益与实际收益的对比。仪器的基本规格保持不变：从450至2450nm的227个独特光谱通道，具有8-12nm的FWHM，1毫弧度IFOV，256个元素的跨轨扫描，高达14位数字化，以及用于图像稳定的光束控制光学器件。 HST2的显着变化包括SWIR FPA的增透膜，电子设备的小型化以及传感器内控制和数据处理计算机的集成，因此可以在吊舱或无人机中使用。由于没有单个研究区域的足够清晰的数据，因此使用内华达州Cuprite和Goldfield光谱相似区域的数据来比较这两种仪器的性能。尽管SWIR焦平面的AR涂层和对HST2的其他改进都改善了信噪比性能，但这些增益需要以较短的积分时间进行权衡，从而可以更快，更大地收集数据。尝试使用光谱相似度值客观地测量光谱图像数据质量并确定数据的固有维数，揭示了在当前操作模式下仪器的相似光谱性能。

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