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首页> 外文会议>Signal and Data Processing of Small Targets 1996 >Impact of the SPIRIT III sensor design on algorithms for background removal object detection and point-source extraction
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Impact of the SPIRIT III sensor design on algorithms for background removal object detection and point-source extraction

机译：SPIRIT III传感器设计对背景去除目标检测和点源提取算法的影响

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Abstract: This paper describes background removal, point source detection, and position and irradiance extraction data processing algorithms that have been developed for the Spatial Infrared Imaging Telescope (SPIRIT) III design. The SPIRIT III sensor is the primary instrument on the Midcourse Space Experiment (MSX) satellite and is scheduled for launch in early 1996. The sensor consists of an off-axis reimaging telescope, and, among other instruments, a six-band scanning radiometer that covers the spectrum from midwave infrared to longwave infrared. The radiometer has five arsenic-doped silicon (Si:As) focal plane detector arrays with 8 $MUL 192 pixels. The angular separation between adjacent pixels is 90 $mu@rad. A single axis scan mirror can operate at a constant 0.46 deg/sec scan rate to give programmable fields of regard of 1 $MUL 0.75, 1 $MUL 1.5, and 1 $MUL 3 degrees or can remain fixed. Scanned images are non-uniformly sampled because of non-linear scan mirror motion, array misalignment, optical distortion, detector readout ordering, and satellite rotation. In addition, three of the five arrays contain multiple cross-scan aligned columns of pixels that five scanned images that have spatially overlapping in- scan data. Algorithms for processing data sampled on a uniform grid, such as data obtained from a CCD array, are enhanced and applied to the SPIRIT III radiometer where scanned images are non-uniformly sampled and have spatially overlapping data. The performance of these algorithms are evaluated with point source data acquired during ground measurements. !10
机译：摘要：本文介绍了为空间红外成像望远镜（SPIRIT）III设计开发的背景去除，点源检测以及位置和辐照度提取数据处理算法。 SPIRIT III传感器是中途空间实验（MSX）卫星上的主要仪器，计划于1996年初发射。该传感器包括离轴重成像望远镜，以及除其他仪器外的六波段扫描辐射计，涵盖从中波红外到长波红外的光谱。辐射计具有五个8个$ MUL 192像素的掺砷硅（Si：As）焦平面检测器阵列。相邻像素之间的角度间隔为90 $ mu @ rad。单轴扫描镜可以以恒定的0.46度/秒的扫描速率运行，以提供1°MUL 0.75、1 $ MUL 1.5和1 $ MUL 3度的可编程视场，或者可以保持不变。由于非线性扫描镜运动，阵列未对准，光学畸变，检测器读出顺序和卫星旋转，因此无法对扫描的图像进行均匀采样。另外，五个阵列中的三个包含多个交叉扫描对齐的像素列，该列像素具有空间重叠的扫描数据的五个扫描图像。改进了处理在统一网格上采样的数据的算法，例如从CCD阵列获得的数据，并将其应用于SPIRIT III辐射计，在该仪中，扫描的图像不均匀地采样并且具有空间重叠的数据。这些算法的性能通过在地面测量过程中获取的点源数据进行评估。 ！10

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