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首页> 外文会议>Conference on Image and Signal Processing for Remote Sensing VIII, Sep 24-27, 2002, Agia Pelagia, Crete, Greece >Global earth mapping with NASA's Multi-angle Imaging SpectroRadiometer (MISR)
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Global earth mapping with NASA's Multi-angle Imaging SpectroRadiometer (MISR)

机译：使用NASA的多角度成像光谱辐射仪（MISR）进行全球地球测绘

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摘要

The Multi-angle Imaging SpectroRadiometer (MISR) is a part of the payload for NASA's Terra spacecraft launched in December 1999. The MISR instrument continuously acquires a systematic, global, multi-angle imagery in reflected sunlight in order to support and improve studies of the Earth ecology and climate. This paper focuses on the photogrammetric aspect of the data production and discusses quality of the global mapping as evaluated during the first two years of the mission. Usually, remote sensing image data has been only radiometrically and spectrally corrected, as a part of standard processing, prior to being distributed to investigators. In the case of the spaceborne MISR instrument with its unique configuration of nine fixed pushbroom cameras, continuous and autonomous coregistration and geolocation of image data are required prior to application of scientific retrieval algorithm. In order to address this problem, the MISR ground data processing system includes photogrammetric processing. From the entire MISR production system, three segments can be singled out as photogrammetric in nature. These are 1) in-flight geometric calibration, 2) georectification, and 3) cloud height retrieval. The data obtained through in-flight geometric calibration significantly simplify georectification part of the standard processing. Georectification gives fundamental input to scientific retrieval including cloud-top height retrieval.
机译：多角度成像光谱辐射仪（MISR）是NASA于1999年12月发射的Terra航天器有效载荷的一部分。MISR仪器不断获取反射太阳光下的系统，全局，多角度图像，以支持和改进对卫星的研究。地球生态与气候。本文侧重于数据生产的摄影测量方面，并讨论了在任务的前两年中评估的全球地图质量。通常，作为标准处理的一部分，在将遥感图像数据分发给研究人员之前，仅对其进行辐射度和光谱校正。对于具有九个固定手推扫帚相机的独特配置的星载MISR仪器，在应用科学检索算法之前，需要连续且自主地对图像数据进行成对和定位。为了解决该问题，MISR地面数据处理系统包括摄影测量处理。从整个MISR生产系统中，实际上可以将三个部分选作摄影测量。这些是1）飞行中的几何校准，2）地理校正和3）云高检索。通过飞行中的几何校准获得的数据大大简化了标准处理的地球校正部分。地理校正为包括云顶高度检索在内的科学检索提供了基础输入。

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