Long Range Analysis and Compensation of Smear in Sweep Aerial Remote Sensing

Zhiming, 刘志明 Liu; Ming, 朱明 Zhu; Li, 陈 黎 Chen; Qing-jun, 李清军 Li; Xuefei, 张雪菲 Zhang; Xiaohui, 赵晓晖 Zhao

doi:10.3788/aos201333.0711001

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2020

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“…The significant features of the new generation of remote spatial sensing technology are wide field of view and high resolution. To realize these features, remote sensing cameras in remote sensing satellites with large apertures and high resolutions require the use of a large, high resolution Charge Coupled Device(CCD) array device [1][2][3]. Due to technological limitations, a monolithic CCD cannot meet the large-size and large field-of-view requirements for the image sensor.…”

Section: Introductionmentioning

confidence: 99%

Precision Auto-Focusing Apparatus Based on Long-Working-Distance, Wide-Spectrum Microscope

2020

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A mirror-based Schwarzschild microscope with a wide spectrum and a long working distance was investigated to perform precise assemblage of detectors. We employed a gradient square method to construct the evaluation function for realizing accurate quantitative analysis of image defocusing. By imaging a resolution target that corresponded to 228 line pairs per mm, the validity and imaging ability of the system was proven. The results of repeated focusing tests yielded a standard deviation of 0.75 μm, which indicated high performance accuracy for the focusing system. The proposed system has potential applications in industrial inspection and focusing detection.

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Section: Introductionmentioning

confidence: 99%