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A design for a full-spectrum imaging circuit
Author(s): Zhi-peng Gong; Yong-ping Li; Zheng-yang Yu; Jing Huang; Peng Rong; Xin Li
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Paper Abstract

Two optical payloads on the GF-5 satellite have produced by Beijing Institute of Space Mechanics and Electricity. The full-spectrum spectral camera has the characteristics of wide spectral range, high spatial resolution and high accuracy of radiation calibration. It has reached the domestic leading and international advanced technology level, which has greatly improved China's high-precision observation capability. This paper designs a video circuit for the visible near-infrared spectrum of the camera. The circuit implements timing control and driving of the detector, as well as analog to digital conversion and processing of the analog signal. It completes the acquisition of 8 channels of analog signals, and outputs 14 bits of quantized bits and 30 Mbps of single channel data. The system achieves high signal-to-noise ratio (SNR) through high-stability power supply, high-speed drive level shifting and high-precision (2ns/step) timing control. Under the given simulation test conditions in the laboratory, the measured signal-to-noise ratio of the visible light channel reached 307, and good image data was obtained in the external scene imaging and in the space.

Paper Details

Date Published: 12 March 2019
PDF: 9 pages
Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110232Z (12 March 2019); doi: 10.1117/12.2521853
Show Author Affiliations
Zhi-peng Gong, Beijing Institute of Space Mechanics and Electricity (China)
Yong-ping Li, Global Energy Internet Research Institute (China)
Zheng-yang Yu, Beijing Institute of Space Mechanics and Electricity (China)
Jing Huang, Beijing Institute of Space Mechanics and Electricity (China)
Peng Rong, Beijing Institute of Space Mechanics and Electricity (China)
Xin Li, Beijing Institute of Space Mechanics and Electricity (China)


Published in SPIE Proceedings Vol. 11023:
Fifth Symposium on Novel Optoelectronic Detection Technology and Application
Qifeng Yu; Wei Huang; You He, Editor(s)

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