Influence of background radiant power on the signal-to-noise ratio of space-borne laser altimeter

被引：0
|
作者：
Huang, Geng-Hua [1 ]
Ouyang, Jun-Hua [1 ]
Shu, Rong [1 ]
Wang, Jian-Yu [1 ]
Xue, Yong-Qi [1 ]
机构：
[1] Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
来源：
Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves | 2009年 / 28卷 / 01期
关键词：
Radio altimeters - Meteorological instruments - Aneroid altimeters;
D O I：
10.3724/sp.j.1010.2009.00058
中图分类号：
学科分类号：
摘要：
The Chang'E lunar observation laser altimeter was designed to provide precise altimeter data to accurately map the lunar surface by measuring the time interval between the emission and receiving signal. The relationships of the background radiant power, the multiplication factor, and the optimum signal-to-noise ratio of the receiving system were analyzed. The signal-to-noise ratio experiment for different background radiant power was conducted by using the integrating sphere. The influences of background radiant power and APD mutipliction factor on the signal-to-noise ratio of the receiving system were validated. The integrating sphere's simulation test shows that there are variant optimum multiplication factors to achieve the maximum signal-to-noise ratio under variant background radiant power conditions.
引用
收藏
页码：58 / 61
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