Transient Optical Detection from Space Based on Photodiode

摘要：

To detect the transient optical with wide dynamic range and feeble amplitude, an integrated scheme of preprocessing circuit is proposed in this paper. A silicon photodiode detector records the intensitytime history of transient optical events, which are proportional to transient optical power. The signal condition circuit will modify the incident optical to the optimized output, which adapts to the input ranges of analog-to-digital converter (ADC). FPGA control the signal condition circuit and ADC. FPGA generate the code to control the multiplexers of the preprocessing circuit on or off, in order to adapt to the different detection mode. Also FPGA will generate the clock signal to drive the ADC with adaptivesampling strategy once the double-peak optical event occurred. The strategy will reduce the requirement of storage and improve the efficiency of processing. The simulation wave for the adaptive-sampling was showed in the paper. The results of the test confirm the feasibility of the strategy. At present, the scheme has been used in a transient optical detection system.

关键词： transient optical photodiode remote sensing adaptive-sampling preprocessing circuit

作者: Zhan Jianming Wen Desheng Wang Liang

作者单位: Xian Institute of Optics and Precision Mechanics, Chinese Academy of Science Xian, Shaanxi, China Xian Institute of Optics and Precision Mechanics, Chinese Academy of Science Xian, Shaanxi, China

会议类型: 国际会议

会议名称: 2011 International Conference on Information and Industrial Electronics(2011年信息与工业电子国际会议 ICIIE 2011)

会议地点: 成都

会议语种:英文

页码: 372-375

在线出版日期: 2011-01-14（万方平台首次上网日期，不代表论文的发表时间）