量子电子学报, 2013, 30 (5): 615, 网络出版: 2013-09-30
星载测风激光雷达系统鉴频器性能模拟比较
Comparison of simulated performance of filters in space-borne wind lidar system
大气光学 鉴频器比较 激光雷达 碘分子鉴频器 双边缘FP鉴频器 atmospheric optics filter comparison lidar iodine filter double-edge Fabry-Perot filter
摘要
模拟了基于355 nm波长双边缘 Fabry-Perot(FP)鉴频器和基于532 nm波长碘分子鉴频器的 星载测风激光雷达系统性能。进行的比较和分析主要包括激光出射光子数、大气后向散射强度、 探测器、鉴频器及测风灵敏度等。给出了星载平台系统接收后向散射信号的信噪比和测风误差, 以评估两种激光雷达系统的性能。结果表明,在距地面0~5 km高度范围, 532 nm碘分子鉴频器系统 测风误差低于355 nm 双边缘FP系统,而对于距地面5 km以上大气范围, FP系统风速误差比碘分子 鉴频器系统低25%。
Abstract
Simulated performance of space-borne wind lidar between 355 nm and 532 nm based on double-edge Fabry-Perot and iodine filter were compared respectively . The comparison and analysis included emitted photon number, atmospheric backscattering, detector, filters and wind measurement sensitivity. Signal-to-noise ratio (SNR) and wind measurement error were calculated to assess the lidar systems’ performance. The results showed that when altitude ranges from 0 to 5 km, the wind measurement error of iodine filter system at 532 nm is lower than that of double-edge Fabry-Perot system at 355 nm, while for higher altitude, measurement error of double-edge Fabry-Perot system is 25% lower than iodine filter system.
于翠荣, 刘智深, 毕德仓, 李志刚, 刘秉义. 星载测风激光雷达系统鉴频器性能模拟比较[J]. 量子电子学报, 2013, 30(5): 615. YU Cui-rong, LIU Zhi-shen, BI De-cang, LI Zhi-gang, LIU Bing-yi. Comparison of simulated performance of filters in space-borne wind lidar system[J]. Chinese Journal of Quantum Electronics, 2013, 30(5): 615.