为综合利用激光雷达的光学接收天线,设计了一种可工作于主动状态和被动状态的光学遥感测量系统。处于主动状态时,主振荡激光器辐射1 064 nm 的激光脉冲,经倍频输出523 nm 激光,泵浦罗丹明染料,实现调谐脉冲输出,脉冲最高频率10 Hz,脉冲宽度为3. 0 ns,染料激光器输出脉冲能量可达105 mJ,主振荡输出激光脉冲可达1. 08 J。处于被动状态时,利用大气透过的太阳光谱,选取2 个波长的光谱线,采用比例光谱技术,根据激光雷达光学天线接收的太阳光谱强度,反演大气中反应性气体的柱浓度,再计算体积浓度。系统用于测量SO2 和O3 ,应用结果表明此系统的测量数据与国家相关测量平台数据非常吻合。

In order to synthetically utilize the optical receiving antenna of lidar, an optical remote sensing measurement system which can work in active and passive states was designed. In the active state, the main oscillator laser radiates 1 064 nm laser pulse, and outputs 523 nm laser through frequency doubling, pumping Rhodamine 6g (R6g) dye to achieve tunable pulse output. The maximum pulse frequency is 10 Hz, the pulse width is 3. 0 ns, the output pulse energy of the dye laser can reach 105 mJ, and the output laser pulse of the main oscillator can reach 1. 08 J. In the passive state, the column concentration of reactive gas in the atmosphere was inverted by using the solar spectrum transmitted by the atmosphere, selecting two wavelengths of spectral lines, using proportional spectrum technology, according to the solar spectral intensity received by the optical antenna of the lidar, and then the volume concentration was calculated. The system was used to measure SO2 and O3 . The application results show that the measurement data of the system are in good agreement with those of the relevant national measurement platforms.

TN958.93

公益性（气象）行业专项（GYHY201206037）;江苏省科技支撑计划（BE2010733）