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洪光烈1 王钦1,2 王建宇1,2 梁新栋1,2 孔伟1 李虎1,2

(1.中国科学院上海技术物理研究所中国科学院空间主动光电技术重点实验室, 上海 200083)
(2.中国科学院大学, 北京 100049)

【摘要】大气压力是最重要的气象要素之一。为了实现空间激光遥感大气压力,需要先进行必要的地基激光雷达探测实验研究。以单纵模Nd:YAG激光器的二倍频532 nm激光脉冲作为泵浦源,以KTP(KTiOPO4)晶体作为非线性转换介质的光参量振荡器和光参量放大器,产生了760.236 nm和760.307 nm波长的两种激光脉冲,脉冲能量为40 mJ,采用ϕ350 mm望远镜接收大气的后向散射,从而获得了不同高度处与激光雷达之间双波长的差分光学厚度。有效探测高度为500~4000 m,时间分辨率为1~5 min。实验结果表明,差分光学厚度对应着大气层不同高度处与激光雷达间的压力差,其对应关系的数值表达是可以期待的。

【关键词】 遥感;遥感器;差分吸收激光雷达;光参量振荡器;光参量放大器;差分光学厚度;大气压力;


【基金资助】 国家自然科学基金(61775227);

Preliminary Investigation of Vertical Measurement of Atmospheric Pressure Using Ground-Based Differential Absorption Lidar

HONG Guanglie1 WANG Qin1,2 WANG Jianyu1,2 LIANG Xindong1,2 KONG Wei1 LI Hu1,2

(1.Key Laboratory of Space Active Optoelectronic Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, China 200083)
(2.University of Chinese Academy of Sciences, Beijing, China 100049)

【Abstract】Atmospheric pressure is one of the most important meteorological parameters. In this work, to realize spaceborne laser remote sensing of atmospheric pressure, we conduct investigations of ground-based lidar measurement investigations. A 532-nm laser pulse produced by the second-frequency of a single longitudinal-mode Nd:YAG laser is used as a pump source. An optical parametric oscillator and an optical parametric amplifier with the KTP (KTiOPO4) crystal as a nonlinear conversion medium generate two laser pulses with wavelengths of 760.236 and 760.307 nm, with the pulse energy of 40 mJ. A ϕ350-mm telescope receives the backscattering of the atmosphere, the differential optical depth of two wavelengths between different altitudes and the lidar is obtained. The effective detection altitude range of the ground-based differential absorption lidar is 500–4 000 m, and the time resolution is 1–5 min. The investigations show that the differential optical depth corresponds to the pressure difference between different altitudes of the atmosphere and the lidar, and the numerical expression of the corresponding relationship can be obtained.

【Keywords】 remote sensing; remote sensor; differential absorption lidar; optical parametric oscillator; optical parametric amplifier; differential optical depth; atmospheric pressure;


【Funds】 National Natural Science Foundation of China (61775227);

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This Article


CN: 31-1339/TN

Vol 47, No. 03, Pages 283-290

March 2020


Article Outline


  • 1 Introduction
  • 2 Principle model of DAL
  • 3 System device and experiments of DAL
  • 4 Analysis and discussion
  • 5 Conclusion
  • References