Volume 40 Issue 6
Nov.  2020
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Article Navigation >  Chinese Journal of Space Science  > 2020  >  40(6): 1046-1051
CUI Honglu, YAN Zhaoai, ZHANG Bingyan, GUO Wenjie, HU Xiong. Research on Atmospheric Lidar Signal Simulation Based on HITRAN Database[J]. Chinese Journal of Space Science, 2020, 40(6): 1046-1051. doi: 10.11728/cjss2020.06.1046
Citation: CUI Honglu, YAN Zhaoai, ZHANG Bingyan, GUO Wenjie, HU Xiong. Research on Atmospheric Lidar Signal Simulation Based on HITRAN Database[J]. Chinese Journal of Space Science, 2020, 40(6): 1046-1051. doi: 10.11728/cjss2020.06.1046
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Research on Atmospheric Lidar Signal Simulation Based on HITRAN Database

doi: 10.11728/cjss2020.06.1046

  • 1 National Space Science Center, Chinese Academy of Science, Beijing 100190;

  • 2 Key Laboratory of Science and Technology on Environmental Space Situation Awareness,Chinese Academy of Science, Beijing 100190;

  • 3 University of Chinese Academy of Science, Beijing 100049;

  • 4 Meteorological Observation Centre of China Meteorological Administration, Beijing 100081

  • Received Date: 2019-04-12
  • Rev Recd Date: 2020-05-31
  • Publish Date: 2020-11-15
    Abstract
  • Signal simulation is very important for atmospheric lidar research. It provides a basis for the design and development of lidar system. The simulation system in this paper can be used to simulate the lidar echo signal based on the absorption line data in the HITRAN database. It can calculate the absorption spectrum of atmospheric molecules, and the attenuation caused by aerosols. This simulation system can also calculate molecules scatter coefficient with parameters built in LOWTRAN and it can simulate the Signal-to-Noise Ratio (SNR) of the echo signal. The echo signals of 355nm, 532nm and 1064nm are simulated by the simulation system using the lidar equation and these signals agree well with the distribution of aerosols and atmospheric molecules. The simulation results of 532nm are compared with a Rayleigh Doppler lidar measured results and their results are consistent, which shows that the simulation system is reliable. The optical efficiency of this lidar system is roughly evaluated and its value is reasonable. The measured SNR and the simulated SNR are calculated. Their results are similar, so simulated SNR can evaluate the reliability of echo signals.

     

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