无线电掩星和激光雷达观测结果比较

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COMPARISON OF DENSITY AND TEMPERATURE PROFILE OBSERVED BY LIDAR AND OCCULTATION TECHNIQUE

1. Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, 430071;
2. Graduate School of Electrical Engineering, Tokyo Metropolitan University, Japan

摘要: 简要阐述了激光雷达和GPS掩星探测大气的基本原理,并利用1996年10月14日1625 UT时 B本 TMU钠和瑞利散射激光雷B(39.23°E、35.37°N)资#,反演得到 30-55 km高度范围内大气密度和温度的观测结果,与此同时通过激光雷达上空的 GPS掩星观测到的掩星切点处的观测结果进行了比较.结果表明:两种方法获得测出的密度廓线符合得很好;温度廓线的变化趋势也基本一致,但在某些高度上有较大的偏离.文中最后对比较结果作了简要分析,讨论了重力波对大气密度和温度廓线的影响.
- GPS/MET /
- 激光雷达 /
- 掩星观测
Abstract: Comparisons of profiles of the atmospheric density and the temperature at heights from 30-55 km measured by a Rayleigh with Na lidar and occultation technique have been made preliminarily. The lidar situated in Hochioji Tokyo （35.37°N, 139.23°E） operated routinely, and the data of occultation are available at almost the same place and at the same time （Oct.14, 1996）, which allow to do comparisons of these results obtained by different techniques. The limits of these two techniques are discussed respectively. Results illustrate a good agreement in density profiles and temperature profiles.
- GPS/MET /
- Lidar /
- Occultation