对流层内激光垂直精密测距研究

Study on the Precise Laser Vertical Distance Measurement in the Troposphere

本文从理论上分析了大气压强和折射率的垂直分布 ,导出了对流层范围内的大气压强和折射率的理论公式 ,给出了两者的简化公式 ,根据气象条件就可以确定对流层任一高度处的折射率和测程上的平均折射率 ,从而可以提高激光垂直测距的精度 ,并分析了利用脉冲式激光测距仪在垂直测距时 。

The vertical profiles of atmospheric pressure and optical refractive index have been theoretically analyzed and formulas that express the vertical atmospheric pressure and refractive index distribution have been derived. The refractive index at any height above sea level in the troposphere can be determined and the average refractive index can be calculated by the simplified formula, so high precise distance measurement can be attained. The measuring error arising from using the ground refractive index has been analyzed.