高分解能レーザーレーダーにより気温測定を行なうための最適設計条件
1985 年 54 巻 9 号 p. 972-978
詳細
1985 年 54 巻 9 号 p. 972-978
The optimization of the high spectral resolution lidar which uses anatomic vapor filter for remote measurement of atmospheric temperature is discussed. The procedure for selecting the most suitable atom to use as the filter is shown, and the optimum filter temperature at which to measure atmospheric temperature with the highest sensitivity is determined. It is shown that it is best to use Cs at 550K for a 5cm cell length. Error analysis indicates that the fluctuation of filter temperature is critical for accurate measurement and it was found that the fluctuation of the filter temperature must be within 0.3K for an error ±1K in atmospheric temperature. It was found that it takes only 14s to measure atmospheric tem-perature at the height of 5km with a 30m range resolution by using laser pulses with 20mJ/pulse and 25 pps, and a 35cm dia. telescope.
