A method and device for remote sensing of trace gases

摘要

for remote sensing of spurengasen is using the dial 2 $a (a) um concentration n (r) of the gas to be investigated as a function of the distance (r = r1 + r / 2) with the aid of the dial equation calculated $a $1, where r is the entfernungsintervall from the difference of two entfe rnungen r1 and r2, pon (r1), poff (r1)pon (r2) and poff (r2) the performance of the distance r1 and r2 ru00fcckstreusignalen are received, and the effective differential absorptionsquerschnitt, $b) pon using radiation from a schmalbandigen strahlquelle with absorption lines on the frequency to be gas. ugt, whose spectral width is smaller than the line width of the absorptionslinie,and $a (c) poff with radiation from a broadband strahlquelle off the referenzfrequenz produced, whose spectral set is many times greater than the line width of the absorptionslinie.