| 摘要 |
FIELD: instrument making. ^ SUBSTANCE: method proceeds from measuring the object radiation density (R) in transparency area and intensive absorption (attenuation) ranges both nearby source (Rab0) and (Ratt0) and at a distance (L), in kilometers, from it. (RabL) and (Ratt) are selected at the sea level depending upon the object temperature (Deltalambdaab) and (Deltalambdaatt). Rab0 and Ratt0 are calculated for selected ranges of Deltalambdaab and Deltalambdaatt. Proceeding from the Plank law and using tables of Passman-Lermor-Hadson the function L=P(omega0, Rab0, Ratt0, RabL, RattL) is defined for observed object where omega0 is the amount of precipitated water in mm per one kilometer. Air temperature and relative humidity measured at the moment of observation are used to define current magnitude of omega0. Magnitudes of RabL and RattL are calculated. Introducing omega0, Rab0, Ratt0, RabL, RattL in mathematical expression of L allows determination of range to the objected observed. ^ EFFECT: expanded performances. ^ 2 cl, 5 dwg |
