Accurate Airborne Surface Temperature Measurements with Chopper-stabilized Radiometers

Autor:	Dieter Lorenz
Rok vydání:	1991
Předmět:	Surface (mathematics) Atmospheric Science Radiometer business.industry Ocean Engineering Plane mirror Effects of high altitude on humans Temperature measurement Chopper Optics Fuselage Calibration Environmental science business Remote sensing
Zdroj:	Journal of Atmospheric and Oceanic Technology. 8:341-351
ISSN:	1520-0426 0739-0572
DOI:	10.1175/1520-0426(1991)008<0341:aastmw>2.0.co;2
Popis:	The accuracy of chopper-stabilized radiometers for the meteorological measurement of surface temperatures was investigated during a series of airborne trails, including tests at high altitude using a pressurized aircraft. The significant finding was that these radiometers need to be frequently calibrated during flight to ensure accurate readings of the target's infrared output. Laboratory calibration, prior to flight, is a requirement but alone not sufficient. To adapt the author's radiometer to fit into the fuselage of the pressurized aircraft, a plane mirror was installed in front of the radiometer. Theoretical calculations, supported by test results, indicated that the mirror did not affect the device's accuracy. On the contrary, the mirror can be used as a means to compensate for the influence of ambient temperature fluctuations in the immediate vicinity of the radiometer.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f70f7f424406db578a39e8c2124e4ad8 https://doi.org/10.1175/1520-0426(1991)008<0341:aastmw>2.0.co Zobrazit plný text záznamu