Title :
A novel microwave radiometer for assessment of atmospheric propagation conditions for 10 and 90 GHz frequency bands
Author :
Nörenberg, D. ; Crewell, S. ; Löhnert, U. ; Rose, Th ; Martellucci, A.
Author_Institution :
Inst. fur Geophysik und Meteorol., Univ. zu Koln, Cologne
Abstract :
In order to quantify atmospheric perturbations on satellite signals a new ground based ultra stable microwave radiometer is developed. In addition to several K- and V-band channels two further Ku- and W-band channels are implemented. This frequency combination provides sensitivity towards atmospheric water vapour and oxygen, as well as to rain and cloud droplets. To perform high stable measurements, the radiometer is equipped by a continuous calibration method using a Dicke switch and a noise diode. This yields to radiometer stability for integration times up to 2000 seconds.
Keywords :
atmospheric composition; atmospheric electromagnetic wave propagation; atmospheric humidity; atmospheric measuring apparatus; atmospheric optics; atmospheric techniques; calibration; oxygen; radiometers; radiometry; radiowave propagation; Dicke switch; K-band channel; Ku-band channel; V-band channel; W-band channel; atmospheric oxygen sensitivity; atmospheric perturbation quantification; atmospheric propagation condition assessment; atmospheric water vapour sensitivity; cloud droplet sensitivity; continuous calibration method; frequency 10 GHz; frequency 90 GHz; ground based ultrastable microwave radiometer; noise diode; rain droplet sensitivity; satellite signals; Atmospheric measurements; Clouds; Frequency; Microwave propagation; Microwave radiometry; Noise measurement; Performance evaluation; Rain; Satellite broadcasting; Switches; 3D scans of atmospheric quantities; high precise and stable radiometer; propagation parameters; satellite tracking;
Conference_Titel :
Microwave Radiometry and Remote Sensing of the Environment, 2008. MICRORAD 2008
Conference_Location :
Firenze
Print_ISBN :
978-1-4244-1986-9
Electronic_ISBN :
978-1-4244-1987-6
DOI :
10.1109/MICRAD.2008.4579502
