Title :
Phase noise requirements in interferometric radiometers
Author :
Torres, F. ; Corbella, I. ; Castro, E. ; Segarra, M. ; Vilaseca, R.
Author_Institution :
Remote Sensing Lab., Univ. Politec. de Catalunya, Barcelona, Spain
Abstract :
Passive interferometers use phase lock oscillators (PLOs) to perform a coherent demodulation of the signal collected by the antennas. Phase noise in such PLOs may contaminate the measurements and, eventually, produce image errors. This work is devoted to describe the mechanism by which phase noise may turn into measurement errors in order to set sound phase noise and phase drift requirements.
Keywords :
demodulation; geophysical equipment; interferometry; phase noise; radiometers; aperture synthesis; coherent demodulation; image errors; interferometric radiometers; measurement errors; passive interferometers; phase drift requirements; phase lock oscillators; phase noise requirements; Antenna measurements; Demodulation; Interferometers; Measurement errors; Noise measurement; Oscillators; Phase measurement; Phase noise; Pollution measurement; Radiometers; aperture synthesis; interferometer; phase drift; phase noise; radiometer;
Conference_Titel :
Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-3394-0
Electronic_ISBN :
978-1-4244-3395-7
DOI :
10.1109/IGARSS.2009.5417953
