Title :
Impact of Doppler frequency compensation errors on spaceborne GNSS-R altimetry
Author :
Park, Hyuk ; Camps, Adriano ; Valencia, Enric
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politec. de Catalunya (UPC), Barcelona, Spain
Abstract :
The compensation of the Doppler frequency error is important to accurately estimate the sea height in spaceborne GNSS-R altimetry. This work presents the impact of the residual Doppler error on the altimetric performance. The GNSS-R altimetric observables (waveforms) are simulated with various observation parameters, and the degradation is analyzed vs. the Doppler errors. It is shown that the Doppler error causes a bias, a decrease of the waveform value, and consequently the altimetric performance degradation in accuracy and precision.
Keywords :
Doppler effect; error compensation; height measurement; remote sensing; Doppler frequency compensation error; residual Doppler error; sea height; spaceborne GNSS-R altimetry; Altimetry; Degradation; Delay; Doppler effect; Global Navigation Satellite Systems; Remote sensing; Signal to noise ratio; Doppler compensation error; GNSS reflectometry; altimetry; altimetry waveform;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350381
