Title :
Experimental Evaluation of GNSS-Reflectometry Altimetric Precision Using the P(Y) and C/A Signals
Author :
Carreno-Luengo, Hugo ; Camps, Adriano ; Ramos-Perez, Isaac ; Rius, Antonio
Author_Institution :
Inst. d´Estudis Espacials de Catalunya, Univ. Politectica de Catalunya (UPC), Barcelona, Spain
Abstract :
This work describes a novel dual-band Global Navigation Satellite Systems Reflectometer (GNSS-R) that uses the P(Y) and C/A signals scattered over the sea surface to perform highly precise altimetric measurements. The results derived from two different ground-based field experiments over a dam and over the sea under different surface´s roughness conditions are presented. The analysis of the altimetric performance shows that the results obtained using the P(Y) code improve by a factor between 1.4 and 2.4 as compared to the results obtained using the C/A code, respectively, for high and mid-low satellite´s elevation angles.
Keywords :
height measurement; oceanographic equipment; oceanographic techniques; radioaltimeters; reflectometers; reflectometry; satellite navigation; surface roughness; C-A signal; GNSS-reflectometry altimetric precision; P(Y) signal; altimetric measurement; dam; dual-band Global Navigation Satellite system reflectometer; ground-based field experiment; satellite elevation angle; sea surface scattering; signal scattering; surface roughness condition; Correlation; Global Positioning System; Rough surfaces; Satellites; Sea measurements; Sea surface; Surface roughness; Bistatic radar; Global Navigation Satellite Systems Reflectometer (GNSS-R); Mediterranean Sea; PYCARO; coherent scattering; ocean altimetry;
Journal_Title :
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of
DOI :
10.1109/JSTARS.2014.2320298
