Detection of coherent reflections with GPS bipath interferometry
Atmospheric and Oceanic Physics
2007-05-23 v1 Geophysics
Abstract
Results from a GPS reflectometry experiment with a 12 channel ground-based GPS receiver above two lakes in the Bavarian Alps are presented. The receiver measures in open-loop mode the coarse/aquisition code correlation function of the direct and the reflected signal of one GPS satellite simultaneously. The interference between the coherently reflected signal and a model signal, which is phase-locked to the direct signal, causes variations in the amplitude of the in-phase and quad-phase components of the correlation sums. From these amplitude variations the relative altimetric height is determined within a precision of 2 cm.
Keywords
Cite
@article{arxiv.physics/0407091,
title = {Detection of coherent reflections with GPS bipath interferometry},
author = {Achim Helm and Georg Beyerle and Markus Nitschke},
journal= {arXiv preprint arXiv:physics/0407091},
year = {2007}
}
Comments
11 pages, 4 figures; Research Note, submitted to the Canadian Journal of Remote Sensing