Integrated GPS receiver for remote sensing sea state and land cover|
Lie Chung Shen, Jhy Ching Juang, Ping Ya Ko, Ching Lang Tsai and Ching Liang Tseng
In this paper, a new application and the development
of a highly integrated GPS receiver that uses reflected GPS signals for ground
object detection and Digital Terrain Elevation DTED) mapping
are described. First, both right-hand circular polarisation (RHCP) and
left-hand circular polarisation (LHCP) antennas are employed so that direct and reflected
signals can be acquired simultaneously. The direction of arrival of the signals
may be along the reflected signal path or along the line of sight of a particular satellite.
The aim of this study is to exploit the carrier phase, reflectivity of L1/L2
signal-to-noise density ratio components of the reflected signals, and direct signals for
fresh stream water, ocean water, and ground object detection. The sea
states are predicted by using the Doppler shifts resulting from the surface
reflection from a moving surface. An integer ambiguity algorithm is also
implemented. During the development and test stage, the DTED and
satellite images are used and mapped using the integrated software.
Submitted: 25 Mar 2007
Revised: 06 Feb 2008
Accepted: 26 Feb 2008
Published: 20 Apr 2008
Responsible editor: Gurcan Buyuksalih
Shen L C, J C Juang, P Y Ko, C L Tsai & C L Tseng, 2008.
Integrated GPS receiver for remote sensing sea state and land cover.
EARSeL eProceedings, 7(1): 46-58