Article,
MATLAB Tools for viewing GPS velocities and time series
GPS Solutions, (2003)
DOI: 10.1007/s10291-003-0068-0
Abstract
Over the past decade, many Global Positioning System (GPS) networks
have been installed to monitor tectonic motions around the world.
Some of these networks contain hundreds of sites spread across active
tectonic margins where the differences in velocities across the network
can be 50 - 100 m m/ year. For networks that have been running for
a number of years, the uncertainty in the velocity estimates can
be less than 1 mm/year. In some cases the vertical motions can also
be significant and of importance. Often, the time series of the motions
of the GPS sites show complex non-linear behavior, and in all cases
the statistical model of the time series is more complex than simple
white noise. In this article, we describe a set of Matlab tools developed
for use with the GAMIT/GLOBK GPS data analysis system (King 2002;
King and Herring 2002) that allow interactive viewing and manipulation
of GPS velocities and time series with a Matlab-based graphical user
interface (GUI). The formats of the data files used by the tools
are specific to GAMIT/GLOBK, but they are simple ASCII files that
can be generated from other file formats. The tools are referred
to as GGMatlab.
