Engineering Plots and statistics are available for the time series of station performance for each day analyzed by the JPL quick look process. Given 24 hours of GPS data the latitude, longitude, and height of each receiver can be computed to within a few mm. Time series graphically illustrate the evolution of receiver positions from day to day. A global reference frame called ITRF96 is used for all time series. Each plot includes the estimated positions with error bars, the best fit line, and the residual scatter which is an indication of the daily measurement precision.
Time series are also available for all global network site s.
This interactive, on-line module presents background text and activities related to plate tectonics, earthquakes, GPS, and space technology at work. All rights reserved.