This page provides access to real-time GPS constellation data collected by a GPS monitor at the Australian Space Academy.
EXAMPLE DAILY SUMMARY GRAPH
The above graph plots several parameters from a GPS constellation monitor at the Australian Space Academy at Meckering, Western Australia. The relative height should vary because of the ionosphere and satellite constellation configuration. The average signal to noise ratio will vary due to the changing satellites that are visible overhead, and the fact that each satellite has a slightly different transmitter power.
Large L-band solar radio bursts can reduce the received signal to noise ratio of the constellation. Although generally not seen at the mid-latitudes of this monitor, ionospheric scintillations (which occur primarily in equatorial and polar regions) can cause large fluctuations in the SNR.
This GPS monitor uses an Oncore GPS receiver with an external antenna placed to minimise multipath interference. Ionospheric correction has been turned off to allow true ionospheric variations to be reflected in the relative height. This monitor is thus useful for monitoring the condition of the GPS constellation and space weather variations in the Sun and the ionosphere.
Any questions should be directed to <firstname.lastname@example.org>.
REAL-TIME GPS SUMMARY DATA
This summary graph is updated once a day just after the start of the Universal Time day. The source web site is hosted by Arie Verveer.
Australian Space Academy