The equipment forms a single analytical research system for observing the link between the magnetosphere, the ionosphere and the Earth's surface called the South African Ionospheric, Geophysics and Geomagnetic Experimental Resources (SNIGGER).
The system consists of:
20 LEMI-417 Magnetotelluric (MT) Stations measure the long term variations in the earth's Magnetic and Electric Fields using sensitive magnometers and electric field monitors. These variations can be used to infer magnetospheric dynamics as well as the structure of the earth's crust.
The GSV4004B which is a Novatel L1/L2 dual frequency GPS receiver adapted for 50 Hz sampling rate to monitor rapid fluctuations in phase and amplitude of L-band signals at L1=1575.42 MHz. The software provided by the supplier also calculates the Total Electron Content, averaged over a range of filtering periods.