The first step in installing a GPS site is to establish a point in the
bedrock where the GPS measurements will be made. For our sites, we drill
into the bedrock and insert stainless steel monuments. Once the point of
measurement is established, the GPS site can be setup. There are three
major components to each site, including the GPS antenna, the GPS receiver,
and a power supply. The antenna, which collects the actual satellite
signals, is set up directly over the point that has been defined or drilled
in the bedrock. The receiver, which stores the data and is programmed to
collect a specific type and amount of data, is set up near by, and is
connected to the antenna by a cable. Finally, a power system must be used
to run the GPS receiver. We primarily use battery and solar power. Once
the antenna, receiver, and power supply are set up, the site is finally
stabilized to withstand the harsh Antarctic weather conditions. After all
the GPS equipment is set up and secured, we cross our fingers and hope for
the best against whatever elements Antarctica may bring.
I
