The reference station includes {HEAD ~ a first Satellite Positioning System antenna} and first SATPS receiver/processor, connected together, for receiving SATPS signals from {TAIL ~ two or more SATPS satellites} and for determining the location of the reference station according to the SATPS signals 
The reference station includes { HEAD ~ a first Satellite Positioning System antenna } and first SATPS receiver / processor , connected together , for receiving SATPS signals from { TAIL ~ two or more SATPS satellites } and for determining the location of the reference station according to the SATPS signals
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH