Patent ID: 7532160

Claim:
A receiver system for a global or local navigation positioning system, the receiver system comprising: an antenna connected with a machine of an open pit mine, the antenna operable to receive a signal from a land-based transmitter of the open pit mine; a down converter connected with the antenna; a portion of a first mobile receiver spaced from the down converter and connected with the machine of the open pit mine, the portion of the first mobile receiver responsive to signals from the down converter for determining a range, wherein the portion comprises a signal tracking circuit; a global navigation satellite antenna operable to receive a satellite ranging signal; a mobile global navigation satellite receiver spaced from the global navigation satellite antenna and operable to down convert signals from the global navigation satellite antenna; and a cable connected with the down converter and the portion of the first mobile receiver, the cable operable to transmit down converted signals from the down converter to the portion of the receiver.