Apparatus and method for receiving position and control signals by a mobile machine

DETAILED DESCRIPTION I claim: 1.
An apparatus for receiving position and command signals by a mobile machine, comprising: a base station adapted to receive GPS signals, and transmit at least one of a DGPS signal and a command signal; a pseudolite adapted to receive the at least one of a DGPS signal and a command signal and transmit a combined pseudo-GPS signal and the at least one of a DGPS signal and a command signal, wherein the at least one of a DGPS signal and a command signal is combined with the pseudo-GPS signal by inserting the at least one of a DGPS signal and a command signal between at least two adjacent sideband frequency components of the pseudo-GPS signal: a GPS receiver located on the mobile machine adapted to receive GPS signals, and the combined signals from the pseudolite; a machine position processor located on the mobile machine adapted to receive the GPS, pseudo-GPS, and DGPS signals from the GPS receiver and responsively generate a machine position signal; a machine control processor located on the mobile machine adapted to receive the command signals from the GPS receiver and responsively generate a machine control signal; and a machine navigator located on the mobile machine adapted to receive the machine position signal from the machine position processor and the machine control signal from the machine control processor.
2.
An apparatus, as set forth in claim 1, wherein the machine navigator is adapted to control the mobile machine in response to receiving the machine position signal and the machine control signal.
3.
An apparatus, as set forth in claim 1, wherein the command signal is at least one of a data signal and a voice signal.
4.
An apparatus, as set forth in claim 3, wherein the command signal is a data signal for delivering a command to an autonomous mobile machine.
5.
An apparatus, as set forth in claim 3, wherein the command signal is a voice signal for delivering a voice message to an operator of a mobile machine.
6.
An apparatus, as set forth in claim 3, wherein the command signal is a data signal for delivering a data message to an operator of a mobile machine