Method and system for delivering virtual reference station data
First Claim
1. A method for delivering Virtual Reference Station (VRS) data derived by a VRS network processor at a VRS control station for a designated location to a mobile position determination unit with a terrestrial communications link, said method comprising:
- creating a data message comprising pseudorange data derived for said designated location and pseudorange corrections for a designated region surrounding said designated location;
sending said data message via a cellular telephone connection from said VRS control station to a moveable Real Time Kinematics (RTK) base station located in the designated region surrounding said designated location; and
transmitting said data message from said moveable RTK base station to a mobile position determination unit using a radio transmitter independent of said cellular telephone connection, wherein said moveable RTK base station may be moved about within said designated region while performing said transmitting.
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Accused Products
Abstract
The present invention is a method and system for determining a geographic position. In one embodiment, a data message comprising pseudorange data for a designated location and pseudorange corrections for a designated region surrounding the designated location is created. The data message is sent via a cellular telephone connection to a base station located in the designated region. The data message is then transmitted from the base station to a mobile position determination unit using a radio transmitter.
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Citations
30 Claims
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1. A method for delivering Virtual Reference Station (VRS) data derived by a VRS network processor at a VRS control station for a designated location to a mobile position determination unit with a terrestrial communications link, said method comprising:
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creating a data message comprising pseudorange data derived for said designated location and pseudorange corrections for a designated region surrounding said designated location; sending said data message via a cellular telephone connection from said VRS control station to a moveable Real Time Kinematics (RTK) base station located in the designated region surrounding said designated location; and transmitting said data message from said moveable RTK base station to a mobile position determination unit using a radio transmitter independent of said cellular telephone connection, wherein said moveable RTK base station may be moved about within said designated region while performing said transmitting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for delivering Virtual Reference Station (VRS) data comprising:
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a VRS control center for creating a data message comprising pseudorange data derived for a designated location and pseudorange corrections for a designated region surrounding said designated location; a moveable Real Time Kinematics (RTK) base station located in said designated region surrounding said designated location, said moveable RTK base station for receiving said data message from said VRS control center via a cellular telephone connection and for transmitting said data message using a radio transmitter independent of said cellular telephone connection, wherein said moveable RTK base station may be moved about within said designated region while transmitting said data message; and a mobile position determination unit for receiving said data message from said moveable RTK base station. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for delivering Virtual Reference Station (VRS) data comprising:
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collecting data from a plurality of reference stations to derive pseudorange data for a designated location and to derive pseudorange corrections for a designated region surrounding said designated location; sending a data message comprising the pseudorange data and the pseudorange corrections to a moveable Real Time Kinematics (RTK) base station via a cellular telephone network, and wherein said moveable RTK base station is located in said designed region surrounding said designated location; and transmitting said data message from said moveable RTK base station to a mobile position determination unit located in said designated region surrounding said designated location using a radio transmitter independent of said cellular telephone network, wherein said moveable RTK base station may be moved about within said designated region while performing said transmitting. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification