Method and apparatus for locating mobile receivers using a wide area reference network for propagating ephemeris
AssigneeGlobal Locate, Inc.
InventorFrank van Diggelen
Life of this patent
Estimating the term…
Abstract
A method and apparatus for distribution and delivery of global positioning system (GPS) satellite telemetry data using a communication link between a central site and a mobile GPS receiver. The central site is coupled to a network of reference satellite receivers that send telemetry data from all satellites to the central site. The mobile GPS receiver uses the delivered telemetry data to aid its acquisition of the GPS satellite signal. The availability of the satellite telemetry data enhances the mobile receiver's signal reception sensitivity.
Claims18
A method for locating position comprising:
- receiving satellite telemetry data from all of the satellites in a global positioning system constellation of satellites using only four receiving stations;
- communicating the received satellite telemetry data to a central processing site;
- propagating selected satellite telemetry data to a mobile receiver;
- and
- acquiring at least one satellite signal at said mobile receiver using said selected satellite telemetry data.
Apparatus for locating a position of a mobile receiver comprising:
- four satellite signal receivers for receiving satellite signals from all satellites in a constellation of global positioning satellites;
- a communications network, coupled to each of said satellite signal receivers in said four satellite signal receivers;
- a satellite data processor, coupled to said communications network;
- and
- a mobile receiver, coupled to said satellite data processor.
Dependencies are inferred from the claim text.