Beacon for satellite registration
AssigneeLockheed Martin Corporation
InventorRonald H. Clark
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AssigneeLockheed Martin Corporation
InventorRonald H. Clark
Estimating the term…
The present invention is a system for providing GPS users with a high level of confidence in the integrity and accuracy of received GPS signals. A beacon is located at a fixed point on the earth at a known location. The beacon emits a coded signal pulse having a precise RF waveform that is received by all GPS satellites in view of the beacon's location. The RF signal pulse is decoded and processed onboard each GPS satellite. The GPS satellite receives beacon position data from the other in-view GPS satellites via crosslinks. The GPS satellite compares the beacon position data with satellite position data such as Autonav data and thereby verifies the integrity of its own operation. The GPS satellite then sends an integrity message to GPS users to inform the GPS users of the integrity of received GPS signals from that satellite.
A system for verifying the integrity of a signal transmitted from a space vehicle, comprising:
A system for verifying the integrity of a signal transmitted from a space vehicle, comprising:
A method for verifying the integrity of a signal transmitted from a space vehicle, comprising:
Dependencies are inferred from the claim text.