| US 7,589,667 B2 | ||
| Method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver | ||
| Frank van Diggelen, San Jose, Calif. (US); David Lundgren, Mill Valley, Calif. (US); and Charles Abraham, Los Gatos, Calif. (US) | ||
| Assigned to Global Locate, Inc., San Jose, Calif. (US) | ||
| Filed on Nov. 30, 2005, as Appl. No. 11/289,959. | ||
| Application 11/289959 is a continuation of application No. 10/712807, filed on Nov. 13, 2003, granted, now 6,992,617. | ||
| Prior Publication US 2006/0114150 A1, Jun. 01, 2006 | ||
| Int. Cl. G01S 1/02 (2006.01) | ||
| U.S. Cl. 342—357.02 [342/357.09] | 20 Claims |
| 1. A method comprising:
receiving at a server a first ephemeris, wherein the first ephemeris includes data for at least one satellite in a constellation
of satellites;
using the first ephemeris to produce integrity data for validating a second ephemeris residing at a remote receiver; and
transmitting to the remote receiver the integrity data.
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