Method For Transmitting Satellite Data

• US 20090195451A1
• Filed: 01/06/2009
• Published: 08/06/2009
• Est. Priority Date: 07/06/2006
• Status: Active Grant

• Current Assignee: Technische Universitat Munchen
• Original Assignee: Technische Universitat Munchen
• Inventors: Henkel, Patrick, Guenther, Christoph
• Granted Patent: US 7,852,263 B2
• Time in Patent Office: Days
• US Class Current: 342/357.395
• CPC Class Codes: G01S 19/02 Details of the space or ground control segments

Abstract

In a method for transmitting satellite data of a global navigation satellite system each satellite transmit position data of neighboring satellites to a navigation device on the earth. The subset of neighboring satellites with respect to a specific satellite is determined by averaging over a period of the inter-satellite distance. The subsets are further restricted to the condition that all visible satellites are referenced by the position data of at least one other satellite. This requirement can be met by choosing appropriate permutations among the satellites with shortest distance.

Claims

1. A method for transmitting satellite data for a global navigation satellite system, in which position data of satellites of the global navigation satellite system are transmitted to a navigation device,

characterized in that

position data of a subset of satellites associated with a specific satellite are transmitted to the navigation device by the specific satellite and that the subset of satellites contains a selection of these satellites whose average distance with respect to a period of the distance is shortest.

2. The method according to claim 1,

characterized in that

the subsets are free from groups of satellites which transmits almanacs referring exclusively to members of the group.

3. The method according to claim 1,

characterized in that

the set of satellite data transmitted by a specific satellite contains satellite data of satellites which are farer away from the specific satellite than satellites, whose satellite data is not contained in the set of satellite data transmitted by the specific satellite.

4. The method according to claim 1,

characterized in that

the satellites arranged in the Walker constellation and that the satellite transmits position data of the six nearest satellites and the ninth and tenth nearest satellite.

5. The method according to claim 1,

characterized in that

the satellite data are contained in almanacs.

6. A global navigation satellite system comprising a plurality of satellites

characterized in that

the satellites are arranged for performing a method according to claim 1.