Patent · US Expired

Ranging system and method for satellites

US6864838B2 · kind B2 · utility

6Cited by

3References

14Claims

0Family size

Assignee

Societe Europeenne des Satellites S.A. · LU

Inventors

Guy Harles · Fentange, LU
Gerhard Bethscheider · Ayl, DE
Peter Siebert · Wasserliesch, DE

Key dates

Filing date	Aug 6, 2001
Grant date	Mar 8, 2005
Priority date	—
Expiry date	Aug 6, 2021

Classification

Technology area (CPC G)Physics
CPC primaryG01S11/08
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a satellite ranging system predetermined bit sequence or group of bit sequence in a transport stream, which is a digital signal are used to generate trigger signals on the basis of which the delay introduced into the transport stream by the travel path from a satellite ground station to the satellite and back or to another satellite ground station is determined allowing a calculation of the distance between the ground station(s) and the satellite. The predetermined bit sequence or group of bit sequences may be inserted into the transport stream at the uplink site, for example as a specific payload P. In order to avoid insertion of additional packets the transport stream or part of it may be used as a predetermined bit sequence.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.