US 2019/0319697 A1 · METHOD FOR TRANSMITTING A SIGNAL BY A TRANSMITTER DEVICE TO A NON-GEOSYNCHRONOUS SATELLITE

Abstract

A method for transmitting a signal by a transmitter device to a satellite moving in orbit around the Earth, the transmitter device and the satellite including wireless telecommunication means. The method includes the following steps: receiving, by the transmitter device, a signal transmitted by the satellite, referred to as a presence signal, analyzing a frequency shift caused by Doppler effect on a main frequency of the presence signal received by the device, evaluating a proximity criterion between the transmitter device and the satellite on the basis of the analysis of the frequency shift, and transmitting a signal by the transmitter device if the proximity criterion is met.

Claims13

Dependent claims

A method for transmitting a signal with an emitting device to a satellite moving in orbit about the Earth, said emitting device and the satellite comprising wireless telecommunication means, wherein said method comprises steps of:

receiving with said emitting device a signal emitted by the satellite, called the presence signal;
analyzing a frequency shift induced by Doppler effect in the presence signal received by said emitting device;
evaluating a proximity criterion quantifying the proximity between said emitting device and said satellite, on the basis of the analysis of the frequency shift;
and
emitting a signal with said emitting device if the proximity criterion is met.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/347,780Filed 7 Nov 2017

Priority

FR 16607628 Nov 2016

Published

17 Oct 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G01S 5/0246
Using radio waves: involving frequency difference of arrival or Doppler measurements
G01S 11/10
Using radio waves: using Doppler effect
H04B 7/18539
Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service: arrangements for managing radio, resources,…
H04B 7/1855
For geolocalisation of a station: using a telephonic control signal, e.g. propagation delay variation, Doppler frequency variation, power…

Method for transmitting a signal by a transmitter device to a non-geosynchronous satellite

Life of this patent

Method for transmitting a signal by a transmitter device to a non-geosynchronous satellite

Life of this patent

Abstract

Claims13