Thales

Denis Bouvet

Nicolas Martin

Christian Mehlen

Nicolas Vercier

Bruno Montagne

Stéphane Corazza

Hervé Guichon

Patrick Bartolone

Roland Bonel

Philippe Laviron

This detection method is carried out after a phase for acquiring a navigation signal during a convergence phase and comprises at least one of the following steps: &#x2014;determining a plurality of pilot channel periodic correlations and a plurality of data channel periodic correlations, and determining a first value as a function of these periodic correlations; &#x2014;determining a plurality of pilot channel partial correlations, and determining a second value as a function of these partial correlations; &#x2014;determining a plurality of shifted pilot channel correlations, and determining a third value as a function of these shifted pilot channel correlations. The convergence phase further comprises the step for determining a wrong synchronization when at least one of the first value, the second value, and the third value exceeds a predetermined threshold.

Detection method of a wrong synchronization of a receiver with a satellite, associated receiver and computer program product

The invention concerns a satellite geopositioning method on the basis of satellites each transmitting dual-frequency signals. The method comprises, for each satellite, The position is estimated by using the corrected pseudo-distances computed for each satellite.

Satellite geopositioning method and associated terminal

A method for determining protection levels that comprises a preliminary phase carried out at least one time and a main phase carried out upon determining each new navigation solution. The preliminary phase comprises the steps of acquiring a first error value, providing a set of numbers of monitored faults, determining a plurality of computation coefficients, and storing the set of determined computation coefficients. The main phase includes the steps of determining a current number of monitored faults, and determining a protection level of the corresponding navigation solution by using an integrity relationship and the computation coefficients determined during the preliminary phase.

Method for determining protection levels of navigation solutions, associated computer program product and receiver

A method for determining a wrong synchronization of a receiver with a satellite, associated receiver and computer program product, is implemented after the acquisition phase and includes the following steps:

Method for determining a wrong synchronization of a receiver with a satellite, associated receiver and computer program product

A module making it possible to detect a disturbance signal during initial receiving by a receiver of navigation information, the receiver including a plurality of elementary antennas able to receive, in a plurality of arrival directions, electromagnetic signals including navigation information, a forming unit able to form a resultant signal from the electromagnetic signals and a processing unit able to process the resultant signal, the detection module being integrated into the forming unit and able to receive the electromagnetic signals coming from each of the elementary antennas, analyze the signals and detect a disturbance signal when the receiver is started cold in case of detection of a favored arrival direction of some of the electromagnetic signals.

Detection module of a disturbance signal during initial receiving by a receiver of navigation information, receiver comprising such module, associated method and computer program product

Growing community of inventors

Valence, France

Denis Bouvet