Thales

Centre National Detudes Spatiales

M3 Systems

Philippe Paimblanc

Lionel Ries

Christophe Macabiau

Willy Vigneau

Mathias Van Den Bossche

Nabil Jardak

Anchalee Puengnim

Philippe Karouby

A radionavigation signal tracking device comprises a first and a second tracking stage for radionavigation signals. The first tracking stage comprises a first carrier phase-locked loop. The latter produces a first error signal arising from a phase difference between the first carrier and its replica. The phase of the replica of the first carrier is adjusted with the first error signal. The second tracking stage comprises a second carrier phase-locked loop. The latter produces a second error signal arising from a difference between the first phase difference and a phase difference between the second carrier and the replica thereof. The phase of the replica of the second carrier is adjusted with the first and second error signals.

Radionavigation signal tracking device

The present invention relates to a method for protecting a radionavigation receiver user in relation to aberrant pseudo-range measurements. In the method, a measurement error is detected by a statistical estimation scheme based on calculating the residuals of the measurements.

Method for protecting a radio navigation receiver user against aberrant pseudo-range measurements

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Toulouse, France

Philippe Paimblanc