METHOD FOR DETERMINING THE POSITION OF A SATELLITE NAVIGATION SYSTEM RECEIVER, AND ASSOCIATED SYSTEM
First Claim
1. A method for determining the position of a satellite navigation system receiver in which use is made of a probabilistic weighting of the signals received, the said weighting using a coefficient Ki, for each satellite of index i, the said coefficient Ki being a product of factors each comprising a probability of existence of a disturbance, the said coefficient Ki, for each satellite of index i, comprising at least one factor of the form (1−
- Pji)ai, j varying from 1 to 6 in which;
P1i represents, for the satellite of index i, a first probability that the signal received comprises a combination of a non-reflected signal component and of a multi-path signal component,P2i represents, for the satellite of index i, a second probability that the signal received comprises solely a multi-path signal component,P3i represents, for the satellite of index i, a third probability that the signal received is jammed by terrestrial interference,P4i represents, for the satellite of index i, a fourth probability that the signal received comprises a combination of a component of a signal generated by a jammer on the ground and of a component of the nominal signal,P5i represents, for the satellite of index i, a fifth probability that the signal received is not in coherence with previous conditions of reception of the said signal,P6i represents, for the satellite of index i, a sixth probability that the signal received is not in coherence with a mapping of the environs, andai represents a positive real.
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Abstract
A method is provided for determining the position of a satellite navigation system receiver in which use is made of a probabilistic weighting of the signals received, the weighting using a coefficient Ki, for each satellite of index i, the coefficient Ki being a product of factors each comprising a probability of existence of a disturbance, the coefficient Ki, for each satellite of index i, comprising at least one factor of the form (1−Pji)a
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Citations
10 Claims
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1. A method for determining the position of a satellite navigation system receiver in which use is made of a probabilistic weighting of the signals received, the said weighting using a coefficient Ki, for each satellite of index i, the said coefficient Ki being a product of factors each comprising a probability of existence of a disturbance, the said coefficient Ki, for each satellite of index i, comprising at least one factor of the form (1−
- Pji)a
i , j varying from 1 to 6 in which;P1i represents, for the satellite of index i, a first probability that the signal received comprises a combination of a non-reflected signal component and of a multi-path signal component, P2i represents, for the satellite of index i, a second probability that the signal received comprises solely a multi-path signal component, P3i represents, for the satellite of index i, a third probability that the signal received is jammed by terrestrial interference, P4i represents, for the satellite of index i, a fourth probability that the signal received comprises a combination of a component of a signal generated by a jammer on the ground and of a component of the nominal signal, P5i represents, for the satellite of index i, a fifth probability that the signal received is not in coherence with previous conditions of reception of the said signal, P6i represents, for the satellite of index i, a sixth probability that the signal received is not in coherence with a mapping of the environs, and ai represents a positive real. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- Pji)a
Specification