| 摘要 |
<p>The invention relates to a signal receiver for a satellite radio navigation system making it possible to calculate a carrier position in a highly accurate manner. Said receiver comprises several signal digitally processing channels, each of which is associated to a satellite and delivers a first digital data item representing a pseudo distance between the receiver and satellite in the form of an instantaneous time position of a pseudorandom code and a second digital data item representing said pseudo distance in the form of an instantaneous phase of the signal carrier transmitted by the satellite. The inventive receiver is provided with an extended Kalman filter which comprises means for computing the receiver instantaneous position, means for computing a state vector propagation, means for computing the state vector resetting on the base of the observations related to each satellite and an observation matrix, observation computing means and means for computing an instantaneous pseudo distance evaluated for each satellite.</p> |
