The subject of the present invention is a positioning systemcomprising a set of pseudolites distributed in a confined area, saidpseudolites transmitting positioning signals characterized by their timedesynchronization and their apparent Doppler frequency, said timedesynchronization and/or said apparent Doppler frequency of the positioningsignals transmitted by the pseudolites being configured so that there is noambiguity concerning the location of the correlation peaks P1, P2, P3, P4, P5in the matrix of ambiguities defined by the delay and the apparent Dopplerfrequency of the positioning signals acquired by the receiver.
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