Patent ID: 7170445

Claim:
Positioning system using primary positioning signals emitted by at least one of satellites, pseudolites or another signal emitting device, comprising: a receive antenna for receiving an input signal containing the primary positioning signals; a repeater operatively connected to the receive antenna for processing the input signal in order to produce a plurality of secondary positioning signals, each of the plurality of secondary positioning signals distinguished from the remaining secondary positioning signals by a specific carrier frequency different from carrier frequencies of the primary positioning signals; a plurality of transmit antennas with fixed positions relative to the receive antenna and operatively connected to the repeater, each of the transmit antennas transmitting one of the secondary positioning signals; and at least one receiver capable of receiving and processing the primary positioning signals in order to determine a position of the receiver from the primary positioning signals and further adapted for receiving and processing the secondary positioning signals in order to determine the position of the receiver from the secondary positioning signals.