METHOD OF DETECTING MUTUAL CORRELATION OF FALSE SIGNALS, METHOD OF SELECTION-LIMITING TRANSMISSION SOURCE, AND METHOD OF SELECTION-LIMITING SATELLITE

摘要

PROBLEM TO BE SOLVED: To prevent or reduce disturbance such as positional jump caused by a mutual false signal correlation.;SOLUTION: Whether a difference (reception frequency difference) between respective Doppler frequency-measured values from a plurality of satellites received and captured (202) is within a prescribed range or not is determined, to determine whether the minimum correlation peak value out of the satellites within the prescribed range exhibits a weak signal or not (203), and whether the maximum correlation peak value out of the satellites within the prescribed range exhibits a strong signal or not (204). When the conditions hereinbefore are satisfied, the satellite exhibiting the maximum correlation peak value is the true satellite, and the other satellites are regarding as not the true satellites but only false images caused by the mutual false signal correlation by received strong signals from the other satellites. The satellites determined as the false images are removed from an object for satellite selection thereafter (205).;COPYRIGHT: (C)2003,JPO