MULTIPATH SIGNAL DETERMINATION METHOD, SIGNAL PROPRIETY DETERMINATION METHOD, POSITIONING CALCULATION METHOD, PROGRAM, AND MULTIPATH SIGNAL DETERMINATION CIRCUIT

摘要

PROBLEM TO BE SOLVED: To determine a multipath signal appropriately without increasing the amount of calculation and increasing the scale of circuitry.;SOLUTION: It is determined whether a reception signal is a multipath signal by a simple method, in which when the correlation value of each sampling phase for which correlation calculation has been performed is sequentially plotted on the IQ coordinates, it is detected whether the plotted positions are arranged along a closed curve or they are not arranged along a straight line. On the basis of the area of the arranged closed curve, it is determined whether it can be used for positioning.;COPYRIGHT: (C)2009,JPO&INPIT