| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine a multipath signal appropriately without increasing the amount of calculation and increasing circuit scale. <P>SOLUTION: It is determined whether a reception signal is a multipath signal by a simple method, in which when a correlation value of each sampling phase for which correlation calculation has been performed is sequentially plotted on IQ coordinates separately, it is detected whether plotted positions are arranged along a closed curve, or whether they are not arranged along a straight line. On the basis of an area of the arranged closed curve, it is determined whether the reception signal can be used for positioning. <P>COPYRIGHT: (C)2012,JPO&INPIT |
