| 摘要 |
PROBLEM TO BE SOLVED: To detect that a GNSS receiver becomes an erroneous tracking state due to the effect of cross correlation without enlarging the scale of a circuit when the reception level of a satellite signal is lowered after starting the tracking of the satellite signal. SOLUTION: In the GNSS receiver for receiving signals transmitted from a satellite to measure the position of the receiver, a search process is done for a visible satellite by means of a search circuit in cases where there is a risk of erroneous tracking owing to the effect of cross correlation since the level of a signal is faint in a certain tracking channel. An intense-signal satellite is detected capable of having the effect of cross correlation to the tracking channel. As to the tracking channel determined to have a high probability of doing erroneous tracking, the tracking is stopped. COPYRIGHT: (C)2011,JPO&INPIT |
