METHOD FOR MULTIPATH ERROR CORRECTION

摘要

The present invention relates to a multi-path error correction method. The method includes: a first step where a global navigation satellite system (GNSS) receiver receives a GNSS signal; a second step where an analysis unit analyzes the GNSS signal received in the first step through an FFT analysis; a third step where a correction unit corrects multi-path error included in the GNSS signal according to the analysis result in the second step; and a fourth step where a control unit applies the GNSS signal or the corrected GNSS signal. If the FFT analysis result value in the second step is within a tolerance, the GNSS signal received in the first step is applied in the fourth step. If the FFT analysis result value in the second step is outside the tolerance range, the corrected GNSS signal corrected in the third step is applied in the fourth step. The accuracy of GNSS positioning can be enhanced and accordingly the reliability of a GNSS-based bridge monitoring system can be improved.