Method for estimating multipath error of pseudo-range measurement value, and positioning method using same

Abstract

A method for estimating a multipath error of a pseudo-range measurement value, comprising obtaining satellite navigation system information including a pseudo-range measurement value and a carrier phase measurement value; obtaining a time-differenced carrier phase (TDCP) measurement value by differentiating the carrier phase measurement value with respect to time; setting a monitoring variable for multipath error estimation by using the TDCP measurement value; detecting a change in multipath error using the monitoring variable, and determining a time period usable to estimate the multipath error; and estimating the multipath error at a specific time point using the change relative to a reference time. Accordingly, the location of a target can be precisely determined even in a downtown environment with severe signal distortion, by estimating the multipath error included in the pseudo-range measurement value, and compensating for or excluding the multipath error.