A GNSS receiver includes: a first correlation peak detecting unit (1102) that detects a peak of a correlation value between a positioning signal and a C/A code replica signal; a second correlation peak detecting unit (1104) that detects a peak of the correlation value through a multipath error reduction technique; a signal intensity detecting unit (110, 112) that detects a signal intensity of the positioning signal; a switching unit (108) that inputs the positioning signal to the second correlation peak detecting unit (1104) when the signal intensity is higher than or equal to a threshold, and inputs the positioning signal to the first correlation peak detecting unit (1102) when the signal intensity is lower than the threshold; a pseudo-range calculation unit (114) that calculates a pseudo-range based on the detected correlation peak; and a positioning calculation unit (116) that calculates a location of the GNSS receiver based on the pseudo-range.