Experimental investigations of pseudoranges measurement errors in navigation receiver with phased array

The main problem to be solved during the development of high-precision GNSS equipment is the reduction of the positioning error. The article describes the experimental results for high-precision navigation equipment. The experiment identified the main sources of pseudorange measurement error. Modern processing methods of satellite signals allow to reduce the pseudorange measurement random error to a few centimeters. Such errors as the ionosphere and troposphere, ephemeris error, and the error of GNSS time support may be excluded from the consideration. Therefore, the main components of positioning error are multipath error and bias error in the analog paths of the receiving equipment. The methods of the multipath error reduction and calibration options for bias error of navigation equipment are examined.