Satellite Signal Arrival Direction Estimation to Reduce Multipath Errors Using General-Purpose Receivers and the Multiple Signal Classification (MUSIC) Method in Satellite Positioning

Abstract

Satellite positioning has become accurate to the millimeter order with the use of carrier phase observation data for distance measurement, but one type of error namely multipath error remaines. In this research, as a preliminary step to reducing multipath errors using the data observed with an array antenna, we used a general-purpose receiver and the MUltiple SIgnal Classification (MUSIC) method to determine the direction of arrival of satellite signals. It was found that the direction of arrival of satellite signals can be estimated from pseudo carrier phase observation data using the MUSIC method.