Abstract
This paper describes an improvement for the accuracy of GPS single point positioning using L1-SAIF signal and carrier smoothing. L1-SAIF is a performance enhancement function of Quasi-Zenith Satellites System (QZSS). Carrier smoothing is the method for smoothing a pseudorange by precise carrier phase. The proposed technique mitigates systematic and accidental errors of GPS positioning. But, carrier smoothing has two problems. One is increasing the positioning error in long-time smoothing. Another is vulnerability to cycle slip. So, in this paper, we propose the method for decreasing the effects of these problems using L1-SAIF. The evaluation results confirm the effectiveness of the proposed technique and the feasibility of its highly accurate positioning.
