Evaluation of Point Positioning Using the Global Positioning System and the Quasi-Zenith Satellite System as Measured from South Korea
The Quasi-Zenith Satellite System (QZSS), a dedicated regional Japanese satellite system currently under development, was designed to complement the performance of the Global Positioning System (GPS). The high elevation angle of the QZSS satellite is expected to enhance the effectiveness of GPS in...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Korean Space Science Society (KSSS)
2015-12-01
|
| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2015/v32n4/OJOOBS_2015_v32n4_403.pdf |
| Summary: | The Quasi-Zenith Satellite System (QZSS), a dedicated regional Japanese satellite system currently under development, was
designed to complement the performance of the Global Positioning System (GPS). The high elevation angle of the QZSS
satellite is expected to enhance the effectiveness of GPS in urban environments. Thus, the work described in this paper,
aimed to investigate the effect of QZSS on GPS performance, by processing the GPS and QZSS measurements recorded
at the Bohyunsan reference station in South Korea. We used these data, to evaluate the satellite visibility, carrier-to-noise
density (C/No), performance of single point positioning, and Dilution of Precision (DOP). The QZSS satellite is currently
available over South Korea for 19 hours at an elevation angle of more than 10 degrees. The results showed that the impact
of the QZSS on users’ vertical positioning is greatest when the satellite is above 80 degrees of elevation. As for Precise Point
Positioning (PPP) performance, the combined GPS/QZSS kinematic PPP was found to improve the positioning accuracy
compared to the GPS only kinematic PPP. |
|---|---|
| ISSN: | 2093-5587 2093-1409 |