Quality Control Algorithms for Permanent GPS Receiver Applications
There has been a burgeoning of activity involving the establishment and operation of permanent GPS stations. The variety of applications is broad, from geodetic reference sites in support of IGS initiatives, to national base stations for real-time differential GPS, “integrity monitoring” and datum maintenance, and even local GPS base stations providing data to surveyors and other users. The level of sophistication of such permanent stations also varies, from systems capable of automatic data collection, transmission and sometimes processing, to relatively simple configurations. All applications, however, share a concern for GPS data “quality”. The detection of cycle slips, data “spikes”, multipath disturbances, and bad data sequences of GPS measurements is a major problem for many applications, even more so in the case of real-time applications.
Some quality control (QC) strategies may be implemented either on a single receiver basis or using GPS network data. This paper discusses the issue of QC for permanent GPS receivers, and comments on aspects of QC which require investigation.
KeywordsTotal Electron Content Carrier Phase Ionospheric Delay Ionospheric Scintillation Carrier Phase Observation
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- BRUNNER, F.K. & P. TREGONING, 1994. Investigation og height repeatability from GPS measurements, Aust. J. Geod.Photo.Surv., 60, 33–48.Google Scholar
- HAN, S. & C. RIZOS, 1997. Multipath effects on GPS in mine environments, Xth Int. Congress of the Int. Soc. for Mine Surveying, Fremantle, Australia, 2–6 November, 447–457.Google Scholar
- KNIGHT, M. & A. FINN, 1996. The impact of ionospheric scintillations on GPS performance, 9th Int. Tech. Meeting of the Sat. Div. of the U.S. Inst, of Navigation, Kansas City, Missouri, Sept. 17–20, 555–564.Google Scholar
- HOFMANN-WELLENHOF, B., LICHTENEGGER, H. & COLLINS, J., 1994. GPS Theory and Practice, Springer-Verlag, Vienna New York, 3rd ed., 355pp.Google Scholar
- JUNGSTAND, A., ENGLER, E., SARDON, E. & KLAHN, D., 1995. Error separation concept in experimental TEC monitoring network, U.S. Inst, of Navigation National Tech. Meeing, Washington, D.C., 323–335.Google Scholar
- LIN, L.S., 1997a. A novel approach to improving the accuracy of real-time ionospheric delay estimation using GPS, 10th Int. Tech. Meeting of the Sat. Div. of the U.S. Inst, of Navigation, Kansas City, Missouri, Sept. 16–19, 169–178.Google Scholar
- LIN, L.S., 1997b. Real-time estimation of ionospheric delay using GPS measurements, PhD dissertation, School of Geomatic Engineering, The University of New South Wales, Sydney, Australia.Google Scholar
- RIZOS, C, 1997. Principles and practice of GPS surveying, Monograph 17, School of Geomatic Engineering, The University of New South Wales, ISBN 0–85839--071-X, approx. 560pp.Google Scholar
- WANNINGER, L., 1993. Effects of the equatorial ionosphere on GPS, GPS World, 4(7), 48–54.Google Scholar