A Comparison of Geodetic Receivers Under A-S Conditions Survey of Baselines

Piet Sluiter, Jeroen Zomerdijk, George Husti

Abstract:	Different manufacturers employ distinct techniques, such as cross-correlation between Y-codes, squaring or otherwise, to enable dual frequency measurements un- der Anti-Spoofing conditions. We investigated the im- pact on baseline results of these techniques for four geodetic receivers, viz. Ashtech Z-12, Wild (or Leica) System 200, Trimble 4000SSE and TurboRogue SNR8000. In particular we analysed the following capabilities: . To accurately resolve a long (100 km) baseline, with correction for ionospheric effects. . To resolve a short (10 km) baseline, fixing the cycle ambiguities using two frequencies. The four receiver types observed each baseline simul- taneously during four complete days in early March 1994. To eliminate any external effects, we inter- changed antenna locations after 24 hours. Processing of the results took place with manufacturer supplied software (if available) and with receiver independent software after a RINEX conversion. For the long baseline, we processed consecutive ses- sions of one hour and we selected for the short one, each hour a 10 minute session for processing. We pre- sent time series of results, an analysis of standard de- viations and other relevant information on the per- formance. From these, objective conclusions can be drawn.
Published in:	Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994) September 20 - 23, 1994 Salt Palace Convention Center Salt Lake City, UT
Pages:	339 - 351
Cite this article:	Sluiter, Piet, Zomerdijk, Jeroen, Husti, George, "A Comparison of Geodetic Receivers Under A-S Conditions Survey of Baselines," Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994), Salt Lake City, UT, September 1994, pp. 339-351.
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