Ashtech RTZ, Real-Time Kinematic GPS with OTF Initialization

Sergei Gourevitch, Frank van Diggelen, Xinhua Qin, and Mark Kuhl

Abstract:	Ashtech announces the RTZ real time Kinematic system. This product essentially combines the world leading ASHTECH Z-12 receiver with the leading PNAV post-processing program to provide “in the box” real time solutions that equal the post-processed solutions achievable with Z- 12 and PNAV. This system is the heart of an ever growing number of “vertical” applications such as GPSTopo (a topographical mapping system), SEISMARK (a seismic survey stake out system) and MINE SURVEYOR ( a survey system optimized for open pit mines. The system is also being used for OEM applications requiring real-time centimeter accuracy. We wish to make two main points in this paper: 1. Z- 12 quality is the key to the success of this product. 2. Time to Fix is not an adequate quality indicator for “On the Fly” integer ambiguity resolving systems. We suggest a better indicator and show its use for the RTZ product.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	167 - 170
Cite this article:	Gourevitch, Sergei, van Diggelen, Frank, Qin, Xinhua, Kuhl, Mark, "Ashtech RTZ, Real-Time Kinematic GPS with OTF Initialization," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 167-170.
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