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Precise Single-Frequency Positioning Using the Galileo E5 AltBOC Signal By Torben Schüler
Hardcover: $19.95
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The scientific community is actively and intensively making use of GNSS techniques since the very first beginning of GPS, i.e. approximately since 1985. The current paradigm in the scientific... More > community is that accurate results essentially require dual-frequency receivers with a preferred use of carrier phase measurements for precise positioning applications. This way of thinking is primarily motivated by the fact that the ionospheric delay can be eliminated by use of observations on at least two frequencies. However, the European satellite navigation system Galileo will offer one dedicated signal which is superior to all other signals: The broadband signal E5. This signal is expected to have a very low range noise in the cm range as well as the lowest multipath error impact ever observed in the history of satellite navigation which can be as low as a couple of centimeters in benign environments. This offers new possibilities for precise single-frequency positioning, which is topic of this report.< Less
Single-Frequency GNSS Ionospheric Delay Estimation By Torben Schüler
Hardcover: $49.99
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The Global Positioning System (GPS) is being used for monitoring of the ionosphere since a long time. It is a common belief that dual-frequency receivers are needed for this purpose. However,... More > single-frequency ionospheric delay estimation works as well, it does not require any inter-frequency bias calibration, and can be operated using much cheaper receiver equipment. In addition, the European Galileo satellite navigation system offers one dedicated signal which is much more precise than any of the various GPS signals: The E5 AltBOC-modulated wideband signal. This makes single-frequency monitoring of the vertical total electron content (VTEC) even more attractive. This book describes the retrieval algorithm in detail. It serves as a memorandum, but is also meant as a resource for university students at graduate level.< Less

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