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2022 | OriginalPaper | Chapter

2. GNSS Constellations and Signals

Author : Clement A. Ogaja

Published in: Introduction to GNSS Geodesy

Publisher: Springer International Publishing

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Abstract

This chapter is an overview of GNSS constellations and signals. It focuses on highlighting the important characteristics of constellations with global satellite coverage, even though other regional augmentation systems also exist. It also highlights some of the key components and characteristics of multi-frequency GNSS signals for positioning, navigation, and timing. Such multi-frequency signals allow for several possible combinations when developing models for high-precision geodetic quality positioning. For example, both dual-frequency and triple-frequency data processing models can be developed through the various combinations of the signals.

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Footnotes
1
Pseudo-Random Noise.
 
2
Alternative Binary Offset Carrier (AltBOC).
 
3
CDMA is a method of frequency reuse whereby multiple radios use the same frequency channel but each one has a unique code.
 
4
Carrier phase observation codes in Tables 2.3, 2.4, 2.5, and 2.6.
 
5
Pseudorange observation codes in Tables 2.3, 2.4, 2.5, and 2.6.
 
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2.
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Metadata
Title
GNSS Constellations and Signals
Author
Clement A. Ogaja
Copyright Year
2022
DOI
https://doi.org/10.1007/978-3-030-91821-7_2