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Signals and Modulation

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Springer Handbook of Global Navigation Satellite Systems

Part of the book series: Springer Handbooks ((SHB))

Zusammenfassung

Satellite navigation relies on signals radiated by orbiting satellites and received by mobile satellite navigation receivers. This chapter addresses the fundamentals of such navigation signals and introduces the most important underlying concepts. It provides an introduction to radio frequency signals including the basics of electromagnetic waves, their carrier frequency, polarization, as well as group and phase velocity. The application of waves for carrying signals, their power and spectrum are addressed. It is shown how information-carrying signals can be modulated onto the wave using various modulation schemes such as binary phase shift keying, binary offset carrier, and alternating binary offset carrier. Setting out from international agreed allocations, the frequency bands used in GlossaryTerm

GNSS

are described. The concept of pseudo-random codes which is typically used for GNSS signals is introduced as well as their receiver side processing following a correlation principle.

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Abbreviations

AltBOC:

alternative BOC

BOC:

binary offset carrier

BPSK:

binary phase-shift keying

CASM:

coherent adaptive sub-carrier modulation

CBOC:

composite binary offset carrier

GNSS:

global navigation satellite system

GPS:

Global Positioning System

ITU:

International Telecommunication Union

RMS:

root mean square

TMBOC:

time multiplexed binary offset carrier

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Author information

Authors and Affiliations

  1. Institute of Communications and Navigation, German Aerospace Center (DLR), Münchener Str. 20, 82234, Wessling, Germany

    Michael Meurer

  2. Dept. of Teleinformatics Engineering, Federal University of Ceará (UFC), Campus do Pici – Bloco 725, CEP 60455-970, Fortaleza, Brazil

    Felix Antreich

Authors
  1. Michael Meurer
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  2. Felix Antreich
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Corresponding author

Correspondence to Michael Meurer .

Editor information

Editors and Affiliations

  1. Dept. of Spatial Sciences, Curtin University, WA 6845, Perth, Australia

    Peter J.G. Teunissen

  2. Department of Geoscience and Remote Sensing, Delft University of Technology, 2600 GA, Delft, Netherlands

    Peter J.G. Teunissen

  3. German Aerospace Center (DLR), Münchener Str. 20, 82234, Wessling, Germany

    Oliver Montenbruck

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Meurer, M., Antreich, F. (2017). Signals and Modulation. In: Teunissen, P.J., Montenbruck, O. (eds) Springer Handbook of Global Navigation Satellite Systems. Springer Handbooks. Springer, Cham. https://doi.org/10.1007/978-3-319-42928-1_4

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