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2021 | OriginalPaper | Chapter

2. Structure of Satellite Navigation Signals

Authors : Zheng Yao, Mingquan Lu

Published in: Next-Generation GNSS Signal Design

Publisher: Springer Singapore

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Abstract

This chapter begins with explaining the basic principles of satellite navigation so as to clarify the missions and functions to be carried out by a navigation signal. Then, using the structural elements of satellite navigation signals as the main thread, this chapter systematically expound on the important basic concepts in the design of the signals. We also discuss the effects of various factors on system performance, such as center frequency, transmission power, polarization characteristics, spreading modulation, spreading code, message structure, and the multiplexing of signals. This chapter serves as the basis for subsequent chapters. Since the elements that make up the satellite navigation signal are closely related, the design of many elements of the signal is carried out in the form of trade-offs and compromises. Therefore, it is necessary to have a systematic understanding of the structure of the entire signal before conducting in-depth research on each aspect.

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Footnotes
1
To compensate for the relativistic effect, the actual frequency on the satellite is 10.22999999543 MHz.
 
2
Thermal noise tracking threshold is the minimum CNR to ensure that the 3-\(\sigma \) jitter of the loop tracking error does not exceed the quasi-linear range of the phase detector. It is an empirical indicator of the robustness of the loop under thermal noise.
 
3
The service was previously called the safety of life survive (SoL) service by the Galileo system.
 
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Metadata
Title
Structure of Satellite Navigation Signals
Authors
Zheng Yao
Mingquan Lu
Copyright Year
2021
Publisher
Springer Singapore
Book
Next-Generation GNSS Signal Design

Print ISBN: 978-981-15-5798-9

Electronic ISBN: 978-981-15-5799-6

Copyright Year: 2021

DOI
https://doi.org/10.1007/978-981-15-5799-6_2

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