Analysis on Structure and Multiplexing of L1 Signal from Global Positing System III in-orbit Satellites

Xiaochun LU; Meng WANG; Xue WANG; Yongnan RAO

doi:10.11999/JEIT200534

Volume 43 Issue 8

Aug. 2021

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Article Navigation > Journal of Electronics & Information Technology > 2021 > 43(8): 2317-2323

Xiaochun LU, Meng WANG, Xue WANG, Yongnan RAO. Analysis on Structure and Multiplexing of L1 Signal from Global Positing System III in-orbit Satellites[J]. Journal of Electronics & Information Technology, 2021, 43(8): 2317-2323. doi: 10.11999/JEIT200534

Citation:

Xiaochun LU, Meng WANG, Xue WANG, Yongnan RAO. Analysis on Structure and Multiplexing of L1 Signal from Global Positing System III in-orbit Satellites[J]. Journal of Electronics & Information Technology, 2021, 43(8): 2317-2323. doi: 10.11999/JEIT200534

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Analysis on Structure and Multiplexing of L1 Signal from Global Positing System III in-orbit Satellites

doi: 10.11999/JEIT200534

Xiaochun LU^{1, 2},
Meng WANG^{1, 3
,
,},
Xue WANG^{1, 3},
Yongnan RAO^{1, 2}

1.
National Time Service Center, Chinese Academy of Science, Xi’an 710600, China
2.
School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101407, China
3.
School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101407, China

Received Date: 2020-07-01
Rev Recd Date: 2020-12-21

Available Online: 2020-12-29

Publish Date: 2021-08-10

Abstract

Abstract

The navigation signal is the hub connecting space satellites and ground users, and is one of the most important parts of the satellite navigation and positioning system. Its advantages and disadvantages directly affect the subsequent positioning, speed measurement, timing and other performance. The 40 m high-gain antenna of the National Time Service Center is used to conduct multiple signal acquisition and comparison analysis of the Global Positing System III (GPS III) first satellite. Starting from the GPS III L1 frequency point modulation vector and frequency spectrum distribution, an in-depth analysis of the "sliding" phenomenon in the carrier phase of the L1 frequency point is carried out, and it is concluded that the phenomenon is mainly derived from the L1M signal. C/A code is used to analyze the authorized signal M code. The S-curve zero-crossing deviation and the power proportion of the L1 frequency point signal component are quantitatively analyzed. Among them, the L1M S-curve zero-crossing deviation reaches 0.058ns, and the signal power proportion is up to 6.78. The research results of this paper can provide support for the research on the modulation methods of the new generation GPS signals, and also provide references for the subsequent Beidou navigation satellite signal system design and signal quality evaluation methods.
- Global Positing System III (GPS III),
- Navigation signal,
- Signal structure,
- Signal decode,
- Signal assessment

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References(14)

References

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