Tracking GNSS Signals in Low Earth Orbit and High Dynamic Missions

Sara Pourdaraei; Hong Lei Qin; Adeel Anwar

doi:10.1007/978-981-13-3305-7_201

Tracking GNSS Signals in Low Earth Orbit and High Dynamic Missions

Sara Pourdaraei^*
, Hong Lei Qin
, Adeel Anwar

^*Corresponding author for this work

School of Electronic and Information Engineering

Beihang University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The global navigation can be provided by GNSS satellite constellations such as GPS, GLONASS, and the recently emerging BEIDOU and GALILEO in medium and higher earth orbits. Generally speaking, those GNSS satellites, that are in the altitudes of about 20,000 km, move around the Earth with an orbital speed of approximately 3.88 km/s relative to the Earth. According to the Doppler Effect, the relative movement of GNSS satellites and GNSS receivers lead to a Doppler shift in the GNSS signals frequency on the receiver. It would be even worse if the GNSS receiver also has a high velocity relative to the GNSS satellites. A GNSS receiver in space, especially in Low Earth Orbit (LEO), suffers from the high dynamics. A satellite in the altitude of 550 km travels in an orbital speed of approximately 7.58 km/s which leads to a high Doppler frequency shift of about ±60 kHz. That is why tracking the GNSS signals for LEO satellites is always of a great challenge. In this paper, it is attempted to suggest and analyze a suitable method which can surmount the difficulty of high dynamic GNSS signal tracking in LEO. Vector tracking is the method which is selected for this purpose and its performance is analyzed regarding the requirements. It is shown that compared with FLL tracking loop, vector tracking increase the dynamics by at least 200%.

Original language	English
Title of host publication	The Proceedings of the Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018
Editors	Xinguo Zhang
Publisher	Springer Verlag
Pages	2512-2520
Number of pages	9
ISBN (Print)	9789811333040
DOIs	https://doi.org/10.1007/978-981-13-3305-7_201
State	Published - 2019
Event	Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018 - Chengdu, China Duration: 16 Oct 2018 → 18 Oct 2018

Publication series

Name	Lecture Notes in Electrical Engineering
Volume	459
ISSN (Print)	1876-1100
ISSN (Electronic)	1876-1119

Conference

Conference	Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018
Country/Territory	China
City	Chengdu
Period	16/10/18 → 18/10/18

Keywords

GNSS
High doppler shift
High dynamic
LEO satellite
Tracking loop
Vector tracking

Access to Document

10.1007/978-981-13-3305-7_201

Cite this

@inproceedings{e8b722bb729b42bcbed7c47d84ec0705,

title = "Tracking GNSS Signals in Low Earth Orbit and High Dynamic Missions",

abstract = "The global navigation can be provided by GNSS satellite constellations such as GPS, GLONASS, and the recently emerging BEIDOU and GALILEO in medium and higher earth orbits. Generally speaking, those GNSS satellites, that are in the altitudes of about 20,000 km, move around the Earth with an orbital speed of approximately 3.88 km/s relative to the Earth. According to the Doppler Effect, the relative movement of GNSS satellites and GNSS receivers lead to a Doppler shift in the GNSS signals frequency on the receiver. It would be even worse if the GNSS receiver also has a high velocity relative to the GNSS satellites. A GNSS receiver in space, especially in Low Earth Orbit (LEO), suffers from the high dynamics. A satellite in the altitude of 550 km travels in an orbital speed of approximately 7.58 km/s which leads to a high Doppler frequency shift of about ±60 kHz. That is why tracking the GNSS signals for LEO satellites is always of a great challenge. In this paper, it is attempted to suggest and analyze a suitable method which can surmount the difficulty of high dynamic GNSS signal tracking in LEO. Vector tracking is the method which is selected for this purpose and its performance is analyzed regarding the requirements. It is shown that compared with FLL tracking loop, vector tracking increase the dynamics by at least 200\%.",

keywords = "GNSS, High doppler shift, High dynamic, LEO satellite, Tracking loop, Vector tracking",

author = "Sara Pourdaraei and Qin, \{Hong Lei\} and Adeel Anwar",

note = "Publisher Copyright: {\textcopyright} 2019, Springer Nature Singapore Pte Ltd.; Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018 ; Conference date: 16-10-2018 Through 18-10-2018",

year = "2019",

doi = "10.1007/978-981-13-3305-7\_201",

language = "英语",

isbn = "9789811333040",

series = "Lecture Notes in Electrical Engineering",

publisher = "Springer Verlag",

pages = "2512--2520",

editor = "Xinguo Zhang",

booktitle = "The Proceedings of the Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018",

address = "德国",

}

Pourdaraei, S, Qin, HL & Anwar, A 2019, Tracking GNSS Signals in Low Earth Orbit and High Dynamic Missions. in X Zhang (ed.), The Proceedings of the Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018. Lecture Notes in Electrical Engineering, vol. 459, Springer Verlag, pp. 2512-2520, Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018, Chengdu, China, 16/10/18. https://doi.org/10.1007/978-981-13-3305-7_201

Tracking GNSS Signals in Low Earth Orbit and High Dynamic Missions. / Pourdaraei, Sara; Qin, Hong Lei; Anwar, Adeel.
The Proceedings of the Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018. ed. / Xinguo Zhang. Springer Verlag, 2019. p. 2512-2520 (Lecture Notes in Electrical Engineering; Vol. 459).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

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AU - Pourdaraei, Sara

AU - Qin, Hong Lei

AU - Anwar, Adeel

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N2 - The global navigation can be provided by GNSS satellite constellations such as GPS, GLONASS, and the recently emerging BEIDOU and GALILEO in medium and higher earth orbits. Generally speaking, those GNSS satellites, that are in the altitudes of about 20,000 km, move around the Earth with an orbital speed of approximately 3.88 km/s relative to the Earth. According to the Doppler Effect, the relative movement of GNSS satellites and GNSS receivers lead to a Doppler shift in the GNSS signals frequency on the receiver. It would be even worse if the GNSS receiver also has a high velocity relative to the GNSS satellites. A GNSS receiver in space, especially in Low Earth Orbit (LEO), suffers from the high dynamics. A satellite in the altitude of 550 km travels in an orbital speed of approximately 7.58 km/s which leads to a high Doppler frequency shift of about ±60 kHz. That is why tracking the GNSS signals for LEO satellites is always of a great challenge. In this paper, it is attempted to suggest and analyze a suitable method which can surmount the difficulty of high dynamic GNSS signal tracking in LEO. Vector tracking is the method which is selected for this purpose and its performance is analyzed regarding the requirements. It is shown that compared with FLL tracking loop, vector tracking increase the dynamics by at least 200%.

AB - The global navigation can be provided by GNSS satellite constellations such as GPS, GLONASS, and the recently emerging BEIDOU and GALILEO in medium and higher earth orbits. Generally speaking, those GNSS satellites, that are in the altitudes of about 20,000 km, move around the Earth with an orbital speed of approximately 3.88 km/s relative to the Earth. According to the Doppler Effect, the relative movement of GNSS satellites and GNSS receivers lead to a Doppler shift in the GNSS signals frequency on the receiver. It would be even worse if the GNSS receiver also has a high velocity relative to the GNSS satellites. A GNSS receiver in space, especially in Low Earth Orbit (LEO), suffers from the high dynamics. A satellite in the altitude of 550 km travels in an orbital speed of approximately 7.58 km/s which leads to a high Doppler frequency shift of about ±60 kHz. That is why tracking the GNSS signals for LEO satellites is always of a great challenge. In this paper, it is attempted to suggest and analyze a suitable method which can surmount the difficulty of high dynamic GNSS signal tracking in LEO. Vector tracking is the method which is selected for this purpose and its performance is analyzed regarding the requirements. It is shown that compared with FLL tracking loop, vector tracking increase the dynamics by at least 200%.

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BT - The Proceedings of the Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018

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PB - Springer Verlag

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Y2 - 16 October 2018 through 18 October 2018

ER -

Tracking GNSS Signals in Low Earth Orbit and High Dynamic Missions

Abstract

Publication series

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Keywords

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