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Volume 25
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Communication

Satellite Selection Strategy and Method for Signals of Opportunity Navigation and Positioning with LEO Communication Satellites

by
Yanhua Tao
*,
Yang Guo
*,
Shaobo Wang
,
Chuanqiang Yu
and
Zimo Zhu
Laboratory of Intelligent Control, Rocket Force University of Engineering, Xi’an 710025, China
*
Authors to whom correspondence should be addressed.
Sensors 2025, 25(1), 267; https://doi.org/10.3390/s25010267
Submission received: 28 October 2024 / Revised: 19 December 2024 / Accepted: 2 January 2025 / Published: 6 January 2025
(This article belongs to the Section Communications)
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Abstract

Experts and scholars from various nations have proposed studying low Earth orbit (LEO) satellite signals as the space-based signals of opportunity (SOPs) for navigation and positioning. This method serves as a robust alternative in environments where global navigation satellite systems (GNSS) are unavailable or compromised, providing users with high-precision, anti-interference, secure, and dependable backup navigation solutions. The rapid evolution of LEO communication constellations has spurred the development of SOPs positioning technology using LEO satellites. However, this has also led to a substantial increase in the number of LEO satellites, thereby reintroducing the traditional challenge of satellite selection. This research thoroughly examines three critical factors affecting positioning accuracy: satellite observable time, satellite elevation, and position dilution of precision (PDOP). It introduces a strategic approach for selecting satellites in LEO SOPs navigation and positioning. Simulation outcomes confirm that this satellite selection strategy effectively identifies visible satellites, ensuring precise positioning through LEO SOPs.
Keywords: GNSS-denied environment; LEO communication satellite; space-based SOPs; doppler shift (DS); satellite selection strategy; precise point positioning (PPP) GNSS-denied environment; LEO communication satellite; space-based SOPs; doppler shift (DS); satellite selection strategy; precise point positioning (PPP)

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MDPI and ACS Style

Tao, Y.; Guo, Y.; Wang, S.; Yu, C.; Zhu, Z. Satellite Selection Strategy and Method for Signals of Opportunity Navigation and Positioning with LEO Communication Satellites. Sensors 2025, 25, 267. https://doi.org/10.3390/s25010267

AMA Style

Tao Y, Guo Y, Wang S, Yu C, Zhu Z. Satellite Selection Strategy and Method for Signals of Opportunity Navigation and Positioning with LEO Communication Satellites. Sensors. 2025; 25(1):267. https://doi.org/10.3390/s25010267

Chicago/Turabian Style

Tao, Yanhua, Yang Guo, Shaobo Wang, Chuanqiang Yu, and Zimo Zhu. 2025. "Satellite Selection Strategy and Method for Signals of Opportunity Navigation and Positioning with LEO Communication Satellites" Sensors 25, no. 1: 267. https://doi.org/10.3390/s25010267

APA Style

Tao, Y., Guo, Y., Wang, S., Yu, C., & Zhu, Z. (2025). Satellite Selection Strategy and Method for Signals of Opportunity Navigation and Positioning with LEO Communication Satellites. Sensors, 25(1), 267. https://doi.org/10.3390/s25010267

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