Positioning, Navigation, and Timing (PNT) is an essential service for modern societies, their
industries, and governmental organizations. Mobility, logistics, and agriculture, among …

The need for precise orbit determination (POD) has grown significantly due to the increased
amount of space-based activities taking place at an accelerating pace. Accurate POD …

Location data is an important piece of information in many Internet of Things (IoT)
applications. Global navigation satellite systems (GNSSs) have been established as the …

This paper summarizes current state-of-the-art navigation results with multi-constellation low
Earth orbit (LEO) satellite signals of opportunity. Experimental results with four LEO satellite …

We are witnessing a space renaissance. Tens of thousands of broadband low Earth orbit
(LEO) satellites are expected to be launched by the end of this decade. These planned …

This letter unveils the unknown structure of Starlink low Earth orbit (LEO) satellites'
orthogonal frequency division multiplexing (OFDM)-like reference signals (RSs). The …

The large availability of Low Earth Orbit (LEO) satellite systems makes them useful beyond
their original purposes, such as in positioning, where their signals can be passively used. In …

Integrated communications and localization (ICAL) will play an important part in future sixth
generation (6G) networks for the realization of Internet of Everything (IoE) to support both …

Low earth orbit (LEO) satellites provide the potential to overcome the current limitations in
global navigation satellite systems (GNSSs) due to the increased satellite velocity and signal …

Satellite-terrestrial integrated networks have been proposed as a promising solution to
provide global seamless coverage in next-generation communication networks. Network …