With the ultimate vision of ubiquitous egalitarian worldwide coverage, private companies are
launching satellite constellations at unprecedented rates. The large projected traffic in orbital …

The latest space missions have unveiled GNSS usability for distances greater than 187 000
km from the Earth's surface. The actual availability and usability of GNSS signals beyond …

Observation and characterization of GNSS signals in space are gaining momentum for the
re-use of GNSS and its integration in Orbit Determination and Time Synchronization …

As an indispensable part of the future 6G communication system, Satellite Internet of Things
(SIoT) plays a vital role in global communication. However, the communication requirements …

In this article, a flocking control strategy combining with artificial potential field is developed
for collision-free trajectory tracking of satellite cluster with multiple disturbances and …

With the continuous development of satellite constellations worldwide, dynamic estimation of
on-orbit spacecraft plays a more and more important role in space situation awareness …

This paper presents relevant results on the investigation of possible uses of machine
learning based techniques for the processing of data in the field of Global Navigation …

Inter-satellite links (ISLs), the essential part of global navigation satellite systems (GNSS),
enhance the autonomy and flexibility of the constellation under the minimal distribution of …

This study proposes a geometric-based method of providing regional target visibility from a
satellite considering the J 2 perturbation. First, the basic mathematical model is introduced …

New communication technologies like delay and disruption-tolerant networking (DTN) and
free-space laser communications are being developed to handle massive planetary …