Abstract The next-generation Global Navigation Satellite Systems (NextGNSS) satellites are
planned to be equipped with inter-satellite links and ultra-stable clocks as well as a …

Abstract The Global Navigation Satellite Systems (GNSSs) apply conventional relativistic
corrections to correct apparent clock offsets. However, with the continuous improvements …

Future inter-satellite clock comparison on high orbit will require optical time and frequency
transmission technology between moving objects. Here, we demonstrate robust optical …

Cislunar space currently lacks the navigation infrastructure from which Earth-centric space
missions benefit–eg Global Navigation Satellite Systems (GNSS). The Deep Space Network …

Seismic dislocation theory is the theory of studying the relationship between seismic fault
slip and geophysical field change, and also it is the link between the source mechanism, the …

In this study, the expected improvement of the future GNSS infrastructure “Kepler” on global
geodetic reference frames with the focus on the Earth rotation parameters (ERP: pole …

基于低轨导航增强星座建立空基时间基准时, 需要指定不同于地面时间基准所建立的频率驾驭
策略; 围绕频率驾驭策略的选取, 分别介绍了阻尼系数, 反馈钟差或调频信息和模型预测控制 …

Clock ensembling is a well-established concept for creating robust and stable time frames,
eg it is used to define the Universal Time Coordinated as well as the GPS system time. In …

This paper investigates the potential of performing orbit determination directly in the Earth-
fixed frame based on Inter-Satellite Ranging (ISR) measurements as primary observables …

A small satellite system has many advantages related to its technical characteristics,
production cycle and costs. At the same time, separate satellites are usually operating as a …