Kalman filters (KFs) are widely used in atomic clock estimation. However, their theoretical
performances are not strictly determined by traditional methods when the observation …

Global navigation satellite systems need a stable and robust system time in order to provide
services with high accuracy. A well established approach for the generation of such a time …

Low SWaP (Size, Weight, and Power) clocks will play a key role in new alternative
positioning, navigation, and timing (PNT) systems designed to reduce or eliminate …

In this paper, we have explored the possibility to exploit control theory to introduce new
steering techniques for atomic clocks of arbitrary order. Current studies show that most of the …

This final report documents the work completed by researchers and students in the Colorado
Center for Astrodynamics Research (CCAR) and Smead Aerospace Engineering Sciences …

Low SWaP (Size, Weight, and Power) clocks are expected to play a key role in new
positioning, navigation, and time (PNT) systems, providing augmentations or alternatives to …

Low size, weight, and power (SWaP) clocks are expected to play a key role in new
positioning, navigation, and timing (PNT) systems, providing augmentations or alternatives …

Precise and stable timing plays a pivotal role in communication, navigation, and remote
sensing systems. High stability, low-size, weight, and power (SWaP) clocks are of interest for …

We compared two typical ensemble time scale algorithms; AT1 and Kalman filter. Four
commercial atomic clocks composed of two hydrogen masers and two cesium atomic clocks …

In this paper we present an on-board clock steering scheme for achieving tight
synchronization of constellations interconnected with optical inter-satellite links. Thanks to …