Chirped frequency transfer: a tool for synchronization and time transfer

Transfer Stations and Synchronization

Time and Frequency Transfer in Optical Fibers

The development towards more services in the digital domain, based on computers and server logs at different locations and in different networks, increases the need for high precision time indication. Even though GPS can support this with sufficient precision, many users do not have access to outdoor antennas. Furthermore, there is vulnerability in the weak radio-transmission from the satellite...

Compensated Transfer Entropy as a Tool for Reliably Estimating Information Transfer in Physiological Time Series

We present a framework for the estimation of transfer entropy (TE) under the conditions typical of physiological system analysis, featuring short multivariate time series and the presence of instantaneous causality (IC). The framework is based on recognizing that TE can be interpreted as the difference between two conditional entropy (CE) terms, and builds on an efficient CE estimator that comp...

Public transport fleet scheduling for minimizing total transfer waiting time

Public transportation has been one of the most important research fields in the two last decades. The purpose of this paper is to create a schedule for public transport fleets such as buses and metro trains with the goal of minimizing the total transfer waiting time. We extend previous research works in the field of transit schedule with considering headways of each route as decision variables....

Common-View LORAN-C for Precision Time and Frequency Transfer

In order for LORAN-C to serve as a viable backup to GPS for precision time and frequency transfer, a performance improvement of at least an order of magnitude is required. LORAN-C time recovery performance is limited to the microsecond level by seasonal ASF (additional secondary factor) effects. By employing common-view techniques long used in the GPS community, it may be possible to significan...