Preparing the Ground for Multi-Constellation GNSS Science
Start with GPS, add four new and emerging constellations,and get ready for some dramatic changes courtesy of the International GNSS Service’s Multi-GNSS Experiment. This article reports on the status of the new constellations and the MGEX project, describes initial data products, and analyzes some recent results.
The Art of Time
How the pursuit of Beauty led a physicist to a professional life in GNSS.
A Software-Defined All-GNSS Solution
A research team from China’s Tsinghua University have developed a software-defined GNSS receiver capable of receiving and processing signals from all GNSS systems. They describe the receiver’s design and present the results of a campaign that tracked satellite signals from five systems.
Improving Sensitivity and TTFF
In order to improve the acquisition of GNSS signals and accelerate a receiver’s time to first fix, an international team of engineers propose the use of a new aiding signal, describe its design, and evaluate its performance.
How’s That Hopey-Changey Stuff Working Out For Ya?
How about these New Year’s resolutions: admit GPS is critical infrastructure, support multi-GNSS monitoring, ensure location privacy for citizens, and figure out a real backup for PNT.
In this issue: Crowdshipping, Remailing Valentines, Rescue Robots, Point-Counterpoint and Bridging the Gap
Practice Versus Theory
Why bother tracking signals from more than one global navigation satellite system? Isn’t GPS (or GLONASS, or BeiDou, or Galileo) enough?