Boeing's Little Bird UAV
For several years now, a Boeing engineering team has examined various methods for navigating a vertical takeoff and landing of an unmanned aerial system to a moving vessel for launch and recovery. The team developed and tested a GNSS/inertial system that uses relatie navigation techniques to do this successfully.
Momentum is building to shift to a new constellation architecture that uses two types of GPS satellites — full-capability GPS III satellites and new lean spacecraft called NavSats.
In this issue: Report-A-Pest, the Fourth GPS IIF, PhoneSats, Russia's 24, and Precision Robots
Just beginning her career, Di Qiu is making the most out of GNSS and
other radio signals to broaden her professional bandwidth.
A Collaborative GNSS Receiver Architecture for Weak Signal Processing
There are lots of ways to enhance single-receiver GNSS navigation performance. However,
methods that combine data from multiple receivers remain relatively unexplored. A new
receiver design takes advantage of the untapped potential for collaborative approaches to achieve more robust positioning capability, particularly in weak signal environments.
Plugging Gaps and Ensuring Coverage
It’s no longer just a question of simply eliminating systems from the PNT mix and closing redundant operations.
Is the Galileo Community Finally Getting Down to Business?
Strangely, some of the work being done in Europe, purportedly to help build European competitiveness in the GNSS market, seems to be doing exactly the opposite.
It’s an exciting idea: Use vehicular ad-hoc networks to locate in-car jammers. Theoretical and experimental results confirm that localization based on this approach has an error below 40 meters — that’s sufficient accuracy for determining the origin of an interference source.
China’s Rapidly Emerging GNSS
In six short years, China has built a fully functional regional GNSS system, BeiDou. How is it doing so far and where is it heading?