March/April 2021
Online News, Articles, and Features
Subscribe to the print edition for free.
Global Navigation Satellite Systems Engineering, Policy, and Design
Global Navigation Satellite Systems Engineering, Policy, and Design
Inaccuracy in cities has been the persistent and lingering problem for GNSS, engendering many attempts at a solution and revealing deeply embedded difficulties. This article provides an overview of the Google solution, the rollout in Android phones, and before/after results.
The joint exploitation of meta-signals received from multiple GNSS satellites, and from one or multiple antennas, can achieve high-accuracy PNT solutions in harsh propagation conditions.
eMobility services that provide on-demand eBikes and eScooters rentals are fast growing alternatives to traditional transportation modalities. As they are affordable, convenient, and very green, eMobility services will continue to grow in popularity. This article presents some of the challenges and useful solutions to accurately track eBike and eScooter location in the real world.
Dr. Rui Hirokawa is Deputy General Manager, Space Systems Department, at Kamakura Works, Mitsubishi Electric Corporation. A fixture in today’s GNSS community, he manages several QZSS-related projects, including the centimeter-level augmentation service (CLAS), and has recently been deeply involved in the international standardization of high-accuracy GNSS.
When most were focused on the transition of power in the White House, the day before the Inauguration and the very last day in office for the outgoing party, the FCC denied a petition to stay (delay) the Ligado Networks deployment of a low-power nationwide network interfering with the GPS signal.
As stated in these pages last September, every GNSS user in every segment can benefit from the new modernized signals in the L5 band. Foremost among these are likely to be smartphone users.
