Current Issue - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design


End Game for Urban GNSS: Google’s Use of 3D Building Models

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.

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Unambiguous Meta-Signal Processing: A Path to Code-Based High-Accuracy PNT

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.

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Catching A Ride: Improvements to Position Accuracy for eMobility Applications

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.

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Human Engineering: Rui Hirokawa’s Higher Vision

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.

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Ligado Cleared to Press On…For Now

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.

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The Time and the Place: The Power and the Magic of L5

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.

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