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March 30, 2022

Deus in the Machina: Machine-Learning Corrections for Improved Position Accuracy

A novel method for improving the positioning accuracy of GNSS receivers exploits a machine learning (ML) algorithm. The ML model uses the post-fit residuals, which are readily available after the position computation from the position, velocity and timing (PVT) engine, adoptable by existing receivers without requiring any modification. The performance of this method, demonstrated using data collected with mass-market receivers as well as a Google public dataset collected with Android smartphones, shows the practicality of the concept.

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By Inside GNSS
March 29, 2022

Washington View: Not There Yet; DOD Report Says M-Code Capability Lags

Warfighting systems rely on GPS to provide cyber-secure and accurate positioning, navigation and timing (PNT). A recent Department of Defense Operational Test and Evaluation (DOT&E) report examined, along with all U.S. tactical weaponry, the adequacy of current GPS equipment, test strategies and plans for future operational effectiveness. It found some causes for concern.

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By Dawn M.K. Zoldi (Colonel, USAF, Ret.)
March 10, 2022

Taking PNT to the Moon

The 2022 edition of the Munich Satellite Navigation Summit drew speakers (virtually) from around the world, providing a broad overview of the latest developments in the field of GNSS. A highlight was the out-of-this-world session on PNT for lunar navigation, featuring long-time collaborators ESA and NASA.

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By Peter Gutierrez
March 8, 2022

Precise Point Positioning in Urban Environments

With a Low-cost Single-frequency Multi-GNSS Receiver

Although precise point positioning (PPP) has been largely limited to applications in open environments using high-end GNSS receivers, recent test results demonstrate that a new PPP system with a mass-market receiver can significantly improve positioning accuracy in urban environments.

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By Inside GNSS
March 7, 2022

Washington View: 5G, PNT, and Air Safety

A  deadlock over 5G implementation, and the potential hazards the technology would create for air traffic safety, has been at least temporarily resolved. Not all questions have been answered nor problems eliminated, however. And while radio altimeters do not use GPS or GNSS technology, they are definitely PNT devices, and this situation could create precedents for ongoing and future conflicts between telecom and PNT use of the finite radio spectrum.

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By Dawn M.K. Zoldi (Colonel, USAF, Ret.)
February 15, 2022

EMCORE to Acquire L3Harris Space and Navigation Business

EMCORE Corporation, a provider of advanced mixed-signal products that serve the aerospace & defense, communications, and sensing markets, announced that it has entered into a definitive agreement to acquire the assets and liabilities of the L3Harris Space and Navigation Business for approximately $5 million in an all-cash transaction.

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By Inside GNSS
February 7, 2022

GNSS and Earth Observation Market Report Finds 200 Billion Euro ($229 Billion) Revenue Generated in 2021

The European Union Agency for the Space Programme (EUSPA) has published its Earth Observation (EO) & GNSS Market Report, an outgrowth of its annual GNSS Market Report now that the agency has also taken on Earth observation among its administrative responsibilities. The Report is compiled and written for all those making these technologies part of their business plan and developing downstream applications.

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By Inside GNSS
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