Image: National Geodetic Survey

The differences between Geoid18 values and NAD 83, NAVD 88 values

February 5, 2020

My last column, December 2019, highlighted the National Geodetic Survey’s (NGS) new Geoid Monitoring Service (GeMS); and, that […]

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This article is tagged with David B. Zilkoski, GEOID18, NAD 83, National Geodetic Survey, NAVD 88, NGS and posted in Opinions, Survey

Maintaining the 1-dB standard

February 4, 2020

How do we ensure that GPS is protected from harmful interference? By J. David Grossman, guest columnist Debates […]

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This article is tagged with 1-dB criterion, 1-dB standard, First Fix, GNSS interference, GNSS receivers, GPS Innovation Alliance, GPSIA, International Telecommunications Union, J. David Grossman and posted in From the Magazine, Opinions

Headshots: John Fischer and Ellen Hall

Editorial Advisory Board PNT Q&A: Matching receivers and antennas

January 30, 2020

What are the key technical criteria in matching GNSS receivers and antennas from the same or different manufacturers? […]

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This article is tagged with controlled radiation pattern antenna, CRPA, Ellen Hall, fixed-pattern antenna, GNSS antennas, GNSS receivers, John Fischer, SWaP and posted in From the Magazine, Opinions, Survey

This DFPC map, obtained by FOX31 TV, shows possible locations of drone sightings along with power plants, pipelines and missile sites. (Map: Colorado Division of Fire Prevention and Control)

Drone mystery lights up Colorado skies

January 30, 2020

A proposed FAA rule — open for public comment until March 2 — would require drones over 0.55 […]

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This article is tagged with Colorado, drone identification, drone sightings, FAA, U.S. Air Force, UAV and posted in From the Magazine, Latest News, Opinions

Screenshot: Tom Scott video

Automated shipping moves containers with Locata

January 29, 2020

At ION GNSS+ in September, I met with Nunzio Gambale and Paul Benshoeff of Locata. They were excited […]

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This article is tagged with Amazing Places, Auckland, automation, Locata, New Zealand, shipping, straddle carriers, Tom Scott and posted in Latest News, Opinions, Transportation

Photo: USGS

Editorial Advisory Board Q&A: High-precision surveying and GPS III

January 15, 2020

What improvements will GPS III bring to high -precision surveying? When? Will these improvements require any changes in […]

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This article is tagged with Editorial Advisory Board, GPS III, high-precision, Jean-Marie Sleewaegen, surveying, Tony Agresta and posted in From the Magazine, Opinions, Survey

John Pottle opens the 2019 International Navigation Conference sponsored by the Royal Institute of Navigation (RIN). (Photo: RIN)

Working together for a more navigable world

January 15, 2020

“Diverse teams bring diverse ideas to the table, and that’s the best way to progress.” So said Professor […]

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This article is tagged with conference, continuing education, generational change, John Pottle, navigation and timing, positioning, resilient PNT, RIN, Royal Institute of Navigation and posted in From the Magazine, GNSS, Opinions

A remote tower center. (Photo: SAAB)

A new era begins with geospatially based aviation

January 6, 2020

At any given moment, more than 5,000 airplanes are flying over the United States. In a single year, […]

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This article is tagged with ADS-B, AHA, aviation, FAA, NextGen, WAAS and posted in Featured Stories, Opinions, Transportation