Opinions

In GNSS Race, Could Galileo Be Surging into Second?

March 4, 2015By
σ(pr_gnd) versus elevation for Galileo E1 (dotted lines) and GPS L1 (solid lines for different smoothing constants: red (10s), green (30s), cyan (60s), purple (100s).

A Lockheed Martin vice president has stated that the first GPS III satellite will likely launch in 2017, not 2016 as had been projected in the most recent update. The company is readying the first satellite for launch availability by the end of 2015, for launch as early as the end of this year, but Mark Valerio, vice president and general manager of Lockheed Martin's military space business, stated in a Feb. 18 news briefing that he expects the Air Force will schedule its launch for early 2017. read more

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Successful Testing — and Why It Is More Important Than Ever

March 2, 2015By

By John Pottle and Neal Fedora Precision matters. While “accuracy” is somewhat one-dimensional, “precision” is multi-faceted. We submit to you that whatever area of GNSS-based location you are interested in, precision matters today and will matter more in the future. In this column, we’ll explain why this is. Traditional test approaches involve taking measurements to evaluate fundamental performance, for example,... read more

Out in Front: GPS III and the Budget Blues

March 1, 2015By

Guest column by Don Jewell, Defense Editor In the 2016 President’s Budget, submitted in February, the U.S. Air Force requested a budget of $122.2 billion. That exceeds the Office of Management and Budget’s recommendation by almost $10 billion. I applaud the Air Force action and think it may be too little, too late. On the satellite or hardware side of... read more

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Expert Advice: A Leap into the Unknown?

March 1, 2015By
Leap-Second-O

A leap second will be introduced this year at 23:59 on June 30. This phenomenon comes around periodically and is necessary for keeping UTC in line with the Earth’s slowing rotation. Although it will pass unnoticed by most, it has implications for anyone involved in the development of GNSS-enabled devices. For some, it can be the cause of a major headache. read more

Markey Report Concerns Connected Vehicle Industry

February 26, 2015By
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Sen. Ed Markey’s new car technology report, released earlier this month, basically says that connected vehicles can be hacked, causing danger to drivers and presenting major privacy concerns. While some critics believe Markey’s report was meant to drive media hysteria, others say it raises serious issues that the industry needs to address. In other location news, I'll be covering the Mobile World Congress in Barcelona for GPS World. What will be the showcased location technology? Wearables? Connected vehicles? Or something new? read more

Obstacles in the Orbit Path of GPS III

February 25, 2015By

A Lockheed Martin vice president has stated that the first GPS III satellite will likely launch in 2017, not 2016 as had been projected in the most recent update. The company is readying the first satellite for launch availability by the end of 2015, for launch as early as the end of this year, but Space News reports that Mark... read more

A Milestone in Digital Mapping

February 25, 2015By

Hard to believe, we have only now reached the 10th anniversary of Google Maps. As important as digital maps have become, their purpose is much the same as the printed and drawn maps that preceded them. Digital maps emerged in the 1960s with the Census Bureau’s DIME maps. These first digital maps were used for analysis of place-specific data, such as populations within census tracts or cities. Digital maps in turn led to geographic information systems (GIS) for spatial analysis. Though GIS had uses in fields like city planning, the main stimulus for digital maps came in the 1990s with the convergence of the completion of GPS infrastructure, and affordable and portable computers. read more

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