Global Navigation Satellite Systems Engineering, Policy, and Design
The Air Force is scouring the landscape for its next round of receiver technology now that the first increment of its military receiver development program is moving into a deeper testing phase.
By Dee Ann Divis
A highly anticipated presentation by Ligado Networks to the nation’s leading satellite navigation experts took an unexpected turn when the company said it could not provide essential network information because it was looking to the government for technical direction and its business plans were still in flux.
By Dee Ann Divis
After several years of shifting plans the competition to build the next tranche of GPS III satellites is poised to start, though the context in which that contest will take place has changed markedly from when planning first began.
By Dee Ann Divis
Federal budgeteers have made clear their support for satellite navigation though problems with military space programs in general, and GPS programs in particular, have lawmakers working to shake up the Pentagon’s management structure and put limits on new federal business to contractors whose projects go awry.
By Dee Ann Divis
Though the United States has been working on a backup for GPS for years, and was actually close to completing an equipment update to that end in 2009, Europe may be the first to put in place a fully independent alternative for positioning and timing data — an economic insurance policy against satellite navigation signals being jammed or disrupted.
By Dee Ann Divis
Figures and ChartsThe GPS community and Virginia-based Ligado are weighing new and upcoming test results as the standoff over interference with satellite navigation services enters its seventh year.
The dispute centers on the company’s now modified proposal to build a terrestrial wireless network supported by frequencies originally allocated for satellites. Though there had been a move some years earlier to augment the satellite services with ground stations the company’s first plan envisioned some 30,000 high-powered ground terminals.
By Dee Ann Divis
The Federal Communications Commission is being asked to choose between the immediate benefits of officially improving U.S. satellite navigation receivers and the possibility that, in doing so, it may raise interference levels in a neighboring band or make it harder to develop alternative uses for those adjacent frequencies.
By Dee Ann Divis
Washington has seen a lot of transitions, so even amidst political controversy it’s generally business as usual.
For the GPS community that business, at least in the near term, will likely center on changes in federal leadership — with many key appointments, like a new Secretary of the Air Force, still to be determined. In addition — even at this early stage when new lawmakers are still trying to find their offices — there are issues and opportunities worth watching in emerging legislation.
By Dee Ann Divis
Yesterday (December 23, 2016) President Obama signed the National Defense Authorization Act (NDAA) for Fiscal Year 2017, a $619-billion bill with a number of provisions affecting satellite navigation.
The legislation (S. 2943) fully authorizes the administration’s requests for all the elements of the GPS program — and signals indirectly that appropriators eventually will provide comparable support — although the NDAA does put additional requirements on those developing the new GPS ground system.
By Dee Ann Divis
With the Republican Party now entirely in charge of Washington’s prime policy real estate the neighborhood is going to change. The current residents are warily watching the newcomers take measurements for a major remodel of agencies, lobbying rules, national priorities, and international relationships, and everyone is assessing the implications of the new landscape.
By Dee Ann Divis
Combined GPS + Galileo constellation. Image source: Nottingham Scientific Ltd., UKExperts working on standards for airborne equipment using GPS, Galileo, and a satellite-based augmentation system (SBAS) appear to have found a way to deal with an unusual problem — too many satellites.
By Dee Ann Divis
Park rangers in Death Valley National Park have begun calling it “death by GPS.” Visitors faithfully following their navigation devices turn down the wrong road or hike away from help and die before rangers can reach them.
But it really isn’t the GPS, it’s the maps in their navigation system’s database.
By Dee Ann Divis
A cooperative network of government labs, funded by a hopeful broadband company, is now testing GPS receivers in a surprise program that will draw key federal agencies directly into an argument over GPS interference standards.
By Dee Ann Divis
