B: Applications

Study: GPS Contributed More Than $68 Billion to the U.S. Economy
June 16, 2015

Study: GPS Contributed More Than $68 Billion to the U.S. Economy

GPS contributed more than $68 billion to the U.S. economy in 2013, according to the preliminary results of a new study presented to the National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board.

And the study’s author, Irv Leveson, a consultant to ASCR Federal Research and Technology Solutions, LLC, described that figure as conservative because it did not fully incorporate a host of GPS applications including those depending on GPS timing information.

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By Inside GNSS
GNSS-Aided Autonomous Trucks Could Save Fuel, Reduce Congestion

GNSS-Aided Autonomous Trucks Could Save Fuel, Reduce Congestion

Block diagram of driver-assisted truck platooning (DATP) system. From “Heavy Truck Cooperative Adaptive Cruise Control” Phase 1 report

Although media coverage of autonomous or self-driving vehicles has focused on their use by private car owners, an initial report on driver-assistive truck platooning (DATP) highlights the prospects for their use in the commercial freight sector.

Titled “Heavy Truck Cooperative Adaptive Cruise Control — Evaluation, Testing, and Stakeholder Engagement for Near Term Deployment: Phase One Final Report,” the DATP project was funded by a grant from the U.S. Department of Transportation’s Exploratory Advanced Research program.

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By Inside GNSS
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Still Not a Thing, Part 2
May 26, 2015

Still Not a Thing, Part 2

One of the first feature articles I wrote as a newly minted GNSS magazine editor 26 years ago was about an advanced rail traffic management system based on GPS that Burlington Northern, with the help of Rockwell Collins, had designed and implemented.

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By Inside GNSS
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Farm Vehicle Automation

Francisco Rovira-Más, Agricultural Robotics Laboratory, Universidad Politécnica de Valencia

Now that we have had GNSS-driven precision in the fields for nearly 20 years, with widespread and growing acceptance by farm vehicle manufacturers and farmers, what lies ahead for precision agriculture?

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By Inside GNSS
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May 20, 2015

Estimating the Short-Term Stability of In-Orbit GNSS Clocks

Global navigation satellite systems provide position, velocity, and time (PVT) solutions to users whose receivers calculate position based on one-way ranging from satellites. As is well-understood, a key step in the positioning process involves a determination of the difference between the time of signal transmission identified in the satellite’s broadcast navigation message and the time of its reception by user equipment.

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By Inside GNSS
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Thinking Small

Equations 2, 7, 8, 9, 10 & 11

Unmanned aerial vehicles (UAV) are finding increased application in both domestic and governmental applications. Small UAVs (maximum take off weight less than 20 kilograms) comprise the category of the smallest and lightest platforms that also fly at lower altitudes (under less than 150 meters).

Designs for this class of device have focused on creating UAVs that can operate in urban canyons or even inside buildings, fly along hallways, and carry listening and recording devices, transmitters, or miniature TV cameras.

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By Inside GNSS
USAF Draft RFP Would Re-Open Competition for GPS Satellite Launch Services
May 14, 2015

USAF Draft RFP Would Re-Open Competition for GPS Satellite Launch Services

GPS Block IIF-5 on its way from Cape Canaveral on February 20, 2014. Photo by Ben Cooper, United Launch Alliance

[Updated May 26, 2015] The U.S. Air Force released a draft request for proposal (RFP) yesterday (May 13, 2015) for GPS III Launch Services, including launch vehicle production, mission integration, and launch operations. The Space Exploration Technologies Corporation — better known as SpaceX and headed by Elon Musk — may well enter the competition.

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By Inside GNSS
Trimble Launches Multi-GNSS, Inertial Module and Enclosure
May 7, 2015

Trimble Launches Multi-GNSS, Inertial Module and Enclosure

Trimble’s BD935-INS (left) and BX-935-INS

Trimble has introduced the BD935-INS module that combines a multi-frequency, multi-GNSS receiver with an integrated 3-D microelectromechanical systems (MEMS) inertial sensor package.

As part of Trimble’s GNSS OEM portfolio, the new compact module augments real-time precise positioning with 3-D orientation, connectivity, and configuration capabilities designed to enable system integrators and OEMs to add GNSS and attitude to specialized or custom hardware solutions.

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By Inside GNSS
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