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Inside GNSS • March/April 2015

GNSS and Precision Farming

Nowhere has the fact that GNSS can guide things besides military weapons and transport manifested itself more profoundly than in agriculture.

While Google and automotive manufacturers struggle to figure out how to put autonomous vehicles on the highway, farmers have been using GNSS for well over a decade to guide equipment through their fields — along with a host of other ag-related, site-specific applications.

Indeed, GNSS — along with an array of other high-tech resources — is transforming agriculture at an accelerating rate.

GNSS Solutions • March/April 2015

How does a GNSS receiver estimate velocity?

Q: How does a GNSS receiver estimate velocity?

A: Stand-alone single-frequency GNSS receivers represent the largest slice of the commercial positioning market. Such receivers operate mainly in single point position (SPP) mode and estimate velocity either by differencing two consecutive positions (i.e., approximating the derivative of user position) or by using Doppler measurements related to user-satellite motion.

March 11, 2015

Interest Grows in GPS III Follow-On Competition

The Air Force is working on a creative acquisition strategy to ensure there is a vigorous competition to build the next tranche of GPS III satellites, says a key acquisition official.

April 13, 2015 - April 14, 2015
Arlington, Virginia, U.S.A.
April 7, 2015 - April 10, 2015
Washington, D.C. Area, U.S.A.
March 5, 2015

UAV Want List (with GNSS Already on Board): A Coherent Regulatory Framework for Europe

Just as you do when you get in your car, the UAS, UAV, drone, RPAS and even ROAV communities — who probably need to agree on an acronym — are beginning to take GNSS for granted. But presenters at the AUVSI Unmanned Systems Europe 2015 conference held Tuesday and Wednesday (March 3–4, 2015) in Brussels had little to say on the subject, to our great disappointment, even though virtually all of the vehicle/vessel systems under discussion use it and need it.

New Builds • March 3, 2015

Rx Networks Announces New Version of Its GNSS Extended Ephemeris Solution

Vancouver, Canada–based Rx Networks Inc., announced the upcoming release of its GPStream PGPS v8 extended ephemeris solution yesterday (March 2, 2015) at the Mobile World Congress in Barcelona, Spain.

March 2, 2015

Australian Aviation Agency Launches Trial of GNSS-Aided Aircraft Tracking

Airservices Australia and Inmarsat announced yesterday (March 1, 2015) that they would lead trials of a GNSS-aided aircraft tracking system to improve surveillance of aircraft over ocean regions.

March 2, 2015

Simulator Manufacturer Flags Leap Second Issue

Differences between BeiDou and GPS and Galileo in designation of a “day number” for the date of applying leap second later this year could cause problems for GNSS receiver manufacturers, according to UK-based simulator provider Racelogic.

February 27, 2015

FCC Issues New Rules on E911 Location Standards, Options Besides GNSS

New rules recently adopted by the Federal Communications Commission (FCC) to help emergency responders better locate wireless 911 callers highlight the role of GPS and GNSS technologies while boosting the use of alternative positioning technologies in indoor locations.

However, the new enhanced (11 (E911) rules, adopted January 29 and published on February 4, explicitly avoided a decision on the use of GNSS systems other than GPS.

Jammer Dectector
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