A: System Categories Archives - Page 126 of 233 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

GNSS and Precision Farming

Dr. John Fulton, Ohio State University

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.

By Inside GNSS

How does a GNSS receiver estimate velocity?

Equations 1 – 11

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.

By Inside GNSS

Seriously Seeking a Galileo Service Operator

Carlo des Dorides, El?bieta Bie?kowska

Last January, the European GNSS Agency (GSA) announced a new invitation to tender for the role of Galileo service operator (GSOp). Speaking at the recent EU Space Policy Conference in Brussels, GSA Executive Director Carlo des Dorides called it the largest contract ever to be awarded under the Galileo program.

“It will shape the future of Galileo,” he said.

By Peter Gutierrez

U.S. Nears eLoran Decision with Broad International Implications

Prof. David Last

The U.S. government appears to be closing in on a decision about whether to revive plans for an enhanced Loran (eLoran) system, as a backup for the position, navigation, and timing (PNT) information provided by GPS signals.

By Dee Ann Divis

Expanding EGNOS Horizons

GPS+EGNOS tracking device able to use EGNOS OS and EDAS mounted on a container

The European Geostationary Navigation Overlay Service (EGNOS) has a European regional coverage that could be extended quite easily to areas adjacent to the European Union. Backed by the European Commission, a public/private consortium is operating programs of technical assistance to prepare nations in the Mediterranean region to adopt and exploit European GNSS services in their priority market segments, namely aviation and road freight transport/logistics.

By Inside GNSS

March 13, 2015

Second Galileo FOC Satellite Reaches Corrected Orbit

The European Space Agency (ESA) announced today (March 13, 2015) that the second Galileo full operational capability (FOC) satellite launched into the wrong orbit last August has now entered its corrected target orbit, which will allow detailed testing to assess the performance of its navigation payload.

By Inside GNSS

March 11, 2015

Interest Grows in GPS III Follow-On Competition

David Madden, Space and Missile Systems Center executive director. U.S. Air Force photo

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.

By Inside GNSS

March 10, 2015

Rohde & Schwarz adds ERA-GLONASS Emergency Call Functionality to Test Solutions Offerings

Rohde & Schwarz CMW500 wideband radio communications tester

Rohde & Schwarz is offering a standard compliant test solution for manufacturers and suppliers of automatic Russia’s new ERA-GLONASS in-vehicle emergency call systems.

By Inside GNSS

March 8, 2015

NOAA’s National Geodetic Survey (NGS) Geospatial Summit 2015

Arlington, Virginia

NOAA’s National Geodetic Survey (NGS) Geospatial Summit will be held at the Crystal City Hilton in Arlington, Virginia on April 13-14, 2015.

Registration is now open. Early registration ends March 13, 2015.

NGS will be hosting three events, each one providing a venue for NGS to share information about its products and services as well as hear from its customers across the public and private sectors.

By Inside GNSS

March 5, 2015

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

Chris Blackford of Sky-Futures speaking at AUVSI’s Unmanned Systems Europe 2015. Peter Gutierrez photo

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.

By Inside GNSS

Launch of IRNSS-1D Delayed Due to Technical Problem

The Indian Space Research Organization (ISRO) has postponed launch of the fourth Indian Regional Navigation Satellite System spacecraft (IRNSS-1D), originally scheduled for March 9, due to an anomaly. During integrated electrical checks of the PSLV-C27 launch vehicle and IRNSS-1D after the closure of heat shield on March 3, an anomaly was observed in one of the telemetry transmitters of the satellite.

By Inside GNSS

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.

By Inside GNSS

March 2, 2015

Australian Aviation Agency Launches Trial of GNSS-Aided Aircraft Tracking

Airservices Australia graphic

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.

By Inside GNSS

A: System Categories

GNSS Hotspots | March 2015...

Estimating Ionospheric Delay Using GPS/Galileo Signals in the E5 ...

GNSS and Precision Farming

How does a GNSS receiver estimate velocity?

Seriously Seeking a Galileo Service Operator

U.S. Nears eLoran Decision with Broad International Implications

Expanding EGNOS Horizons

Second Galileo FOC Satellite Reaches Corrected Orbit

Interest Grows in GPS III Follow-On Competition

Rohde & Schwarz adds ERA-GLONASS Emergency Call Functionality to Test Solutions Offerings

NOAA’s National Geodetic Survey (NGS) Geospatial Summit 2015

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

Launch of IRNSS-1D Delayed Due to Technical Problem

Rx Networks Announces New Version of Its GNSS Extended Ephemeris Solution

Australian Aviation Agency Launches Trial of GNSS-Aided Aircraft Tracking