GPS

New Leaders at the GPS Helm

Washington, D.C., has a peculiarity of seasons. While most of the world marks the shifts between winter and spring, summer and autumn, the politicos on the streets of the U.S. capital count the passage of time in two-year increments.

New operatives and appointees flock to the centers of power in the early days of each administration and the opening of each Congress, then migrate to friendlier climes as congressional elections loom and the administration winds down — as it is now.

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By Dee Ann Divis

GNSS Position Estimates

Q: How do measurement errors propagate into GNSS position estimates?

A: Not surprisingly, GNSS positioning accuracy is largely dependent on the level of measurement errors induced by orbital inaccuracies, atmospheric effects, multipath, and noise. This article discusses how, specifically, these errors manifest as position errors.

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By Inside GNSS

GPS Receiver Performance On Board a LEO Satellite

Equation 1

The small satellite “Technologie-Erprobungs-Träger 1” (TET-1) is the first spacecraft developed for the German Aerospace Center (DLR) On-Orbit-Verification (OOV) program, which provides flight opportunities dedicated to testing and qualification of new technologies in space. The satellite was lifted into a low-Earth orbit (LEO) on July 22, 2012, from the launch site in Baikonur, Kazakhstan.

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By Inside GNSS
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ITSC 2014: 17th International IEEE Conference on Intelligent Transportation Systems

The IEEE Conference on Intelligent Transportation Systems (ITSC 2014) will take place at the Hyatt Regency Qingdao in Qingdao, China on October 8-11, 2014.

The annual flagship conference of the IEEE Intelligent Transportation Systems Society, IEEE ITSC 2014 welcomes articles in the field of Intelligent Transportation Systems, conveying new developments in theory, analytical and numerical simulation and modeling, experimentation, advanced deployment and case studies, results of laboratory or field operational tests.

Special sessions:

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By Inside GNSS
July 20, 2014

U.S. Geological Survey Releases New National Seismic Maps

Students conduct the “drop, cover, hold on” safety procedure during an earthquake preparedness drill. Photo Credit: Jessica Robertson, USGS

Updated National Seismic Hazard Maps released by the U.S. Geological Survey (USGS) on Thursday (July 17, 2014) indicate a higher level of earthquake risk for the West Coast and some areas of the Midwest and East Coast then previously thought.

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By Inside GNSS
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July 17, 2014

NovAtel Launches CORRECT with TerraStar PPP Promotion

Typical precise point positioning (PPP) system design

NovAtel Inc. has announced a promotion for existing customers for the company’s recently launched NovAtel CORRECT with TerraStar PPP subscription service.

Customers using NovAtel legacy equipment (OEMV generation receivers or earlier) or NovAtel’s current OEM6 technology qualify for the following offers:
    • Trade in legacy NovAtel hardware for a FlexPak6, antenna, and one-year TerraStar subscription for $4,995.

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By Inside GNSS
July 14, 2014

Harbinger Sues U.S. Government over LightSquared

Harbinger Capital Partners, a hedge fund controlled by Phil Falcone that acted as the primary financial backer of LightSquared, is suing the United States government over the failure of the proposed terrestrial broadband wireless network that would have broadcast in RF spectrum adjacent to GNSS L1 frequencies.

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By Inside GNSS
July 11, 2014

UN/ ICG Workshop: GNSS for Scientific Applications

Aerial view of ICTP

A weeklong workshop on GNSS and its scientific applications in low-latitude regions of the world will be held in Trieste, Italy at the Abdus Salam International Centre for Theoretical Physics (ICTP) on December 1-5, 2014.

The five-day event will be held in English. It is sponsored by the United Nations Office for Outer Space Affairs (UNOOSA) and organized by the USA and European Commission through the UN’s International Committee on GNSS (ICG).

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By Inside GNSS
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