TAG: ionosphere

GPS Data Show How Nepal Quake Disturbed Earth’s Upper Atmosphere

May 2, 2015By
nepalquakeionosphere-O

The April 25 magnitude 7.8 earthquake in Nepal created waves of energy that penetrated into Earth’s upper atmosphere in the vicinity of Nepal, disturbing the distribution of electrons in the ionosphere. These disturbances were monitored using GPS signals received by a science-quality GPS receiver in Tibet, a neighboring region to Nepal. The data show that after the initial earthquake rupture (indicated... read more

Out in Front: Good News for Modern Nav

May 1, 2015By

This year’s European Navigation Conference in Bordeaux, France, got underway with “Good news from up there .…” Galileo’s seventh and eighth satellites launched successfully in late March, the European Space Agency (ESA) plans four more satellites to reach orbit in 2015, and space maneuvers for Galileo 5 and 6 have been completed, with a recovery plan currently under study. ESA... read more

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Project Counters Ionospheric Disturbance for GNSS

April 27, 2015By

After 27 months of intensive research, a project team funded under the European Union’s 7th Framework Programme has come up with a solution to counter the problem of ionospheric disturbance affecting GNSS signals. The CALIBRA project recently showcased a commercially applicable approach to mitigate the phenomenon’s impact on high-accuracy GNSS positioning techniques. In  two demonstrations, the project’s newly developed algorithm was... read more

Langley’s Ionosphere Research Focus of CBC Report

March 5, 2015By
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CBC News interviewed GPS World Innovation Editor Richard Langley about his ionosphere interference research project with NASA, reported on earlier this week. Langley, a professor at the University of New Brunswick, is working with the Jet Propulsion Laboratory in California to better understand how the ionosphere is disturbed by a variety of phenomena including solar outbursts and other natural hazards such as... read more

Study of Atmospheric ‘Froth’ May Help GPS Communications

February 26, 2015By
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GPS World Innovation editor Richard Langley has co-authored a study, described below, exploring how irregularities in Earth’s upper atmosphere can distort GPS signals, an important step toward mitigation. read more

PlanetiQ Plans GNSS Weather Constellation

February 10, 2015By
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The company PlanetiQ plans to use GNSS to make real-time weather forecasts. PlanetiQ plans to launch a commercial weather satellite constellation by 2017, composed of 12 to 18 small satellites that will capture data as GNSS satellites pass through Earth’s orbital horizon. The satellites will use radio occultation to collect data that will supplement computer models on weather, producing more accurate and timely weather forecasts and assessments,... read more

NASA Seeks GNSS Remote Sensing Innovations

December 15, 2014By

NASA is soliciting research on remote sensing techniques that use GNSS for studying the Earth’s environment. Specifically, the announcement says NASA “seeks innovative approaches to the development of Global Navigation Satellite System (GNSS) remote sensing techniques and algorithms to study the Earth’s environment from the ionosphere to Earth’s interior.” The announcement says NASA is seeking to emphasize the use of reflected... read more

Innovation: Scintillating Statistics

October 2, 2014By
FIGURE 2. Current multi-GNSS data collection system configuration at Jicamarca Radio Observatory in Peru. (GLO = GLONASS, BDS = BeiDou System, VPN = virtual private network, ISMET = ionospheric scintillation monitoring event triggering, RAID = redundant array of independent disks)

A Look at High-Latitude and Equatorial Ionospheric Disturbances of GPS Signals
In an effort to help improve the monitoring, mapping, and modeling of scintillations, a team of researchers led by Prof. Jade Morton is monitoring high-latitude and equatorial scintillations and they discuss some of their preliminary results in this month’s column. read more