TAG: space weather

New Spirent Test Framework Evaluates Threats to GPS, GNSS

September 14, 2015By

Spirent Communications has announced a Robust PNT Test Framework that evaluates GPS and GNSS security vulnerabilities for positioning, navigation and timing (PNT) systems. Threats to GNSS and related PNT applications are more orchestrated and coordinated, with the motivation to disrupt or cause financial loss. The technology to disrupt GPS has also become much more accessible, resulting in GPS vulnerability gaining attention... read more

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Septentrio Offers Multi-Constellation Receiver for Space Weather Monitoring

April 14, 2014By

The PolaRxS by Septentrio is a multi-frequency, multi-constellation receiver dedicated to ionospheric monitoring and space weather applications. It features simultaneous high-quality tracking of all visible signals (L1, L2, L5, E5ab/AltBOC GPS/GLONASS/Galileo/Beidou/SBAS) at low noise levels. The receiver outputs an extensive set of GNSS measurements, including signal phase and intensity at up to 100 Hz, with a phase noise standard deviation (phi60)... read more

GNSS Vulnerable: What to Do?

February 18, 2014By

Too Much Sensitivity, Not Enough Robustness, Says Parkinson Brad Parkinson, the founding architect of GPS, told a UK conference that the system needs to be made more robust to ensure worldwide availability of services to users. His concerns over GPS availability relate to threats such as the loss of authorized frequency spectrum (implicitly creating licensed jammers), space weather due to... read more

Blast from Sun Unsettles Earth’s Magnetic Field, but No Storming

January 13, 2014By
Image of the sun on Tuesday, Jan. 7, 2014, from the Solar X-Ray Imager on NOAA's GOES satellite, taken just after the maximum emission of a solar flare. The eruption came from the middle of the sun and is directed toward Earth. This is the largest solar flare so far this year.

Forecasters at NOAA’s Space Weather Prediction Center said the sun’s coronal mass ejection (CME) that reached Earth on Jan. 9, unsettled the geomagnetic field but did not cause storm conditions to be reached due to the weak magnetic field. While there is still a chance we could see some geomagnetic storming, that threat is greatly diminished. The Space Weather Prediction... read more

The Halloween Storms: When Solar Events Spooked the Skies

October 30, 2013By

Ten years ago, scientists watching the skies experienced a Halloween fright of cosmic proportions, when space weather degraded GPS signals, affecting land and ocean surveys, and commercial and military aircraft navigation. The most extreme of what became known as the Halloween Storms hit on October 30, 2003 — ten years ago today. According to the National Oceanic and Atmospheric Agency,... read more

UNB Technology Launched into Space

September 30, 2013By

After a two-week delay, a rocket carrying a GPS instrument designed by University of New Brunswick scientists was launched into space aboard the SpaceX Falcon 9 rocket on September 29. The rocket left Vandenberg Air Force base in California as part of the CASSIOPE (Cascade Smallsat and Ionospheric Polar Explorer) mission. Dr. Richard Langley, GPS World Innovation editor and professor... read more

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Test Results from Real-Time CORS Streaming, Space Weather and NDGPS

May 16, 2013By

Being a person who enjoys spending time in the field using RTK and DGPS, I followed up on my column last month, “Sources of Public, Real-time, High-Precision Corrections,” with a trip to the field to test the NGS CORS Streaming service. About a month ago, I made a trip to Colorado to attend the Space Weather Workshop in Boulder, stop... read more

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Innovation: A Better Way

March 1, 2013By

Monitoring the Ionosphere with Integer-Leveled GPS Measurements
I am joined by two of my graduate students, who report on an advance in the signal processing procedure for better monitoring of the ionosphere, potentially allowing scientists to get an even better handle on what’s going on above our heads. read more