GNSS

Interference mitigated with CRP and dual-polarized antennas: Free webinar

January 30, 2017By

Two new topic areas and presentations have been added to this Thursday’s free webinar on Signal Interference: Detection and Mitigation. The speakers will explore anti-jamming protection with controlled radiation pattern antennas (CRPAs) and with dual-polarized antennas. The latter topic is also the cover story for the February issue, which demonstrated a significant improvement in positioning accuracy and robustness against interference... read more

GPS data release to boost space-weather science

January 30, 2017By

Today, more than 16 years of space-weather data is publicly available for the first time in history. The data comes from space-weather sensors on board the nation’s GPS satellites. The newly available data gives researchers a treasure trove of measurements they can use to better understand how space weather works and how best to protect critical infrastructure, such as the... read more

3 atomic clocks fail on 1 Indian satellite, replacement prepped

January 30, 2017By

Three atomic clocks onboard a single satellite of the NAVIC Indian regional navigation satellite system have failed. Indian Space Research Organization (ISRO) Chairman A.S. Kiran Kumar told The Hindu newspaper that the agency is trying to restart the clocks. Kumar said the affected satellite, IRNSS-1A, is otherwise healthy, and the rest of the constellation is performing its core function of providing... read more

This article is tagged with , , , , , and posted in GNSS, Latest News

NASA to hold workshop on autonomous navigation, GNSS, PNT

January 27, 2017By

The National Aeronautics and Space Administration (NASA) published a notice Jan. 26 in the Federal Register on a planned space navigation workshop. The Workshop on Emerging Technologies for Autonomous Space Navigation is sponsored by NASA Space Communication and Navigations (SCaN) Program. The Feb. 17 workshop is intended to inform industry on evolving positioning, navigation and timing (PNT) technologies and techniques being developed... read more

This article is tagged with , , and posted in GNSS, Latest News

AGU concerned over US limits to science communication

January 26, 2017By

The American Geophysical Union (AGU) wrote to U.S. federal agency heads on Jan. 26, in response to reports that the administration under President Donald Trump has instructed federal agencies to stop communicating with the media, policymakers and the public. “The signals are not encouraging, and they’re alarming, and they’re causing a lot of fear in the scientific community,” Christine McEntee,... read more

This article is tagged with , , , , , and posted in GNSS, Latest News

CNN explores space warfare, US military’s use of GPS

January 26, 2017By

A spaceborne laser zaps a GPS satellite, disabling it. A “kamikaze” satellite hits and destroys other nations’ critical satellites. Another satellite moves beside an Intelsat bird — and listens in. A new CNN special considers all of these possibilities in an exploration of an arms race in space, showcasing the devastation that would be caused by space warfare and how the... read more

This article is tagged with , , and posted in GNSS, Opinions

Implications of BeiDou explored in US congressional report

January 25, 2017By

The U.S.-China Economic and Security Review Commission has issued a staff report titled “China’s Alternative to GPS and Its Implications for the United States.” The report examines the objectives behind Beijing’s decision to develop the system as an alternative to GPS, its efforts to build an industry around the system, and the effects this might have in security, economic and diplomatic... read more

This article is tagged with , , , , and posted in GNSS, Latest News

USAF to test increased GPS signal power Jan. 25

January 24, 2017By

Beginning Wednesday, Jan. 25, Air Force Space Command (AFSPC) will conduct a limited-duration test implementing an increase of the Ll C/A power level on the GPS Block IIR-M and llF satellites — a total of 19 satellites. The C/A power will remain within IS-GPS-200-H specifications, and the power increase is not expected to increase the noise floor by more than... read more