GNSS

Innovation: Getting Control

February 1, 2013By
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Off-the-Shelf Antennas for Controlled-Reception-Pattern Antenna Arrays
The antenna is a critical component of any GNSS receiving equipment. It must be carefully designed for the frequencies and structures of the signals to be acquired and tracked. Important antenna properties include polarization, frequency coverage, phase-center stability, multipath suppression, the antenna’s impact on receiver sensitivity, reception or gain pattern, and interference handling. While all of these affect an antenna’s performance, let’s just look at the last two here. read more

This article is tagged with , and posted in From the Magazine, GNSS, Innovation

Call for Participation: Round 2 of NGS Kinematic GPS Challenge

January 30, 2013By

NOAA’s National Geodetic Survey (NGS) is conducting a 12-year project, called Gravity for the Redefinition of the American Vertical Datum (GRAV-D), to redefine the vertical datum of the United States by flying airborne gravity missions. The accuracy of the resulting vertical datum depends directly on the quality of the aircraft’s GNSS position solutions. In August 2010, NGS issued a Kinematic... read more

This article is tagged with and posted in Aviation, GNSS News, Latest News, Signal Processing, Transportation News

Report from ION ITM: Faster, Smaller, Cheaper

January 29, 2013By

And more of them! That’s been one of the mantras — a controversial one, granted — of technological advance in the late 20th and early 21st centuries. It has succeeded in penetrating the global positioning, navigation, and timing vanguard, as evidenced by a handful of key presentations on the first day of the Institute of Navigation (ION) International Technical Meeting... read more

Russia, India Join Global Satnav Augmentation Meeting

January 28, 2013By
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Experts ensuring that aircraft can safely rely on satellite navigation across Europe and other parts of the globe met last week to share future plans, welcoming Russian and Indian representatives for the first time, reports the European Space Agency. More and more aircraft around the globe are using satnav augmentation, with special infrastructure sharpening signal accuracy and reliability across given... read more

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

MediaTek Announces Multi-GNSS Receiver SoC Solutions Supporting Beidou

January 28, 2013By

MediaTek Inc., a fabless semiconductor company for wireless communications and digital multimedia solutions, today announced the availability of its MT3332/MT3333, a 5-in-1 multi-GNSS receiver system-on-chip (SoC) that support the Beidou Satellite Navigation System. The Beidou system has been commercially operational since the end of 2012, and can identify a user’s location to 10 meters (33 feet), their velocity to within... read more

Galileo’s Search and Rescue System Passes First Space Test

January 23, 2013By
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The first switch-on of a Galileo search and rescue package shows it to be working well, according to the European Space Agency. Its activation begins a major expansion of the space-based Cospas–Sarsat network, which brings help to air and sea vessels in distress. The second pair of Europe’s Galileo navigation satellites — launched together on October 12 last year —... read more

Exelis Wins Air Force Contract to Research Low-Cost GPS Alternatives

January 23, 2013By

ITT Exelis has been awarded a $2.15 million contract by the Air Force Research Laboratory (AFRL) to research the development of a small satellite navigation payload to augment the current GPS program. The GPS NAVSAT (Navigation Satellite) program seeks to provide affordable capabilities to aid end-users located in tough-to-reach environments. “The development of smaller satellites — in terms of size,... read more

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

Luch-5B Starts SBAS Test Transmissions

January 21, 2013By

News courtesy of CANSPACE Listserv. According to tracking data from stations of the International GNSS Service’s Multi-GNSS Experiment, the second Russian Luch satellite, Luch-5B, started transmitting GLONASS and GPS differential corrections on January 17, 2013, at around 11:07 UTC. Luch-5B, launched on November 2, 2012, carries a transponder for the System for Differential Correction and Monitoring satellite-based augmentation system. The... read more

This article is tagged with and posted in Augmentation & Assistance, GLONASS, GNSS News, Latest News