A: System Categories Archives - Page 134 of 199 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

A: System Categories

China Launches Two More Compass/BeiDou-2 Spacecraft
September 19, 2012

China Launches Two More Compass/BeiDou-2 Spacecraft

China successfully launched another two Compass/BeiDou satellites into space at 3:10 a.m. Beijing time on Wednesday (September 19, 2012), according to the Chinese state news agency Xinhua.

They were the 14th and 15th satellites for the nation’s GNSS system, and presumably the fourth and fifth middle-Earth-orbiting (MEO) satellites in the constellation. The satellites, launched from the Xichang Satellite Launch Center in southwest China’s Sichuan Province, were boosted by a Long March-3B carrier rocket.

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By Inside GNSS
2012 Trimble International User Conference
September 12, 2012

2012 Trimble International User Conference

Trimble Dimensions, the 2012 International User Conference, will take place at the Mirage Hotel in Las Vegas, Nevada from November 5 to 7.

Early-bird pricing has been extended to September 14.

The annual event targets surveying, engineering, construction, mapping, GIS, geospatial, infrastructure, utilities and field service management professionals who use positioning products developed and sold by Trimble companies. The companies include: Accubid, Applanix, Meridian Systems, OmniStar, Pacific Crest, PeopleNet, Plancal, QuickPen and Tekla.

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By Inside GNSS
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GPS, Galileo Launches Near; GSA Opens Prague Office
September 11, 2012

GPS, Galileo Launches Near; GSA Opens Prague Office

The U.S. and European GNSS programs will launch satellites within a week of each other next month.

A GPS Block IIF satellite is scheduled to be lifted into space on October 4 and a second pair of Galileo in-orbit validation (IOV) satellites, on October 10.

Meanwhile, the European GNSS Agency (GSA) opened its new office in Prague, Czech Republic, last Thursday (September 6, 2012).

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By Inside GNSS
CSNC 2013: China Satellite Navigation Conference
September 7, 2012

CSNC 2013: China Satellite Navigation Conference

"BeiDou Applications – Opportunities and Challenges" is the subject of the 2013 China Satellite Navigation Conference to be held in Wuhan, China on May 15, 16 and 17, 2013.The event will be held at the Wuhan International Conference & Exhibition Center (696 Jiefang Road, Hankou, Wuhan, China).

It is sponsored by the China Satellite Navigation Office and a number of other official PRC agencies.

The official language of the conference is Chinese with simultaneous English translation.

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By Inside GNSS
2013 China SatNav Conference in Wuhan Calls for Papers

2013 China SatNav Conference in Wuhan Calls for Papers

The fourth China Satellite Navigation Conference (CSNC 2013) has issued a call for papers to be presented at the international event scheduled May 15–17, 2013 in Wuhan, China.

The theme of CSNC 2013 is “BeiDou Application — Opportunities and Challenges” and will include an academic exchange as well as a commercial exhibition and technical forum.

Deadline for submitting abstracts is October 31, 2012. Full papers are due by December 20. Authors whose papers have been accepted will be notified by the end of February 2012.

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By Inside GNSS
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ICG-7: Seventh Meeting of the International Committee on GNSS
September 5, 2012

ICG-7: Seventh Meeting of the International Committee on GNSS

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ICG-7 is scheduled for November 5-9 2012. It will be hosted by China and will take place at the Beijing International Convention Center (BICC) in the Asian Games Village section of the city. The chair of ICG-7 is Ran Chengqi, director general of the Chinese Satellite Navigation Office (CSNO).

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By Inside GNSS
International Symposium on GPS/GNSS 2012
September 4, 2012

International Symposium on GPS/GNSS 2012

The International Symposium on GPS/GNSS 2012 will take place on October 31, November 1 and November 2 in Xi’an, China.

The conference venue is Tianyu Gloria Grand Hotel Xian.

The event is organized by organized by College of Geology Engineering
and Geomatics, Chang’an University, the International Association of
Chinese Professionals in Global Positioning Systems (CPGPS) and the
National Time Service Center, Chinese Academy of Sciences.

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By Inside GNSS
Vector Delay Lock Loops
September 3, 2012

Vector Delay Lock Loops

GNSS receivers determine their position and clock bias by measuring the arrival times of satellite signals. Delay lock loops (DLLs) are used in traditional receivers to measure the arrival times of the signals.

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By Inside GNSS
GPS Civil Funding

GPS Civil Funding

The Federal Aviation Administration (FAA) has told those awaiting their slice of the GPS civil program budget that the funds are on the way.

The money, which is supposed to support that portion of the GPS program springing from the needs of civilian users, has been held up for months. In fact, as of late August — with less than 40 days left to go in the fiscal year — the money had not been transferred to either the military’s GPS Directorate or the National Coordination Office (NCO) for Space-Based Positioning, Navigation, and Timing (PNT).

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By Dee Ann Divis
Improving GNSS Attitude Determination

Improving GNSS Attitude Determination

This article describes an integration of a single-frequency GNSS, two-antenna heading system with low-cost inertial and magnetic field sensors in order to improve the availability and reliability of pure GNSS attitude determination. This method calculates a redundant attitude solution in an error-state Kalman filter using different sensor setups. As a result, the process of carrier phase ambiguity resolution accelerates.

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By Inside GNSS
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