TAG: BeiDou

Kuwait high-rise goes up with assist from BeiDou

May 9, 2016By
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CORS station tracks China’s constellation over three frequencies. Headquarters for the National Bank of Kuwait, a new 300-meter-tall building under construction, combines concrete, steel, glazing and glass-reinforced concrete in a unique shellfish shape. The engineering challenges behind this building led the engineers of Ahmadiah Company, the contractor, to use GNSS technology to install the core wall structure with millimeter accuracy.... read more

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System of Systems: OCX passes first qualification

May 1, 2016By
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OCX Passes First Qualification Raytheon, US Air Force Complete Test Milestone On March 4, Raytheon successfully passed the first formal qualification test milestone for the U.S. Air Force’s GPS Next Generation Operational Control System (GPS OCX). The new system offers significant improvements to the GPS on which the U.S. military and millions of civilians rely, including enhanced availability, accuracy and... read more

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China launches 21st Beidou navigation satellite

February 1, 2016By
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China has launched its 21st BeiDou satellite into orbit, according to Xinhua News Agency, the official press agency of the People’s Republic of China. The launch took place at 3:29 p.m. Beijing Time (07:29 UTC) on Monday, Feb. 1. Launched from Xichang Satellite Launch Center in the southwestern province of Sichuan, the satellite was boosted by a Long March-3C carrier rocket... read more

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Expert Opinions: How many GNSS signals for a consumer-grade device?

December 23, 2015By
Greg-Turetzky-T

Question: What is the optimum number of GNSS signals to include/process in a consumer-grade PNT device? A: A chip should support four signals, being GPS/GLONASS/Galileo/Beidou, but only process two of them — choice depending on region, geopolitical sensitivity, constellation availability — dropping to one to save power when satellite availability is good. Two constellations give enough satellites for accuracy and... read more

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Directions 2016: A new stage for the development of BeiDou

December 16, 2015By
Shuren Guo, deputy director of China Satellite Navigation Project Center.

In line with its three-step development plan, the BeiDou Navigation Satellite System (BDS) will constitute a complete space constellation by around 2020, when it will be comprised of five geosynchronous orbit (GEO) satellites and 30 non-GEO satellites, providing services for global users. read more

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Out in Front: GLAC issues BeiDou market projections

December 8, 2015By
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We have grown accustomed to seeing market projections for some GNSS, notably Galileo. European GNSS Agency economists have done a remarkable job analyzing and predicting the global market over the past five years. Business intelligence firms in the U.S. periodically report on the power of GPS driving, or participating in, significant portions of the U.S. economy. Figures from Russia are... read more

System of Systems: New BeiDou TMBOC Signal Tracked

November 11, 2015By

New BeiDou TMBOC Signal Tracked Similar Structure to Future GPS L1C China’s new third-generation BeiDou satellites are broadcasting some new signals in space. The newest signal, which just began broadcasting from a satellite launched on Sept. 30, is similar to the future GPS L1C signal with time-division BOC(1,1) and BOC(6,1) signals. Such a type of modulation is called time-multiplexed binary... read more

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JAVAD GNSS TRE-3 Successfully Tracks First Live TMBOC Signal

October 22, 2015By
JAVAD-TMBOC-O

The newly launched BeiDou Phase 3 satellites have several new signals. One is extremely similar to the future GPS L1C signal with time-division BOC(1,1) and BOC(6,1) signals. Such a type of modulation is called time-multiplexed binary offset carrier (TMBOC). (Read more about TMBOC in the June 2011 Innovation article “MBOC Signal Options: Performance of Multiplexed Binary Offset Carrier Modulations for Modernized... read more

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