Compass/Beidou

January 24, 2017

State of Play in China

The BeiDou Navigation Satellite System (BDS) is China’s contribution to the world in the domain of Global Satellite Navigation System (GNSS). The BDS is being developed by the Chinese government, mainly through military departments, with key considerations for China’s national security, economic interests and social progress.

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By Ingo Baumann
January 19, 2017

ESA Puts Brave Face on Galileo Clock Failures

Passive hydrogen maser atomic clock of the type flown on Galileo, accurate to one second in three million years. ESA photo

At the traditional January media briefing in Paris yesterday (January 18, 2017), European Space Agency (ESA) General Director Jan Woerner was forthright in laying out the knowns and unknowns about the failed rubidium and hydrogen maser clocks onboard orbiting Galileo satellites, clocks that are absolutely crucial for accurate positioning.

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By Inside GNSS
November 30, 2016

GPS, GLONASS, Galileo, and BeiDou for Mobile Devices

The navigation sensors for location-based services (LBS) are complex technical systems. Modern technical science can answer most questions about the optimality of particular position determination methods, signal processing algorithms, electronic circuits or similar well-defined problems, but the rigorous answer to the questions concerning the optimal LBS positioning sensor are still a big problem.

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By Inside GNSS
June 15, 2016

China Places 23rd BeiDou Satellite into Orbit

A Long March-3C carrier rocket carrying the 23rd satellite in the BeiDou Navigation Satellite System (BDS) lifts off from Xichang Satellite Launch Center on June 12, 2016. (Xinhua photo/Yang Zhiyuan)

China launched another BeiDou satellite on Sunday (June 12, 2016, local time) to support its GNSS constellation.

The satellite, launched from the Xichang Satellite Launch Center in southwest China’s Sichuan Province, was taken into orbit by a Long March-3C carrier rocket. It is the 23rd satellite in the BeiDou Navigation Satellite System (BDS), a new-generation BeiDou-2 spacecraaft, and the seventh geostationary Earth orbit satellite (GEO) in the BeiDou constellation.

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By Inside GNSS
May 26, 2016

2016 ITS & LBS China Expo

A view of the Shenzhen Convention and Exhibition Center

The 5th International Intelligent Transportation System and Location-based Services expo will take place in Shenzhen (深圳), China on June 17, 18 and 19, 2016. It will take place in Hall 9 of the Shenzhen Convention and Exhibition Center in the city center.

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By Inside GNSS
April 5, 2016

China Launches BeiDou IGSO Spacecraft

With little fanfare or prior announcement, China launched another second-generation BeiDou Navigation Satellite System (BDS) satellite last week, the 22nd in the nation’s GNSS program.

The satellite launched from the Xichang Satellite Launch Center in the southwestern province of Sichuan on March 29 local time on board a Long March-3A carrier rocket.

An inclined geosynchronous orbit (IGSO) spacecraft designated Beidou-2 IGSO-6, it is expected to operate at an altitude of about 22,000 miles (35,400 kilometers) with an inclination of about 55 degrees.

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By Inside GNSS
March 28, 2016

GNSS Hotspots

One of 12 magnetograms recorded at Greenwich Observatory during the Great Geomagnetic Storm of 1859
1996 soccer game in the Midwest, (Rick Dikeman image)
Nouméa ground station after the flood
A pencil and a coffee cup show the size of NASA’s teeny tiny PhoneSat
Bonus Hotspot: Naro Tartaruga AUV
Pacific lamprey spawning (photo by Jeremy Monroe, Fresh Waters Illustrated)
“Return of the Bucentaurn to the Molo on Ascension Day”, by (Giovanni Antonio Canal) Canaletto
The U.S. Naval Observatory Alternate Master Clock at 2nd Space Operations Squadron, Schriever AFB in Colorado. This photo was taken in January, 2006 during the addition of a leap second. The USNO master clocks control GPS timing. They are accurate to within one second every 20 million years (Satellites are so picky! Humans, on the other hand, just want to know if we’re too late for lunch) USAF photo by A1C Jason Ridder.
Detail of Compass/ BeiDou2 system diagram
Hotspot 6: Beluga A300 600ST

 Dangerous Games in Rio, Animal Trackers, Chinese Logistics and The Radiation Club

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By Inside GNSS
March 16, 2016

OriginGPS Shrinks Multi-GNSS Module

OriginGPS has launched its Multi Micro Spider multi-GNSS module, which features a 5.6 x 5.6-millimeter footprint and 2.65-millimeter height.

Like its predecessor, the Multi Micro Hornet (which measured 10 x 10 x 6.1 millimeters), the ORG4033 uses MediaTek’s MT3333 and is positioned for applications that require minimal power consumption and ultra-small form factors, ranging from wearables to drones. Unlike the Hornet, the Multi Micro Spider supports Europe’s Galileo system as well as GPS, GLONASS, and BeiDou.

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By Inside GNSS
March 15, 2016

GNSS Leaders Reveal Plans at Munich Summit

Representatives of the world’s GNSS providers outlined the current plans and progress of their systems at the 2016 Munich Satellite Navigation Summit in Germany.

BeiDou has entered its transition period from Phase II to Phase III, with test and validation of the next phase with its new signal structures and frequencies taking place through the second half of 2017, said Jun Shen, deputy director for International Research at the China Satellite Navigation Office. In the meantime, “there will be a coexisting of Phase II/III BeiDou signals.

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By Inside GNSS
February 2, 2016

China Launches New MEO BeiDou Satellite; 18 More to Come by End of 2018

Ran Chengqi, director of the China Satellite Navigation Office

[Updated February 5, 2016] China successfully completed its first BeiDou launch of the year, lifting a new-generation satellite into orbit yesterday (February 1, 2016) and adding to its 17 operational spacecraft in the nation’s GNSS constellation.

The fifth of the new series, the middle-Earth-orbiting (MEO) satellite will join its four predecessors in testing inter-satellite crosslinks and a new navigation payload that will set the framework and technical standards for global coverage, according to the Xinhua state news agency.

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By Inside GNSS