GNSS

Abstracts sought for ION GNSS+ 2017

November 28, 2016By

The Institute of Navigation is now seeking abstract submissions for its largest annual conference, ION GNSS+. ION GNSS+ is the world’s largest technical meeting and showcase of GNSS technology, products and services. This year’s conference will bring together international leaders in GNSS and related positioning, navigation and timing fields to present new research, introduce new technologies, discuss current policy, demonstrate... read more

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Research: Algorithm based on BeiDou/GPS/IMU and anomalous driving detection

November 21, 2016By

By Rui Sun and Hongyang Bai, Nanjing University of Aeronautics and Astronautics, and Ke Han, Jun Hu and Washington Y. Ochieng, Imperial College London. Presented at ION GNSS+ 2016. An Integrated Algorithm Based on BeiDou/GPS/IMU and its Application for Anomalous Driving Detection This paper introduces an integrated algorithm for detecting lane-level anomalous driving. Lane-level high accuracy vehicle positioning is achieved... read more

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4 Galileos launched at once, speeding constellation completion

November 17, 2016By
ariane_5_liftoff_on_flight_va233-o

An Ariane 5 rocket has launched four additional Galileo satellites, accelerating deployment of the new satellite navigation system. The Ariane 5, operated by Arianespace, lifted off from Europe’s Spaceport in Kourou, French Guiana, at 13:06 GMT (14:06 CET, 10:06 local time) carrying Galileo satellites 15-18. The first pair was released 3 hours, 25 minutes after liftoff, while the second separated... read more

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Research: Accelerating GNSS software receivers

November 16, 2016By
Diagram of Typical Code and carrier tracking loops in a GNSS receiver. Colored dotted-line boxes show functions implemented in SIMD technology. Lanes “16ic” are data streams whose items are complex numbers with real and imaginary components represented with 16-bit integers, whereas “32fc” indicates those with complex numbers with real and imaginary components in 32-bit floating point representation.

By Carles Fernandez–Prades, Javier Arribas and Pau Closas, Centre Tecnologic de Telecomunicacions de Catalunya, Spain. Presented at ION GNSS+, September 2016. This paper addresses both the efficiency and the portability of a computer program in charge of the baseband signal processing of a GNSS receiver. Efficiency, in this context, refers to optimizing the speed and memory requirements of the software... read more

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4 Galileos a ‘go’ for Thursday launch

November 15, 2016By
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This week’s Arianespace flight with four European Galileo navigation system spacecraft has been approved for a morning liftoff on Nov. 17 following the launch readiness review held Monday at the Spaceport in French Guiana. Designated Flight VA233 in Arianespace’s numbering system, the launch will deploy its quartet of Galileo spacecraft during a nearly four-hour flight, with liftoff set at exactly 10:06:48 a.m.... read more

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Arianespace ready to roll out 4-satellite launcher for Galileo

November 14, 2016By
The protective fairing is lowered onto the four Galileo satellites and their dispenser resting atop an Ariane 5 launcher. The fairing was placed on Nov. 3. (Photo: ESA)

Arianespace has entered the final phase of preparations for its next Ariane 5 launch — the company’s first heavy-lift mission to orbit satellites for Europe’s Galileo navigation constellation. During activity in the Spaceport’s Final Assembly Building, Arianespace “topped off” the Ariane 5 launcher with installation of the payload fairing over the four Galileo spacecraft and their payload dispenser. With Ariane 5... read more

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Roscosmos could launch up to 4 replacement GLONASS in 2017

November 14, 2016By
GLONASS-M-51-launch-2

Russia’s Roscosmos space agency could launch up to four GLONASS navigation satellites in 2017, reports sputniknews.com. The satellites will be launched only to replace malfunctioning satellites if necessary, according to Deputy Director General for Automatic Space Complexes Mikhail Khailov. “It is planned to carry out up to four launches [of GLONASS satellites] in 2017 … We will carry them out only when... read more

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China launches pulsar navigation satellite

November 14, 2016By
XPNAV-1 (Image Source: Weibo)

China has successfully launched a navigation satellite that will conduct in-orbit experiments using pulsar detectors to demonstrate new technologies, reports The Indian Express. The X-ray pulsar navigation satellite XPNAV-1 was launched Nov. 10 atop a Long March 11 solid-fueled rocket from the Jiuquan Satellite Launch Center in China’s northwest. The experimental pulsar navigation mission carries two sensors to pick up... read more

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