From the Magazine

Collaborative Signal Processing

February 1, 2014By
Soloviev-O

More Receiver Nodes Bring Ubiquitous Navigation Closer
Encouraging results from new indoor tests and advances in collaborative phased arrays come from MUSTER: multiple independently operating GPS receivers that exchange their signal and measurement data to enhance GNSS navigation in degraded signal environments, such as urban canyons and indoors. read more

Quad-Constellation Receiver: GPS, GLONASS, Galileo, BeiDou

January 8, 2014By

The implementation changes and first live tests of BeiDou and Galileo on Teseo-3 GNSS chips developed in 2013 are covered, bringing it to a four-constellation machine. By 2020, we expect to have four global constellations all on the same band, giving us more than 100 satellites — under clear sky, as many as 30 or 40 simultaneously. read more

Directions 2014: Serve the World, Benefit Mankind — A System Matures

December 1, 2013By
Distribution of visible in-orbit BeiDou satellites.

By adhering to the principles of independence, openness, compatibility, and gradualness, China has steadily pushed forward the deployment of the BeiDou Navigation Satellite System (BDS), following a planned three-step strategy. In 2000, BeiDou Navigation Satellite Demonstration System was completed. By December 2012, five geostationary orbit (GEO) satellites, five inclined geosynchronous orbit (IGSO) satellites, and four medium-Earth orbit (MEO) satellites had been launched, forming the constellation, and formally beginning service provision to the Asia-Pacific region. read more

Directions 2014: On the Path to Early Services

November 26, 2013By
Galileo-2-O

By Eric Chatre, Horst Faas, and Marco Lisi With four satellites in space, launched by pairs in October 2011 and October 2012 from French Guiana, the Galileo project is now successfully completing the In-Orbit Validation (IOV) phase. The Galileo space, ground, and user segments have been qualified through extensive on-ground and in-orbit tests, and operations, of a core satellite constellation... read more

This article is tagged with and posted in Featured Stories, From the Magazine, Galileo

New Structure for GLONASS Nav Message

November 2, 2013By
Glonass-K-W

Russian scientists propose a new code-division multiple-access signal format to be broadcast on a new GLONASS L3 signal. Once implemented across the modernizing GLONASS constellation, this will facilitate interoperability with — and eventually interchangeability among — other GNSS signals. The flexible message format permits relatively easy upgrades in the navigation message, if required. read more

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

Putting the (ultra-low) Power in GeoFence

October 31, 2013By
malkos_opener_O

Users of smartphones, tablets, and other devices expect position with the highest level of accuracy, always available, with the least amount of power consumed. One recent improvement fulfilling this demand involves operating-system services for location on smartphones, and the evolution towards lower power solutions. read more

Real-Time GNSS Activities at ESA

October 28, 2013By
The ESA Navigation Office.

The European Space Operations Centre has taken on the roles of real-time analysis center, data provider, and analysis-center coordinator for the International GNSS Service’s Real-Time Service, providing a number of products combining data streams from multiple sources. read more

This article is tagged with and posted in Augmentation & Assistance, Featured Stories, From the Magazine, Galileo

Synchronized Ground Networks Usher in Next-Gen GNSS

October 1, 2013By
LocataLite installation showing Jps transceiver tower.

An integrated GNSS+Locata system installed on drills, shovels, and bulldozers — the full complement of high-precision machines on site — at Australia’s Newmont Boddington Gold Mine has increased positioning accuracy and availability, as well as mine operational efficiencies, demonstrating an improvement in availability over GNSS-only of 75.3 to 98.7 percent. read more