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Inside GNSS • July/August 2013

Adding Intelligence to Receivers

GNSS receivers and users, along with the critical infrastructures and services they support, face a growing threat from jamming, spoofing, and meaconing (JSM) events.

Several proposals for GNSS spoofing detection and signal authentication have been proposed over in recent years. These have focused mainly on adding cryptography elements to the GNSS signals and detecting RF characteristics of undesired signals.

Inside GNSS • July/August 2013

Something Old, Something New

The past 15 years have witnessed tremendous developments of new and modernized satellite-based navigation (satnav) systems, including GNSSs, regional systems, and space-based augmentation systems (SBASs). These have been enabled by the original designs of GPS and GLONASS and, in turn, have stimulated the design of satnav signal structures with different characteristics from those pioneer systems.

July 14, 2013
Nashville, Tennessee USA
August 19, 2013 - August 24, 2013
Tokyo, Japan
Inside GNSS • May/June 2013

BeiDou Gets Ready for the Global Marketplace

The fourth China Satellite Navigation Conference (CSNC 2013) wound up its three-day run on May 17 in Wuhan — by all measures a clear success for an event that has become the nation’s leading international GNSS forum.  

A key take-away from the event: China is rapidly preparing to bring BeiDou products and technology into the international marketplace is encouraging its industry to build an internationally applicable knowledge base in standards, patent law, and intellectual property rights (IPR).  

Inside GNSS • May/June 2013

BeiDou

Since announcing plans in late 2006 to build its own GNSS system — BeiDou-2 (BDS), China proceeded quickly to establish a fully operational regional system late last year with a clear plan to complete a global system by 2020.  

Beginning with its first launch in April 2007, BDS has put 16 satellites in orbit, some in dual launches, with 14 BeiDou space vehicles currently transmitting healthy signals: 5 in geostationary orbits (GEO), 5 in inclined geosynchronous orbits (IGSO), and 4 middle Earth orbit (MEO) spacecraft.  

Human Engineering • May/June 2013

Di Qiu: Opportunities of Signals

SIDEBAR: Di Qiu's Compass Points

Landing all-weather aircraft safely in storms. Protecting sensitive data not only through encryption but based on the location at which it is being accessed. Ensuring that accurate and timely information reaches first responders responding to emergencies. 

Although still in the early part of her career, Di Qiu has already made significant contributions to these crucial applications of navigation technology. 

GNSS Solutions • May/June 2013

Calculating Time Offsets

Q: How do you deal with timing differences between GNSSs? 

A: All GNSSs inherently depend on precise timekeeping to measure the satellite/receiver time of flight of signal propagation with sufficient accuracy to compute ranges/distances for multilateration calculations. Each GNSS ground segment therefore dedicates considerable effort to maintaining a highly stable atomic time scale as well as the corresponding offset to global standards such as UTC (Coordinated Universal Time). 

Events • May 22, 2013

June 18 Webinar: GNSS /INS Integration Applications

Inside GNSS will host an applications-oriented web seminar on GNSS and inertial integrated systems on Tuesday, June 18.

The free event is sponsored by KVH Industries.

Webinar presenters are Xavier Orr, an R&D engineer of 3D navigation technologies at Advanced Navigation in Australia and Andrey Soloviev, principal at Qunav LLC and a research engineer who focuses on multi-sensor integration for navigation applications.

GNSS Solutions editor and University of Calgary professor Mark Petovello moderates.

December 2, 2013 - December 5, 2013
Bellevue (Seattle), Washington, USA
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GPS textbook
GPS Easy Suite II
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