The Business and Technology of Global Positioning, Navigation, and Timing

GPS World Industry leaders look to GPS World for continuous innovation in delivery of the freshest, most comprehensive GPS/GNSS-related news to high-level corporate managers, project and engineering managers, product designers, researchers, and system developers.

GPS World, the magazine, has covered the global positioning industry since 1989.

GPS World's market-segmented microsites are the freshest out-of-the-box tools for professionals in every tech field that uses or seeks to use global positioning, navigation, and timing. Use the tabs at the top of this page to access these highly targeted, highly accurate source materials.

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Read the Digital Issue: GPS World, September 2009

CONGO 56
First GPS/GIOVE Tracking Network for Science, Research
Selected results from the COperative Network for GIOVE Observation (CONGO) demonstrate how the global network provides early familiarization with the new Galileo signals and access to precise GIOVE orbit and clock information, to develop new processing techniques for multi-constellation, multi-frequency GNSS.
By Oliver Montenbruck, André Hauschild, Uwe Hessels, Peter Steigenberger, and Urs Hugentobler
ON THE EDGE
Sky-High Twists and Turns 64

RECEIVER DESIGN
Real-Time Software Receivers 40
Challenges, Status, Perspectives
A look at the challenges and current status of algorithms of code and carrier generation and baseband processing, including single-instruction multiple-data (SIMD) operations and bit-wise processing.
By Marcel Baracchi-Frei, Grégoire Waelchli, Cyril Botteron, and Pierre-André Farine

WIRELESS
Over-the-Air Test Method 48
A-GPS Antenna Performance Traditional testing of A-GPS device performance over a cabled RF connection, bypassing the GPS antenna and associated circuitry, does not give a complete picture of real-world performance and user experience. The OTA methodology described here ensures that all GPS antenna and device design factors are taken into account.
By Michael D. Foegelle, Ronald Borsato, Hakan Alparslan, and Brock Butler

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This is GPS World. But the magazine has never limited itself to coverage of the U.S. Global Positioning System. We have also chronicled the development of GLONASS and Galileo; of WAAS and LAAS and NDGPS and EGNOS and private correction services; of MSAS, and QZSS, and Beidou, and GAGAN, and GRAS.

In addition to this business of global navigation satellite systems, we examine many fellow travelers, the technologies that GPS has taken along for the ride in its efforts to achieve greater accuracy, availability, integrity, and robustness. We're talking inertial sensors, LORAN-C, lasers, LIDAR, electronic compasses, cellular signal positioning, video signal positioning, odometers, wheel speed sensors, ultra wideband, RFID, Bluetooth, DSRC, and more.

These draw our interest because GPS — as a concept now, not just a physical manifestation— has spread relentlessly, inexorably across the landscape, the seas, into air space, into outer space. It has dived deep into integration with these technologies, driven by designers and engineers crafting new solutions for challenging problems in the marketplace.

Wherever it goes, we follow. That's because we all need some understanding of, or at least familiarity with, integration issues to follow GPS/GNSS in its ever-widening sphere of influence.

And because our fold increases daily. GPS World readers now come from all high-tech sectors, as other industries realize they can benefit from high-accuracy position and timing. Thanks to our new Digital Edition, all qualified readers can now get GPS World.

We're global. We're about position. And we study systems. We're not only GPS. We're more.

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