Inside GNSS: Engineering Solutions from the Global Navigation Satellite System Community
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Inside GNSS magazine • Volume 1, Number 2

March 2006

Online News, Articles, and Features

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Cover Story

Taking the Show on the Road: GPS Drives U.S. Mobile Resource Management Growth

Mobile Resource Management (MRM) systems use GPS to monitor – and, of course, manage – every corporate asset that moves. Fleet vehicle tracking or AVL (Automatic Vehicle Location) has been growing steadily since the late 1980s. Today, the long haul trucking segment shows signs of maturing. It has become part of a larger, faster-growing market – Mobile Resource Management. 

Human Engineering

Michael Braasch: Dr. Braasch’s Opus

GPSsoft Technical Director Is a Teacher at Heart

Michael S. Braasch got his GNSS start trying to crack Selective Availability. But that’s not all — he is the cofounder and technical director of GPSoft LLC, which produces a series of navigation “toolboxes” for MATLAB, the engineering software environment used worldwide.

Technical Article

Building Monitors

The Complementary Characteristics of GPS and Accelerometers in Monitoring Structural Deformation

A multinational team of researchers outfitted a building in Tokyo to measure the effects of natural phenomena on structures. But that posed a new challenge: converting diverse data into a common analytical framework. Then a typhoon and earthquake came along and gave them the answers they were looking for.

Technical Article

Kalman Filter Face-Off: Extended vs. Unscented Kalman Filters for Integrated GPS and MEMS Inertial

GPS and micro-electro-mechanical (MEMS) inertial systems bring
complementary qualities to integrated positioning systems. But what
Kalman filtering design works best for putting these two technologies
together in land navigation?

Technical Article

Testing the Limits of Power

A Methodology for Measuring the Power Consumption of Indoor-Outdoor Tracking GPS Receivers

All GPS receivers are not created equal — especially in matters of power usage. Neither are applications nor operating environments. An engineering team nails down the variables for measuring performance in high-sensitivity receivers.

Columns & Editorials
GNSS Solutions

Carrier Phase Ambiguity Resolution, GNSS Use In Cellular Telephone Systems, and New Antennas?

Thinking Aloud

Hardware Versus Software

The physical and political sciences of GNSS

But GNSS is not just physical science, but political science, too. The sound bite as much as the kilobyte. Economics as well as ergonomics. The nanometric microcosm, but also the macrocosm of nations and cultures. How else do we explain the multibillion-dollar infrastructures, programs, posturing, and policy directives?

Working Papers

Platforms for a Future GNSS Receiver

A Discussion of ASIC, FPGA, and DSP Technologies

Since introduction of the first GPS receivers more than a quarter century ago, GNSS equipment has changed profoundly – from racks of computers and 25-pound “manpacks” into tiny integrated circuit chipsets suitable for inclusion in mobile phones and other portable devices. But the evolution of GNSS form factors is far from ended. Indeed, the appearance of new GPS and GLONASS signals and the arrival of Galileo has injected new vitality into design of GNSS products. This installment of Working Papers traces the trajectory – past, present, and future – of that technological evolution.

360 Degrees
New Products
30 • GNSS-Related Hardware

CAST Navigation CAST-5000

32 • GNSS Chipsets

Atmel Antaris 4

33 • GNSS Chipsets

SiGe Semiconductor SE8088L/SE8901L

34 • Integrated Devices

BEI Systron Donner MMQ-G

Jammer Dectector
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