Wireless Choices for LBS — Control Plane and User Plane Architectures Mar 2, 2006 By: Arnold Gum, Kirk Burroughs

The choice between two standardized architectural approaches to deploying A-GPS location services — control plane and user plane — can influence the quality, applicability, and success of the service offering. Differing requirements for both voice-centric and application-centric applications drove the need for two different location architectures, which provide operation tailored to two different types of needs.

Call Me a Cab Network Links GPS-AVM Systems Mar 1, 2006 By: Noriyuki Tsukada, Kunimichi Takada

Different forms of public transportation — such as railways, buses, and taxis — must be integrated into one public transport system that can provide the same mobility and accessibility as privately owned cars.

Wireless Choices for LBS - Addenda

Guided to Gather — Toy Plane Upgraded with Telemetry Feb 1, 2006 By: Vanessa Espinar, Dana Wiese

GPS/INS and infrared optical sensors propel USGS's transformation of a remote-controlled one-quarter–scale recreational aircraft into a low-cost unmanned aerial vehicle designed for environmental particulate collection.

Hurricane Hunters GPS Dropsondes Trace Katrina's Course Oct 1, 2005 By: Marty Whitford

GPS dropsondes released into the Katrina's eyewall tracked and predicted wind strength, speed, and direction.

Myths and Realities of Anywhere GPS High Sensitivity versus Assisted Techniques Sep 1, 2005 By: Chris Carver

AGPS does not mean works "Anywhere" GPS. Accurately determining what will work for any given application requires a properly designed test procedure.

Low-cost sensors and a Horizontal Trust Level (HTL) enable mobile-terminal applications requiring continuous quality of service in positioning and integrity.

Flexed for Flight Tightly Coupled Integrated Nav System Adapts to Data Formats Jun 1, 2005 By: José Filipe Lorga, Qi Ping Chu, Wim van Rossum, Bob Mulder

New MiniSAR aids motion compensation, photogrammetry, autonomous vehicle navigation, and aerodynamic modeling.

Moving Platform Orientation for an Unexploded Ordnance Discrimination System May 1, 2005 By: Dan Steinhurst, Nagi Khadr, Bruce Barrow, Herb Nelson

High-precision GPS and inertial technology position sensor platforms to profile underground objects accurately enough to determine if they are unexploded ordnance (UXO) or other items.