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Dead Reckoning

Dead Reckoning is a recent technology designed to increase the accuracy of GPS while on foot or in a

vehicle. Dead reckoning systems continue logging accurate locations where GPS signals are blocked due to

steep canyons walls or dense forest canopy. It works by a computer determining position by obtaining input

from sensors for heading and distance traveled, and calculating coordinates based on the previously

determined position.

Manufacturer

Dead Reckoning Systems

Point Research Corp.

714-557-6180

http://www.pointresearch.com

Trimble

http://www.trimble.com

Photo

Price

$1,995

Model

Pointman Dead Reckoning Module

Placer 455DR

Notes

Module is used to supplement GPS receivers

for navigation on foot. Contains compass,

pedometer and altimeter sensors that calculate

position relative to an initialization point.

Module supplements GPS in vehicle

applications only. Unit uses vehicle odometer

as input for distance and a Piezoelectric gyro

for heading. There is no sensor for vertical

position (elevation).

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C Technologies Mobile Information Collector C-Pen Manual do Utilizador Página 55