Machine Control/Ag

Real-Time Extended GNSS Positioning: A New Generation of Centimeter-Accurate Networks

July 1, 2012By
FIGURE 2. CenterPoint RTX tracking network distribution. (Click to enlarge.)

A new method brings together advantages of real-time kinematic (RTK) and precise point positioning (PPP) in a technique that does not require local reference stations, while still providing the the high productivity and accuracy of RTK systems with the extended coverage area of solutions based on global satellite corrections. The real-time centimeter-level accuracy without reference-station infrastructure is suitable for many market segments — and is applicable to multi-GNSS constellations. read more

Expert Advice: Give Us This Day Our Daily Bread

January 1, 2012By

Across transportation, agriculture, industry, commerce, and finance, GPS has replaced earlier technologies, opened up innovative applications, and led to new ways of doing old things. GPS now plays a key role in the critical infrastructures of all industrialized nations, from the most sophisticated telecommunications system to the production of a simple loaf of bread. Wheat is the world’s second staple food, and bread its main product. Bakers have been around for 30,000 years. GPS, among its manifold other duties, now also helps bring us our breakfast toast and midday sandwich. read more

On the Edge: Go Big Green

December 1, 2011By

Nav On Time, a French Company located in Toulouse, has successfully completed a trial campaign of its Mow-By-Sat precision guidance on a commercial lawnmower. In August, the prototype of a GPS-guided robot lawnmower was installed on a golf driving range near Toulouse and tested in real conditions of use, day and night, maintaining a 25,000 square meter lawn since then. In a previous campaign, the mower covered more than 2.2 million yards — equal to1,250 miles or 2,000 kilometers — in 2,100 hours. (See videos of the mower in action at www.youtube.com/DSnavontime.) read more

The Business and Product Showcase — December 2011

December 1, 2011By

Download the PDF of The Business and Product Showcase sections from the December 2011 issues here. read more

This article is tagged with and posted in LBS/Wireless, Machine Control/Ag, OEM, Survey, System and Business News, The Business

Zoning in on Assets: Cubic Global Tracking Gets Iridium Certification

August 1, 2011By

A system that tracks and monitors valuable high-risk assets for defense and commercial customers has received certification from Iridium Communications, increasing the system’s accuracy and effectiveness. The Iridium constellation of low-Earth satellites provides voice and data services for areas not served by terrestrial communication networks. The Global Sentinel System, by Cubic Global Tracking Solutions, tracks and monitors assets with two-way, redundant encrypted communications. The system provides up to 2,000 unique geozones for each Global Sentinel device to control precise reporting rules along the supply chain. It can monitor asset conditions including temperature, humidity, light sensing, motion, and container door status. read more

GPS World: 20 Years Young, 1990-2010

August 1, 2010By

A look at how things have changed since GPS World began, with participation by CAST Navigation, Hemisphere GPS, ITT, Rakon, and Spirent Federal. read more

This article is tagged with and posted in GNSS, Government, LBS/Wireless, Machine Control/Ag, OEM, Survey, Transportation

Sensor Fusion in Forestry

July 1, 2010By
Robotic wood harvester.

Modern machines such as wood harvesters can automatically cut trees and remove branches, but an expert is still needed to plan a thinning and to mark the trees to be felled. The process can be accelerated if the forest ranger can virtually mark trees to be cut, using geographic coordinates instead of colored crosses sprayed on the stems. This requires the robotic wood harvester to be able to locate itself accurately to enable automatic navigation to the next tree for cutting. Absorption of the GPS signal in the forest canopy leads to poor results, however, with errors up to 50 meters and more. read more

This article is tagged with and posted in Machine Control/Ag, Natural Resources, Sensor Fusion