Can GPS be used to detect underground nuclear explosions? A research team is developing a software program that uses GPS to analyze the ionospheric effect of nuclear explosions. Results would show when and where a country has conducted a secret underground nuclear test. More>>

"E
mergency Alert: Bus collision in Berchtesgaden, parking area Salzbergwerk. Many injured. Bus overturned, some thrown from vehicle, some trapped inside. Local temperature below freezing, snow falling. All crews respond immediately.” 
 The alarm operations center for the state of Bavaria...More>>

Geodesy is a suite of powerful Earth-observation techniques, associated methodologies, and analysis tools that today are making a vital contribution to science and society. Yet geodesy is not a new, child-of-technology sciaence. It dates back hundreds of years — some would claim thousands of...More>>

A receiver can selectively acquire scattered signals and the resulting measurements can be interpreted to reveal certain characteristics of the source of the scattering. This article discusses the design and application of a GNSS instrument that uses scattered signals for monitoring the level and...More>>

A team of Swiss researchers is using data from a network of GPS receivers and the technique of tomography to obtain profiles of how moisture is distributed with height, which might lead to better weather forecasts. More>>

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...More>>

The Advanced Data Link (ADL) Sentry is a UHF radio for remote communications. A high-speed data radio modem designed for rugged environments of remote sensing, machine control, and environmental monitoring, it joins a product lineup comprising the ADL Foundation, a transceiver OEM modem board; the...More>>

The September “Innovation” column in this magazine, “It’s Not All Bad: Understanding and Using GNSS Multipath,” by Andria Bilich and Kristine Larson (see www.gpsworld.com/multipath), mentions the use of multipath in studying soil moisture, ocean altimetry and winds, and snow...More>>

More than 60 percent of the primary forest of tropical ecosystems has already been lost, and government agencies are struggling to prevent further destruction. In Honduras, GIS techniques, lifestyle surveys, and satellite imagery of forested areas all helped to determine the variables that predict...More>>

Recent investigations have demonstrated that GPS might be an effective tool for improving the tsumani early-warning system through rapid determination of earthquake magnitude using data from GPS networks. A less obvious approach is to use the GPS data to look for the tsunami signature in the...More>>