March/April 2008

» Full table of contents (print edition)

» Subscribe to the print edition for free.
    Allow 6 to 8 weeks for your subscription to be processed.

When it comes to providing attitude or designing a pointing system—say, for controlling an airborne antenna or guiding a tank–GPS can use some help. Researchers at SRI developed a MEMS IMU combination that provides suitable accuracy.

As they shape a new acquisition plan, leaders of the Galileo project will soon discover if a public partnership will lead to success.

Have SAASM-ISER, will travel. . . this new mobile laboratory incorporates a GPS signal simulator and can test weapon systems with integrated Selective Availability Anti-Spoof Module security architecture at the platform's home station.

The ability to receive low-power GNSS signals inside buildings wins the gold medal for product designers and manufacturers who can achieve it. The authors share results of a new test that creates an original model of signal behavior in indoor spaces of different shapes and material. First of two parts.

This geomatics engineer pioneered the use of GPS in Latin America—now he wants to integrate all of Brazil's geoscience data into layers of information available to everyone over the Internet.

What does “geometry-based” and “geometry-free” mean in the context of GNSS? What are the main classes of interference that can degrade the GNSS signals? What are the possible countermeasures?  

All four major GNSS programs seem to have reached the same passage —not quite an impasse, but a definite narrowing of the political space.