Andrew G. Dempster

The Garada project, funded by the Australian Space Research Program, aims to establish an Australian space engineering capability to provide a disaster-monitoring earth observation system. Satellite-borne earth observation is very important for Australia and for other countries that need to monitor...more >>

A team of Australian and U.S. researchers have integrated a ground-based system with GPS and INS to create a hybrid system that provides precise and accurate position information continuously in a variety of environments where GPS alone comes up short.

In the electronic world, we are often faced with noisy signals. We can reduce an undesirable component in a signal, analog or digital, by using a filter. A special type of filter - the comb filter - can be used where the desired signal or the noise has equally spaced frequency components. Could...more >>