ABSTRACT
Global Navigation Satellite Systems (GNSS) continue to evolve, offering improved service in their core uses of positioning, navigation and timing (PNT). Improved accuracy and robustness are being added through additional radio signals, and of course the four listed global constellations.
In addition, GNSS augmentation systems exist, and Australia are in the process of joining the club of states that provide improved accuracy and integrity for GNSS over their territory.
This update provides a brief background on GNSS and then summarises recent changes and their impact on GNSS users. It concludes with some insights into additional services that leverage GNSS in ways that were not intended and are not always widely known.
BIOGRAPHY
Craig is an executive director of Skykraft pty ltd, an Australian company that designs and builds small-satellite constellations. As the Chief Innovation Officer he is responsible for blending solutions to real-world problems with cutting edge space technology. Craig has a PhD in Electrical Engineering.
Craig is also a Visiting Fellow at UNSW Canberra (Australian Defence Force Academy) where he has taught subjects such as GPS, Electronic Warfare, Avionics, Surveillance Technology and Guided Weapons for the past 20 years. He began his career as an engineering officer in the Royal Australian Air Force, transferring to the reserve in early 2001.
Craig spent 5 years as author of the definition studies and then as engineering manager of the Australian Navigation Warfare acquisition project, being heavily involved in design and leading a large number of Navigation and Navigation Warfare (GPS jamming) trials. In his leisure time Craig is a keen endurance athlete focussed on Ironman triathlon and marathon running.