Space-based systems have developed with enormous rapidity since the early years; in number, complexity and cost. The technology has been embraced internationally by military, scientific and commercial users. The exploitation of space by the super powers created a new dimension of military activity. Space is often referred to as the 'fourth dimension' of warfare, characterised by its own doctrines, strategies and operations.

The aim of this book is to provide an educative overview covering space, space operations and space applications. Exceptions to this general approach are made where the ADF is procuring a specific system or capability, for example: the GPS NAVSTAR space-based navigation system, or the MILSATCOM satellite communications project. Such systems and capabilities will be presented in detail, as they directly impact ADF operations.