Computer software including computer software for image processing, computer software for surveillance, computer software for video processing, computer software for use in image analysis, computer software for processing digital images, computer software for use in detecting targets in synthetic aperture radar (SAR) imagery; computer system comprised of computer hardware and software systems incorporating a set of image processing algorithms and a framework to undertake synchronisation, control and data flow between the algorithms; training materials (apparatus); training guides and manuals in electronic format; target location apparatus (electronic); target surveillance apparatus (electronic); target surveillance apparatus (surveillance); target trackers (electronic); target trackers (satellite); detection apparatus and instruments (other than for medical use)