Posted by Andrew Haylett, Cambridge Pixel

Signal Processing Applications


Countering the growing "backdoor" threat posed by terrorists, smugglers, pirates, and political activists at military air and naval bases, airports, and ports requires sophisticated multisensor surveillance systems to ensure that incursions are rapidly detected and actioned. A hybrid approach that brings together conventional radar systems with high-resolution video imaging sensors, radar, and video trackers - incorporating Automatic Dependent Surveillance - Broadcast (ADS-B) and Automatic Identification System (AIS) transponder technology to filter out authorized targets - can deliver the high-accuracy threat detection needed even in adverse climatic conditions and poor visibility.

A typical secured site presents multiple challenges to the deployment of an effective surveillance and security system. The layout of the site may mean that certain locations are hidden from the view of a given sensor, resulting in a security vulnerability unless steps are taken to improve coverage. Differentiation between real threats and legitimate movements, both outside and within the site, is essential to avoid real incursions becoming “lost in the noise.” Moreover, these threats may take multiple forms – unauthorized individuals/insurgents, vehicles or vessels, or airborne objects including small malicious drones may all represent real incursions; a surveillance system needs to provide early detection of all anticipated threat types.[Continue reading →]

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