CCTV & Electro Optics

CCTV is often wildly misunderstood for VTS and Coastal Surveillance applications. Whereas, for radar, there have been definitions established about the key radar parameters for specific targets, the same has not been defined regarding the use of CCTV / Electro Optics. CCTV requirements can often be specified without any reference to the size and type of target that the camera is expected to detect and therefore many VTS Centres under or over specify the technical requirements of the camera.

For radar it is common to specify the minimum size of target that should be detected and the range at which it should be detected. The same approach could be applied to CCTV / Electro Optic surveillance. In fact, other fields of surveillance typically specify optical sensors based upon ranges for Detection, Recognition and Identification (Johnson Criteria).
  • Detection is normally defined as being able to determine that an object is present.
  • Recognition means that you can determine the type of object
  • Identification means that the specific object can be discerned.
It is possible to set specific ranges and conditions for each of the above parameters so that a CCTV / Electro Optic solution can be tested and proven to meet the Operational Requirements