Describing multifunction adaptive phased array radars

The plain old radar system (PORS) may not perfectly describe any single radar but the concept will be immediately recognised by anyone working in the fields of radar or simulation and modelling of radar. PORS, typically, uses a mechanically scanned dish aerial with a fixed beam shape. The aerial rotates at a constant rate to survey a volume of sky. The coverage and field of view are predetermined by the aerial design and its scanning mechanism. PORS is, typically, a single pulse radar, i.e. there is no storage and integration of returns from multiple pulses to enhance signal to noise ratio. If a tracking function is available it may be achieved using track while scan (TWS) algorithms. PORS will, generally, have a limited repertoire of waveforms it can transmit and its relatively limited signal processing capabilities may be implemented using hardware rather than software. Further, PORS is “self contained”: its functionality is incorporated in its initial design and there is no influence on its basic function by outside influences. Thus, the operation of PORS is invariant irrespective of target density and environmental conditions