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Passive bistatic radar based on target illuminations by digital audio broadcasting

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2 Author(s)
Coleman, C. ; Sch. of Electr. & Electron. Eng., Adelaide Univ., Adelaide, SA ; Yardley, H.

A practical passive bistatic radar that is based on target illuminations by digital audio broadcasts is described. As with all such radars, direct signal interference (DSI) is identified as a major limitation, the effect being exacerbated by the multiplicity of illuminators. In addition, such multiplicity can also make the extraction of the original transmitted signal difficult. DSI is reduced by a combination of analogue and digital null formation and isolation by use of cross polarisation. Fast techniques are developed for signal extraction and digital null formation, allowing these operations to be achieved in real time. Both the hardware and algorithms of the system are described and representative radar observations are included to show the systems effectiveness.

Published in:

Radar, Sonar & Navigation, IET  (Volume:2 ,  Issue: 5 )