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The RR-144 is designed to prevent interference with civil ATC radar systems. Chaff, originally called Window [1] or Düppel, is a radar countermeasure involving the dispersal of thin strips of aluminium, metallized glass fiber, or plastic. [2] Dispersed chaff produces a large radar cross section intended to blind or disrupt radar systems. [3]
Mechanical jamming is caused by devices that reflect or re-reflect radar energy back to the radar to produce false target returns on the operator's scope. Mechanical jamming devices include chaff, corner reflectors, and decoys.
World War II ECM expanded to include dropping chaff (originally called Window), jamming and spoofing radar and navigation signals. [1] German bomber aircraft navigated using radio signals transmitted from ground stations, which the British disrupted with spoofed signals in the Battle of the Beams .
When jamming is strong enough, the radar receiver can detect it from a relatively low gain sidelobe. The radar, however, will process signals as if they were received in the main lobe. Therefore, jamming can be seen in directions other than where the jammer is located. To combat this, an omnidirectional antenna is used for a comparison signal ...
Days later, the Air National Guard claimed a C-130 traveling back from a training exercise had released a massive cluster of chaff – or radar-jamming material – from its innards, briefly ...
Chaff – shorter-length Window for use against possible German development of microwave radar, e.g. Berlin. Chain Home radar – British land-based early warning radar used during the Battle of Britain - from TRE. Düppel – German radar countermeasure called chaff in the US or Window in Britain.
An electronic-warfare aircraft is a military aircraft equipped for electronic warfare (EW), that is, degrading the effectiveness of enemy radar and radio systems by using radar jamming and deception methods. [1] In 1943, British Avro Lancaster aircraft were equipped with chaff in order to blind enemy air defence radars.
For this purpose B-24 Liberators and B-29 Superfortresses were fitted with radar-homing devices to conduct "ferret" missions to locate and identify radar transmissions. The information brought back from these missions was used to outfit other B-29s with radar jammers and chaff to confuse Japanese air defense radars as they conducted their ...