By contrast ,for support jamming the closer the jammer to threat radar , the easier it would be for the jammer to cover others assets because in this case aircraft reflection is not depend on the distance between the jammer and the threat radar so getting the jammer closer to the radar is better.
Due to the bigger size, jamming pod often have bigger transmitting antenna and more power available compared to FOTD decoys and air-launched decoys, as a result, they have higher effective jamming power and better directivity ( gain ). At start, the jammer sends back an amplified version of the signal received from the radar.
In recent years capability of radar deceptive jamming has been enhanced significantly with the development of Digital Radio Frequency Memory (DRFM) techniquesJammers with DRFM technology are widely reported in literatureÂ , for example ALQ-187(v)2 ,Â ALQ-131 EA PUP , Falcon edge , ALQ-211(V)9 , ALQ-214(V)3 , Spectra , is a technology in which a high-speed sampling digital memory is used for storage and recreation of radio frequency most significant aspect of DRFM is that as a digital duplicateâ€ of the received signal, it is coherent with the source of the received signal.
Noise jamming is the form of electronic countermeasure whereÂ jammer transmit an interference signal ( white noise) in enemy’s radar direction so that the aircraft reflection is completely submerged by type of jamming is also called â€˜denial jamming’ or â€˜obscuration jamming’.
Disposable decoys (also known as expendable decoys) are very small RF jamming devices that can be released by aircraft. Decoys are towed thus it will always stay behind the real platform hence, missiles with 2-ways datalink or command guide can render towed decoy ineffective (because adversary SAM operator, pilot can choose which target for missiles to attack).