Dual common channel cross-track system (U)

摘要

A "cross-eye" type radar countermeasure in which both of the waveforms of the illuminating signal from the enemy radar received at spaced locations on the carrying vehicle is propagated through a common dual channel to balance the effect of unintentional phase distortion. Two common channels receive the radar waveform and store the same in a delay line. During the stored interval the switches at the ends of the two common channels are transitioned to the non-stable state connecting the output end of one common channel to the input end of the other, and vice versa. Both waveforms then enter the delay line of the subsequent common channel and the switches change to the stable state whereupon each waveform is retransmitted at the other spaced location on the carrying vehicle. A very accurate phase shift of 180° is introduced into a non-common waveguide and causes an out-of-phase relationship between the two retransmitted radar pulse to create the "cross-eye" type of phase front distortion of the return to the victim radar.