Delay Control for a Pulse Repeat-Back Jamming System.
DEPARTMENT OF THE NAVY WASHINGTON DC
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In a repeat-back jammer of the type used to deceive range tracking radar systems, wherein tracking is accomplished by a gate at the input of said radar system and a servo system which adjusts the relative time position of the input gate to coincide with echo pulses returning from a distant target, and wherein said jammer includes a repeat-back amplifier which transmits a jamming pulse for each said echo pulse the initial jamming pulse being so delayed with respect to said echo pulse that only a minor portion of said jamming pulse coincides with said input gate, said jamming pulse being of sufficient amplitude that said minor portion obscures the echo pulse, the improvement which comprises time delay means to increase said initial dealy of said jamming pulse with respect to said echo pulse in response to a control signal, wave generating means to supply a control signal for said time delay means and a multiplier means for multiplying said signal by 1 - micronsobetao interconnecting said time delay means and said wave generating means, wherein micronsobetao is the open loop transfer function of said servo system. Author
- Radar Countermeasures
- Active and Passive Radar Detection and Equipment