DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
ELECTRONIC COUNTERMEASURES SET AN/ALQ-17 (XY-2) VOLUME I. TEXT
ITT FEDERAL LABS NUTLEY N J
This effort resulted in the successful development of an airborne false target repeater, covering essentially the entire 2000 to 4000 mc frequency range. This represents an eightfold increase of frequency coverage over the initial feasibility model, ANALQ-17 XY-1 which had a bandwidth of but 250 megacycles. Two particular advantages of the system are immediately apparent. First, the repeater techniques employed result in transmission of false target signals at a frequency identical to the true aircraft echo, including the same doppler shift. Further, frequency modulation present in the radar signal will also be repeated. These advantages are obtained by employing RF storage, which is accomplished by the use of ultrasonic fused silica delay lines. The equipment bandwidth coverage was made practical by an improvement in the state-of-the-art of the delay lines, which has resulted in the development of wideband high frequency lines 40 mc wide centered at 60 mc. Author
Final engineering rept.
Approved for public release;Distribution unlimited.
AF33 604 16140