An IF amplifier and detector were designed for a noncoherent MTI radar. The amplifier was designed to satisfy the following two requirements: A, The amplifier must not overload; saturation due to large signals is not permitted. B. When strong clutter is present, the amplifier must amplify the peak of the signal, since the effects due to small moving targets are carried in the peak of the resultant signal . The performance of the AN/UPS-1 air search radar, operated as a noncoherent MTI system with the modified IF amplifier, was checked. This modification provides increased sensitivity for the noncoherent MTI radar over a radar employing a logarithmic IF amplifier. The advantage of noncoherent MTI is its simplicity. It is therefore attractive for those applications where space and weight are limited. It is also attractive for airborne applications since no compensation is required for radar motion.

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http://archive.org/details/movingtargetindi1094520954

Major, Israeli Air Force