Effect of nonlinear architectures on monopulse radar angle tracking accuracy

Many monopulse angle tracking radar systems are made up using nonlinear components, such as limiters and logarithmic amplifiers. This report describes several areas of work that all relate to monopulse angle tracking radars having at least one limiter in the signal processor. In one area the detailed angle tracking accuracy was determined for a sum-and-difference amplitude monopulse system having a sum channel limiter prior to the angle error detector. The analysis utilized a general accuracy expression valid for an arbitrary angle tracking system; the expression was developed as a second area of effort. A third area of work centered on evaluating coefficients that enter into the accuracy results derived in the first-described area. A fourth work area involved computation of the accuracy of a Rhodes Class III monopulse (with two limiters); this work was incomplete at the project end and remains for future work.