Investigation of Tolerance Analysis of Reflector Analysis

摘要

A computer algorithm is described which permits the establishment of tolerances on selected reflector antenna geometrical parameters, by using as inputs the allowable change permitted in the antenna electrical performance parameters. This approach is the reverse of the conventional design procedure, and can only be accomplished by apportioning a fraction of the total change in a given parameter to a specific error source. In order to define the required relationships between error source and resultant error, it is necessary to use a computer algorithm which permits the user to calculate the effects of distortion of reflector geometry on selected antenna performance parameters. The relevant error sources are defined, and mathematical models of these sources are presented. A representative algorithm is described and a demonstration of the algorithm is presented showing typical results of calculations performed with existing software.