On the accuracy of a numerical integration procedure for computing diffraction fields using tablelookup
Abstract
In this report we have analyzed the errors introduced by tablelookup when an electromagnetic diffraction integral is performed numerically. We have shown that, in order to keep the error of both the real and imaginary components to be less than epsilon, the required table should have at least K entries uniformily distributed within a 2 pi range K > or = 3.85/epsilon square root of N and N is the number of terms used for numerical integration. A numerical example is presented that confirms this prediction.
 Publication:

Naval Research Lab. Report
 Pub Date:
 September 1982
 Bibcode:
 1982nrl..reptX....H
 Keywords:

 Electromagnetic Radiation;
 Error Analysis;
 Wave Diffraction;
 Numerical Integration;
 Tables (Data);
 Communications and Radar