Discrete implementation of an image-based algorithm for extrapolation of radar cross-section (RCS) from near-field measurements

摘要

ERIM is currently investigating several near-field to far-field transformations (NFFFTs) for predicting the far-field RCS of targets from monostatic near-field measurements. Each of the techniques uses approximations and/or supporting information to overcome the need for the bistatic near-field data which is required to rigorously transform a target's scattered field from the near zone to the far zone. Our focus has been on spherical near-field scanning, since this type of collection geometry is most compatible with existing RCS ranges.