Implementation of an active noise suppression system in C-band indoor RCS measurements

The present article shows the results of ongoing works at AMR/IAE/CTA in the configuration of an experimental setting necessary to determine the error sources in radar cross section (RCS) measurements and hence minimize them by means of a system developed to measure targets in C- Band (6.0 GHz), in a closed environment, using an anechoic chamber. Microwave circuit techniques were employed aiming at an active noise suppressing system, by use of the principle of phase canceling. By means of this work it was possible to perform comparison of the RCS measurements, with and without the developed system, and observe its influence in such measurements. Given the accuracy obtained, it can be asserted that implementation of this system in future measurements will be very useful and necessary for the determination of RCS of complex objects, such as missiles, aircrafts and helicopters.