Study on RCS Characteristics of Low Scattering Carriers of Spherical Convergent Nozzle

摘要

In order to measure the radar cross section (RCS) characteristics of inner surface of Spherical Convergent Flap Nozzle (SCFN), low electromagnetic scattering carrier is designed, and its RCS is measured in the anechoic chamber. In addition, we use the inverse synthetic aperture radar (ISAR) imaging method to obtain the scattering center distribution of the carrier and the carrier with the SCFN. The results show that the RCS of the carrier is much smaller than the RCS of the SCFN in the range of ±50°, and the average of the difference between the two first increases and then decreases with the rise of the frequency, the maximum value is -19.8079 dB. Experiments have shown that this low electromagnetic scattering carrier can be used for RCS measure of cavity targets.