EXPERIMENTAL STUDY OF THE POLARIZATION OF MONO-SCATTERING PROPERTIES OF THE RADAR OBJECTIVE OF THE CONIC FORM COVERED WITH RADIO-ABSORBING MATERIAL
DOI:
https://doi.org/10.26906/SUNZ.2019.5.113Keywords:
radar target, polarization target scattering matrix, absorbing material, narrowband signalAbstract
The subject of the study is information on the characteristics of the radar scattering when applying an RPM to it to solve applied problems of recognizing radar targets. The goal is to obtain an experimental assessment of the polarizationscattering properties of a conical-shaped radar target on which a magnetic type absorbing material is applied. Tasks: reducing the visibility and increasing errors of determining the coordinates of the radar station when applying RPM to it, evaluating the reflection characteristics (scattering characteristics) of various types of RPMs, obtaining quantitative values of the scattering characteristics of targets coated with RPMs for narrow-band signals. The methods used are: mathematical optimization models, methods for solving matrix problems. The following results are obtained. The use of RPM leads to a significant decrease in the EPR of the target in the quasi-optical region of reflection of radio waves when using a narrowband signal. Conclusions. The scientific novelty of the results obtained is as follows: When a conical RPM is applied to the nose and base of the target, the petal structure is distorted by the realization of the amplitudes of the signals reflected from these sections at the main and cross polarizations with combined reception, as well as a slight decrease in the amplitudes of the reflected signals at the main polarizations. The use of RPM of the considered type also leads to a significant decrease in the EPR of the target in the quasi-optical region of reflection of radio waves when using a narrowband signal. Analysis of the statistical characteristics of the amplitudes of the signals reflected from the cone (average value and dispersion) showed the effect of the considered RPM similar to the effect on the implementation of these amplitudes. The application of RPM to separate parts of the cone also leads to a decrease in the length of the histograms of the amplitudes of the reflected signals at different polarizations.Downloads
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