METHOD OF DETECTING AND SELECTING RADAR SIGNALS BASED ON POLARISATION FEATURE AND APPARATUS FOR REALISING SAID METHOD

摘要

FIELD: radio engineering, communication.;SUBSTANCE: invention involves receiving two orthogonal signal components, converting analogue signals to digital form, storing the digital signals in storage devices; interpolating the digital signals, storing the interpolated digital signals, subsequently determining the amplitude ratio and phase difference of the orthogonal components of the selected signal, calculating the overall polarisation parameter of the received signal - ellipticity angle and determining presence or absence of the selected signal in accordance with a Neumann-Pearson criterion. The apparatus for detecting and selecting radar signals based on a polarisation feature, having a dual-polarised antenna, a two-channel receiver having two inputs connected to outputs of the dual-polarised antenna, and two outputs, wherein the first channel consists of cascade-contained first low-pass filter, first analogue-to-digital converter, first storage device, first signal interpolation device and second storage device, and the second channel consists of cascade-connected second low-pass filter, second analogue-to-digital converter, third storage device, second signal interpolation device and fourth storage device, and a signal processing device having two inputs, the first of which is connected to the output of the second storage device and the second is connected to the output of the fourth storage device, and two outputs, also includes a unit for determining presence or absence of the selected signal based on a polarisation feature, two outputs of which are connected to outputs of the signal processing device, and an indicator whose input is connected to the output of the unit for determining presence or absence of the selected signal based on a polarisation feature.;EFFECT: broader functional capabilities.;2 cl, 6 dwg