Radar method of aircraft angular position estimation based on the use of sounding signals vector properties

The radar monopulse method of determining the bearing and roll angles of an aircraft using a passive radio beacon with specified polarization scattering characteristics is considered, in which the reflected radio pulse contains complete information about the navigation elements of the aircraft flight. The passive beacon is two spatially separated in the horizontal plane radar polarization-anisotropic trihedral corner reflectors with horizontal and vertical natural polarizations, respectively. To determine the bearing and roll angles of an aircraft, probing pulse signals are used, the linear plane of polarization of which makes an angle π/4 with the horizontal plane. The bearing of the aircraft is estimated in this plane by a single reflected radio pulse at the output of a two-channel receiving device according to the measured phase difference between the horizontal and vertical polarized components of the received signal. The roll angle is estimated from the measured ratio of the amplitudes of the orthogonally linearly polarized components. Analytical expressions for determining the bearing and roll angles of the aircraft are obtained.