MARINE RADAR BUOY Russian patent published in 2008 - IPC H01Q15/14 B63B22/16 

FIELD: physics, radio navigation.

SUBSTANCE: invention relates to radiolocation and radio navigation and may be used as a radar navigation marine buoy operating in decimetre and metre wavelength ranges. The radar marine buoy is a hollow metallic cone (HMC) with a right taper angle, the vertex of which faces the sea surface, which is the second reflective element, and a floating support, which is the HMC part at its vertex side. When the HMC is installed on the sea surface, with its vertex to the surface, an equivalent biconical radar reflector is formed, providing scattering indicatrix uniformity in the azimuthal plane. The HMC is open at the round base side and the whole its internal cavity is filled with a radio transparent material with a specific density 15...40 times lower than that of the sea water. The technical effect is the expansion of the marine buoy scattering indicatrix to 90° in the elevation plane and increase in its scattering cross-section (with a probability level of 0.5) to 4.3...14.2dB, in the wavelength range from decimetres to metres. The radio-transparent material prevents from the sea water ingress to the internal HMC cavity, also providing buoyancy and stability of the whole structure.

EFFECT: expansion of marine buoy scattering indicatrix and increase in its scattering cross-section.

2 cl, 6 dwg