Low scattering turntable for improving quiet zone test performance and quiet zone test method

A low scattering turntable for improving quiet zone test performance, comprising an L-shaped baffle, a rhombic inclined wedge supporting column, a bottom plate, a turntable base, a fixed block, a longitudinal rotating shaft and a transverse rotating shaft;

• wherein,
• a bottom plate outer edge of the L-shaped baffle is provided with sawtooth wave-absorbing material;
• a height hz(x) of each sawtooth in the sawtooth wave-absorbing material at different horizontal positions is expressed as:
• h
• z
• (
• x
• )
• =
• A
• z
• ⁢
• ❘
• "\[LeftBracketingBar]"
• 2
• π
• ⁢
• arctan
• ⁡
• (
• tan
• ⁡
• (
• π
• ⁢
• x
• λ
• )
• )
• ❘
• "\[RightBracketingBar]"
• ;
• wherein AZ represents an amplitude of the sawtooth;
• x represents a horizontal position of the sawtooth;
• λ represents a wavelength corresponding to a center frequency of a designed frequency band;
• a bottom end of the rhombic inclined wedge supporting column is fixedly placed on the bottom plate, and a top end is fixedly connected with the fixed block;
• multi-layer wave-absorbing materials are arranged on a left side and a right side of the rhombic inclined wedge supporting column;
• a side surface of the fixed block is movably connected with the transverse rotating shaft, the transverse rotating shaft is movably connected with a side surface of the L-shaped baffle and the transverse rotating shaft drives the L-shaped baffle to rotate longitudinally by 360°;
• the longitudinal rotating shaft is movably connected below the bottom plate, the longitudinal rotating shaft is movably connected with the turntable base, the longitudinal rotating shaft drives the bottom plate and above components to rotate transversely by 360°.