Three-point bearing large-scale heavy-load high-precision two-dimensional machine phase-scan radar antenna pedestal

Abstract

The invention discloses a three-point bearing large-scale heavy-load high-precision two-dimensional machine phase-scan radar antenna pedestal, which relates to the technical field of large phased array radar antennas. The device specifically comprises a left pitching support, a right pitching support, a support arm, an azimuth turntable, roller groups, an azimuth track, a central pivot, a centralsupport and drive, an integrated track and rack, an azimuth angle measuring mechanism and a pitching angle measuring mechanism, wherein the left pitching support and the right pitching support are fixed on the azimuth turntable through the support arm; the integrated track and rack is installed on the array surface back frame, the roller groups are evenly distributed and rotationally installed onthe bottom surface of the azimuth turntable, the roller groups are installed on the azimuth track in a rolling mode, the center pivot is installed in the middle of the bottom surface of the azimuth turntable, the azimuth angle measuring mechanism and the antenna pedestal azimuth axis are coaxially installed, and the pitch angle measuring mechanism and the antenna pedestal pitch axis are coaxiallyinstalled. In the implementation process of the invention, the structure is simple, the design is ingenious, the work is reliable, and the method is effective and feasible.

Description

technical field [0001] The invention relates to the technical field of large-scale phased array radar antennas, in particular to a three-point bearing large-scale heavy-duty high-precision two-dimensional machine phase-scanning radar antenna base. Background technique [0002] Two-dimensional phase-scanning radar antenna base adopts dual-axis mechanical scanning to replace part of phase-scanning, which greatly reduces the cost and weight of pure phase-scanning radar system, increases the scanning range and tracking performance, and has become an indispensable part of phased-array radar. An important part of. With the continuous increase of phased array radar array scale and continuous improvement of precision, it is required that the array has good stiffness to achieve accuracy under different pitch angles, which poses new challenges to the array structure design. However, at present, the stiffness of the array structure varies greatly under different pitch angles. Under th...

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