Three-axis stabilized platform angle detector for radar antenna and detection method thereof

Abstract

The invention relates to an SAR (Stop and Reveres) antenna stabilized platform and particularly relates to a three-axis stabilized platform angle detector for a radar antenna. The three-axis stabilized platform angle detector comprises a stabilized platform connection plate, an X-axis rotary mechanism, an X-axis moving mechanism, a Y-axis rotary mechanism, a Y-axis moving mechanism, a Z-axis rotary mechanism, a Z-axis moving mechanism and an engine base, wherein the Z-axis rotary mechanism is mounted on the engine base; the Y-axis moving mechanism is connected with the Z-axis moving mechanism; the X-axis moving mechanism is connected with the Y-axis moving mechanism; the Y-axis rotary mechanism is connected with the X-axis moving mechanism; the Z-axis moving mechanism is connected with the Y-axis rotary mechanism; the X-axis rotary mechanism is connected with the Z-axis moving mechanism; the stabilized platform connection plate is connected with the X-axis rotary mechanism and is used for being connected with the tail end of a stabilized platform to be detected. The three-axis stabilized platform angle detector for the radar antenna has the beneficial effects that the rotary angles of three axes of the three-axis stabilized platform can be detected simultaneously in a working process, the detection efficiency is high and the detector is convenient.

Description

technical field [0001] The invention relates to a SAR antenna stable platform, in particular to a radar antenna three-axis stable platform angle detector and a detection method. Background technique [0002] The SAR antenna stabilization platform uses platform control to isolate the disturbance of the carrier aircraft caused by atmospheric turbulence, that is, the deflection or turbulence of the carrier aircraft in the heading, pitch and roll directions; Angular velocity in the three directions of heading, pitching and rolling, the control computer commands the corresponding three servo motors to drive the stable platform to run at the same speed in the opposite direction to offset the deflection of the carrier aircraft in the heading, pitching and rolling directions, so as to realize radar The attitude of the antenna relative to the geography is stable, which ensures that the airborne SAR radar system can reliably image a large area. [0003] The operating angle accuracy o...

AI Technical Summary

Problems solved by technology

[0003] The operating angle accuracy of the stabilized platform has an important impact on the stability of the SAR antenna compensation, so the operating angle of the stabilized platform must be checked and corrected; currently in China, there are two methods for detecting the angle accuracy of the stabilized platform, one is the laser detection method, The other is the theodolite detection method. These two methods have a common disadvantage that only single-axis detection can be performed at the same time, and three-axis directions cannot be detected at the same time; Coordinate position changes. In these two detection methods, the amount of change in coordinate position will be coupled to angle detection, resulting in angle detection errors

Images