An Ultra-high Precision Angle Measuring System

Abstract

The invention discloses an ultra-high-precision angle measuring system, which comprises an anti-vibration platform, a high-precision turntable, a laser emitter, a corner reflector and a laser receiving plate. The high-precision turntable and the corner reflector are installed on the upper top surface of the anti-vibration platform symmetrically by a turntable mounting base and a corner reflector base. The laser emitter and the laser receiver are mounted above the high-precision turntable at the same height. The laser emitter, the laser receiver and the corner reflector are arranged cooperatively. According to the invention, a novel working mode with the optical system and the ultra-high-precision turntable is added based on the traditional precision detecting system; and the corner precision is detected by using the small spot change detected by the optical system. The system is characterized by the l innovative mechanical structure and optical principle; and the corner precision is measured. The speed is fast, the precision is high, and the system is realized simply. The requirements for integrated and high-precision development in the future are particularly met.

Description

technical field [0001] The invention relates to the field of angle measurement, in particular to an ultra-high-precision angle measurement system. Background technique [0002] With the advantages of high precision, low power consumption, and small size, star sensors have become the most competitive attitude-sensing devices for spacecraft. At present, the attitude determination accuracy of star sensors can reach 10″, and the accuracy of some types of star sensors can even reach 1″ level. High precision is the key factor for the rapid development and wide application of star sensors. With the increasing precision of star sensors, higher requirements are put forward for precision measurement methods. Traditional test methods are mainly based on star simulators and precision turntables. The position accuracy of turntables needs to be an order of magnitude higher than that of star sensors, that is, to reach the sub-arcsecond level. This kind of equipment is expensive and the op...

AI Technical Summary

Problems solved by technology

Traditional testing methods are mainly based on star simulators and precision turntables. The position accuracy of the turntable needs to be an order of magnitude higher than the measurement accuracy of the star sensor, that is, to reach the sub-arc second level. This kind of equipment is expensive and the operation process is complicated.

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