Laser electronic target based on non-diffraction light

Abstract

The invention discloses a laser electronic target based on non-diffraction light. Laser transmitted by a cube corner pyramid lens enters a light splitting circuit and is divided into a horizontal beam and a vertical beam; the horizontal beam is reflected by a plane mirror and a beam splitter and then enters a conical lens to form a non-diffraction light spot O2; an image information processing system captures the non-diffraction light spot O2, and a horizontal yaw angle and an inclination angle of an object to be measured can be obtained by calculation of the center coordinate of the non-diffraction light spot; the vertical beam is reflected by the plane mirror on a gravity pendulum with damp, is projected into the beam splitter and enters the conical lens to form a non-diffraction light pot O1; and the image information processing system captures the non-diffraction light and acquires the roll angle of the object to be measured according to the calculation of the center coordinate of the non-diffraction light pot O1. The laser electronic target realizes all-optical space angle measurement based on the non-diffraction light, and has the characteristics of high space angle measurement accuracy, stability, and ambient light interference resistance capacity and compact structure.

Description

Technical field [0001] The invention belongs to the technical field of space angle measurement, and specifically relates to a laser electronic target based on non-diffracted light, which is used for positioning and guiding large equipment systems such as shield machines. Background technique [0002] At present, gyro-oriented and laser-oriented technologies are mainly used for attitude measurement and guidance during operation of large-scale equipment systems. The gyroscope uses the mechanism that the angular momentum and direction of the high-speed rotating rotor remain unchanged in the inertial space to achieve the measurement of the spatial angle, but it has the disadvantages of large time lag and azimuth drift. The German ZED and VMT laser guidance systems based on laser orientation technology, with different measurement principles, can well measure the space angle and realize the attitude measurement and guidance of the equipment, but the optical path system is more complica...

AI Technical Summary

Problems solved by technology

This system has the following disadvantages: First, the limitation of the angle measurement accuracy of the inclinometer leads to the limitation of the measurement accuracy of the space angle in the whole system; second, the drift of the inclinometer due to the influence of environmental temperature and other factors is relatively serious; Different measurement approaches or methods are used for each angle on the surface. In theory, it is difficult to measure all spatial angles at the same time. When the attitude of the equipment changes rapidly, the measurement accuracy will be seriously affected; the fourth is due to the phase difference, spherical aberration, and ambient light interference in the optical path system. Factors such as affecting the coordinates of the center of the laser spot

These will lead to the reduction of the accuracy and working stability of the target system, affecting the accurate measurement of space angles

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