A Method of Improving the Measurement Accuracy of Off-target Delay in Photoelectric Tracking System

Abstract

The invention discloses a method for improving target missing quantity delay measurement accuracy in a photoelectric tracking system. By means of the method, the limit that an existing movement phaseshift method requires that a sinusoidal motion period of a tracking mechanism is larger than delay duration is solved, and target missing quantity delay measurement accuracy is improved at the same time. The method comprises the steps: firstly, putting a simulation target in a view field of the photoelectric tracking system and adjusting the position of the simulation target to make a camera of the photoelectric tracking system image clearly; then respectively controlling the photoelectric tracking system to drive an optical lens and the camera of the photoelectric tracking system to do largeamplitude low frequency sinusoidal motion and small amplitude high frequency sinusoidal motion. The motion phase shift method is utilized for measuring target missing quantity delays under the two parameter conditions, the target missing quantity delays are respectively recorded as Tc and Ts, a comprehensively obtained high accuracy delay is Tf+Ts*MOD(Tc,Ts), and the MOD(Tc,Ts) is a Tc / Ts module value. According to the method disclosed by the invention, system self configuration is utilized, addition of extra software and hardware is avoided, and delay measurement accuracy is obviously improved; the method has the advantages of simpleness, easiness, practicability and strong exploitativeness.

Description

technical field [0001] The invention belongs to the technical field of photoelectric tracking, and relates to a measurement method for the time delay of a miss amount in a photoelectric tracking system. Background technique [0002] With the continuous improvement of photoelectric tracking technology and the continuous expansion of its application fields, the tracking accuracy required to achieve the application purpose is getting higher and higher. This is especially evident in applications such as space optical communications, laser weapons, and range optical measurement. [0003] High tracking accuracy is inseparable from the accurate prediction of the target's motion law, and the prediction accuracy depends on the measurement accuracy of the target position at historical moments and the accuracy of the prediction time. The delay accuracy of off-target amount affects both of them, and is one of the main influencing factors. [0004] A typical photoelectric tracking syst...

AI Technical Summary

Problems solved by technology

[0009] The present invention proposes a method for improving the delay measurement accuracy of the miss amount in the photoelectric tracking system, which solves the limitation that the sinusoidal motion cycle of the tracking mechanism is greater than the delay time in the existing motion phase shift method, and improves the measurement of the miss amount delay at the same time precision

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