提高光电经纬仪跟踪快速运动目标能力的一种方法

A Method for Improving the Tracking Ability of a Photoelectric Theodolite against the Fast Moving Targets

考虑到系统稳定性,光电经纬仪跟踪伺服系统一般设计成I型系统。I型系统存在速度、加速度动态滞后误差。动态滞后误差的大小不但与跟踪系统有关,还与目标运动特性有关。在跟踪快速运动目标时,会因速度、加速度动态误差的增大,导致目标脱离视场,丢失目标。因此提高光电经纬仪跟踪快速运动目标的能力,一直是光电跟踪伺服系统努力的方向。本文给出了一种提高光电经纬仪跟踪快速运动目标的能力的方法:动态1+I控制法,并利用SIMULINK建立了跟踪伺服系统动态1+I控制法仿真模型。仿真结果表明动态1+I控制法是一种提高光电经纬仪跟踪快速运动目标能力的有效方法。

Taking account of the system stability, the tracking servo system is generally designed into Model I system. There are velocity and acceleration dynamic lag errors in the Model I system. The amount of the dynamic lag errors not only is concerned with the tracking system, but also concerned with the moving characteristics of target. When a fast moving target is tracked by a theodolite, the target leaving field of view and target losing will be taken place by the increasing of velocity and acceleration dynamic errors of the Model I system. So improving the tracking ability of a theodolite for the fast moving target is the orientation of the photoelectrical tracking and servo system all along. A method for improving the tracking ability of a photoelectrical theodolite for the fast moving target is given in the paper: Dynamic 1+I control method and a simulation model for the tracking and servo system dynamic 1+I control method has been set up by use of SIMULINK software. The simulation results show that the dynamic 1+I control method is an effective method for improving the tracking ability of the photoelectrical theodolite for the fast moving target.