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可编程动态靶标的研究

Research on Programmable Dynamic Target

【作者】 张波

【导师】 沈湘衡;

【作者基本信息】 中国科学院研究生院(长春光学精密机械与物理研究所) , 光学工程, 2003, 硕士

【摘要】 常规光学旋转靶标是目前普遍使用的室内检测光电经纬仪的专用装置,该靶标存在着模拟目标运动轨迹固定、速度不可随时调节、方向不能任意改变等固有缺点。随着检测要求的不断提高,其局限性越来越明显,已经不能满足不同技术指标的光电经纬仪的检测需求。 本文阐述了可编程动态靶标在检测光电经纬仪中的重要作用和实际意义。根据靶标与光电经纬仪之间相对运动关系的数学模型建立了仿真模型,并应用仿真模型进行了大量的仿真试验,对比了靶标做匀速运动和做正弦摆动对被检测的光电经纬仪的跟踪曲线产生的影响,证实了靶标在编程控制下按正弦规律进行摆动可以更好的检测光电经纬仪的跟踪性能。完成了可编程动态靶标电子学系统的设计,包括控制计算机、时统电路、中断电路、编码器信息采集电路、PWM输出和功率放大电路、直流力矩电机等相关硬件电路和软件的具体设计。提出了跟踪法、线阵CCD和视频判读等三种标定动态靶标空间角度的方法。得出了初步结论:可编程动态靶标由于配置了位置输出元件和时间统一系统,实现了位置闭合,能对靶标的运动进行有规律的控制,克服了常规旋转靶标的固有缺点,可以提供模拟目标的空间标准角,因此可编程动态靶标不仅可以作为跟踪靶标使用,还可以作为测量靶标使用,是检测光电经纬仪跟踪性能和测角精度的新装置。

【Abstract】 A programmable dynamic target system is presented in this paper. On basis of analyzing the deficiency of traditional rotary target system, the significance and practicability of programmable dynamic target is proposed. Through obtaining the corresponding relationship between target and theodolite, simulation model that aims at founding the laws of the moving target produce influence on theodolite was set up. Electronics control system which including computer, uniform time circuit, interrupt circuit, PWM output circuit, power amplifier circuit and software etc was designed. Methods based on statistics for dimensional position and data processing were suggested for the calibration of the dimensional angle shown by a programmable dynamic target using linear matrix CCD and video interpretation. Studies in this paper show that the programmable target system is functional and capable of testing photoelectric theodolite. Consequently conclusions can be drawn that programmable dynamic target is new equipment to test photoelectric theodolite, not only can it check and test the performance, but also can measure the precision.

  • 【分类号】TH74
  • 【被引频次】15
  • 【下载频次】392
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