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首页> 外文会议>International symposium on advanced optical manufacturing and testing technologies >New Method for Improving Angle Measurement Precision of Laser Collimation System under Complex Background
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New Method for Improving Angle Measurement Precision of Laser Collimation System under Complex Background

机译：复杂背景下提高激光准直系统测角精度的新方法

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摘要

We have proposed a new method for improving angle measurement precision based on the principle of CCD laser collimation in this paper. First, through the control of the laser's state, on or off, by the Digital Signal Processor (DSP), the collimation light and the background light can be sampled, individually. Second, with the comparison between the sampled value of the background light intensity and the threshold value which has been set in the DSP previously, the DSP can automatically control Complex Programmable Logic Device (CPLD) to adjust the light integral time of CCD to adapt to different environment background and the changeable scanning driver of CCD is realized. Last, by the digital wave filtering the impact of the background light on the collimation light can be removed. With the comprehensive application of the controlling technology of automatically changeable scanning driving, collimation light on or off, A/D conversion and adaptive filtering, the integration time of the collimation system can automatically adjust to the proper value according to the change of the environment and the impact of the background light on the collimation system can be well removed. The simulation results show that the new method can achieve the self-adaptable control with the change of the environment and can improve the measurement precision of the laser collimation system under the complex environment.
机译：本文根据CCD激光准直原理提出了一种提高测角精度的新方法。首先，通过数字信号处理器（DSP）控制激光状态的开或关，可以分别对准直光和背景光进行采样。其次，通过将背景光强度的采样值与先前在DSP中设置的阈值进行比较，DSP可以自动控制复杂可编程逻辑器件（CPLD）来调整CCD的光积分时间以适应在不同的环境背景下实现了CCD的可变扫描驱动。最后，通过数字波滤波，可以消除背景光对准直光的影响。借助自动可变扫描驱动，准直灯开或关，A / D转换和自适应滤波等控制技术的全面应用，准直系统的积分时间可以根据环境和环境的变化自动调整为合适的值。可以很好地消除背景光对准直系统的影响。仿真结果表明，该方法可以在环境变化的情况下实现自适应控制，提高了复杂环境下激光准直系统的测量精度。

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