Real-time distance measurement system based on Doppler ranging radar
Article Text (Baidu Translation)
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摘要: 研究了机场助航灯光强动态检测技术的工作原理, 分析了光强动态检测中距离测量的特点, 基于多普勒测距雷达原理, 构建了非接触式实时距离测量系统。结合硬件板卡, 采用面向对象方法设计了测量软件, 使用多线程技术, 使距离测量和灯光照度测量在不同的线程中工作, 并对整个光强动态测量过程进行自动控制。试验结果表明: 应用该系统实现了距离测量和灯光照度测量的同步进行, 距离测量误差低于5 mm; 通过距离测量能够对光强动态测量过程进行精确控制, 照度测量点间距控制精度达到0.000 5%。可见, 该系统实时性好, 测量精度高, 能够满足实时进行精确距离测量的要求。Abstract: The working principle of dynamic detection technology for the luminous intensity of airport aid lights was researched, and the character of distance measurement in the dynamic detection of luminous intensity was analyzed. Based on the principle of Doppler ranging radar, a non-touch real-time distance measurement system was built. Combining with hardware card, measurement software was designed by using object oriented method. According to the multithread technology, the distance measurement and the light illumination measurement were made in different threads. The whole process of dynamic measurement of luminous intensity was autocontrolled. Test result shows that the synchronization of distance measurement and light illumination measurement is realized by using the system, the error of distance measurement is 5 mm, the process of dynamic measurement of luminous intensity can be controlled by using the distance measurement precisely, and the control precision of distance between illumination measurement points is up to 0.000 5%. So the system has good real-time performance, high measurement precision, and satisfies the request of real-time precise distance measurement.
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表 1 距离测量数据
Table 1. Data of distance measurement
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