标准失真模拟分量视频信号源及其校准方法

发布时间：2018-06-29 11:42

本文选题：仪器仪表技术 + 失真模拟分量视频测试信号　；参考：《吉林大学学报(工学版)》2017年04期

【摘要】：标准模拟分量视频测试信号参数单一,应用其对视频信号分析仪器校准时得到的结果不具有多样性。为解决这一问题,分析了模拟分量视频信号的测量原理,基于SDP2000信号编辑软件和TG700视频信号发生器,开发带有失真参数的模拟分量视频测试信号,并建立失真模拟分量视频信号源标准装置,对该装置的幅度电平和上升时间进行校准,评定了校准过程的测量不确定度。结果表明:幅度电平扩展测量不确定度为0.60%;上升时间扩展测量不确定度为0.19%(包含因子k=2)。该信号源可以发出带有失真量的标清和高清模拟分量视频测试信号,能够用于视频信号分析仪器的校准,得到多样化的结果,从而更加全面地评价仪器的测量准确性。
[Abstract]:The standard analog component video test signal has a single parameter, and the results obtained when calibrating the video signal analysis instrument are not diverse. In order to solve this problem, the measuring principle of analog component video signal is analyzed. Based on SDP2000 signal editing software and TG700 video signal generator, the analog component video test signal with distortion parameter is developed. A standard device for analogue component video signal source is established to calibrate the amplitude level and rise time of the device and to evaluate the uncertainty of the calibration process. The results show that the uncertainty of amplitude level expansion measurement is 0.60 and that of rising time spread measurement is 0.19% (including factor KG 2). This signal source can send out standard and high definition analog component video test signals with distortion, which can be used to calibrate video signal analysis instruments and obtain various results, so as to evaluate the measuring accuracy of the instruments more comprehensively.
【作者单位】：吉林大学仪器科学与电气工程学院;中国计量科学研究院信息与电子计量科学和测量技术研究所;
【基金】：国家科技支撑计划项目(2014BAK02B03)
【分类号】：TN948.12

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