CCD像面旋转引起的脱靶量误差及检测方法

Miss distance error due to rotation of CCD sensor imaging surface and its testing method

分析了光电测量设备电视系统的CCD传感器像面旋转这个普遍存在的问题所带来的脱靶量测量误差,建立了一些相关的数学模型,并且讨论了在不同像面旋转角情况下的误差变化规律。简要地介绍了这种测量误差的检测方法以及修正方法。实际检验表明,上述方法不仅能很好地修正CCD传感器像面旋转所引起的脱靶量测量误差,显著提高电视系统脱靶量测量精度,而且对于红外电视测量系统也是同样适用的。

The miss distance measurement error due to the rotation of the CCD sensor imaging surface in a video measurement system is analyzed with some relative mathematical models established, and the variation of this kind of error is discussed for different rotation angles of the imaging surface. How this measurement error can be checked and corrected are briefly discussed. Actual inspection shows the ways mentioned above can correct the miss distance measurement error resulting the rotation of the CCD sensor imaging surface and improve the accuracy of miss distance measurement, and it is suitable for an IR video measurement system.