线列CCD像机交汇测量精度分析

Precision Analyzing of a Linear CCD Array Camera in Intersectant Measurement

目的 探讨提高线列 CCD像机交汇测量精度 ,在此基础上分析了 CCD像机交汇测量的原理 .方法 采用空间虚拟的光电靶代替实物靶来实现对弹丸目标脱靶量的实时获取 .结果与结论 在分析了 CCD像机测角精度与布站方式等影响交汇测量精度的因素后 ,对光电靶面上不同位置点的 CCD像机交汇坐标测量结果进行了计算 ,最终给出了测量精度与布站的关系 .CCD像机视轴正交时系统具有最高的测量精度 .

Aim This paper is discussing how to get high precision of a linear CCD array camera in intersectant measurement. Then theory of intersectant measurement for the linear CCD array camera is studied. Methods The precision of missiles and cannonballs are obtained in real time by using a dummy target to replace a practical target. Results and Conclusion After analyzing the precision factor of intersectant measurement, the coordinate measuring precision of various position in a photoelectric target are calculated. At last the relation between measuring precision and the position of the linear CCD array camera has been obtained. The conclusion is that measuring system has highest measuring precision if the angle of two linear CCD array camera ′s sight axes is 90°.