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本文对连发弹道摄影记录的理论和方法进行了初步的探讨,并提出对摄影底板的判读方法。在SHJ—741型弹道相机的基础上,采用沿Y轴方向均匀连续地移动底板的方法同步拍摄目标的像点、并应用光导管同时对光标点曝光和输出光电信号到光线记录示波器(或记时仪),使像点,光标点和记时信号三者同步。在旋转快门上装抹点机构,根据预先编好的程序在拍摄过程中同时抹掉一组像点和一组光标点(或做特殊标记)及对应的记时信号。底板的判读方法;根据所抹掉的像点和光标点的对应关系则较容易的找出每一坐标系中所对应的一组像点进行判读;或以第一次光标点为准进行判读,再根据底板的移动速度和相应的曝光时间进行坐标换算。上述方案特点:一开始就造成明显的弹道差别,可以较容易的区分弹道和弹序,可以提高编制射表的速度和精度。
This article has carried on the preliminary discussion to the theory and method of the contingent of ballistic photogrammetry, and puts forward the method of interpreting photographic backplane. On the basis of the SHJ-741 ballistic camera, the image of the target is synchronously moved by moving the soleplate continuously and evenly in the Y-axis direction, and the light guide is used to simultaneously expose the cursor point and output optical signals to the light recording oscilloscope When the instrument), so that the image point, the cursor point and timing signal synchronization. Put a point on the rotating shutter mechanism, according to pre-programmed procedures in the process of shooting at the same time erasing a group of dots and a group of cursor points (or do special mark) and the corresponding chronograph signal. According to the corresponding relationship between the erasing point and the cursor point, it is easier to find a corresponding point in each coordinate system for interpretation; or the first cursor point shall prevail for interpretation, Then according to the bottom of the moving speed and the corresponding exposure time coordinate conversion. The above program features: the beginning of the obvious trajectory caused by differences between the trajectory and the spring can be easier to distinguish, you can improve the preparation of the speed and accuracy of the radio.