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在火炮（包括地炮，高炮）的零位、零线检查中，一直停留在吊垂线、人眼瞄准等费时费力的传统方法中，速度慢，误差大，夜间和野外条件下无法实施，而且由于垂线较高，危险性较大。利用“激光延展技术”代替铅垂线，用激光束瞄准代替人眼瞄准。并在零位检查中利用ＣＣＤ探测技术，使“激光垂线”和炮口十字线通过ＣＣＤ摄像头形成的像在显示器上显示出来。该方法可使火炮校正速度提高５倍左右，精度提高一倍。
In the zero and neutral line inspection of artillery (including artillery, anti-aircraft artillery), it has been slow and error-prone in the conventional methods such as hanging lines and aiming of human eyes, which can not be implemented under night and field conditions , But because of the higher vertical line, the danger is bigger. Use “laser extension technology” instead of the plumb line, aiming at a laser beam instead of the human eye. And in the zero check using CCD detection technology, so that “laser vertical line” and muzzle cross line formed by the CCD camera image displayed on the display. This method can make artillery correction speed increased by about 5 times, accuracy doubled.