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综述了用摄影法测量弹丸自旋速率的原理,着重分析了测量弹丸转角三种不同的涂覆方法:常用的测量误差为2%的螺旋标记法;经改进、并实现1%测量误差的二进制编码法;以及国外在八十年代中期测量155弹丸转速时采用的达到1%测量误差的锯齿法。
The principle of measuring the spin rate of projectile by photogrammetry is reviewed. Three different coating methods for measuring projectile ’s turn angle are emphatically analyzed: spiral mark method with common measurement error of 2%; binary system with improved and realized 1% measurement error Encoding method; and saw the tooth method to reach 1% measurement error adopted by foreign countries in the mid-1980s to measure 155 projectile speed.