国内外常规靶场主要使用微波干涉仪测量膛内弹丸纵向运动多普勒信号,根据膛内弹丸位移与其相位存在的线性关系,精确计算位移参数。针对一般Hilbert变换相位线性化存在的计算复杂度高、运算量大等不足,提出采用数字信号相位解卷绕算法对Hilbert变换得到的相位进行处理,使相位曲线连续化的方法。试验表明,该方法程序实现简洁、易调试、效率高,成功应用于某型号火炮实弹射击内弹道运动参数测量中。

Microwave interferometer is mainly used for measuring Doppler signal of the projectile in-bore longitudinal movement in conventional proving ground in home and abroad. The projectile displacement was accurately calculated by its linear relationship with phase information. Hilbert transform phase linearization method has large amount of calculation and complexity, the digital signal phase unwrapping algorithm was proposed to process the projectile Hilbert transform phase information to obtain the projectile continuous phase curve. The test result shows that the processing method is simple, easy to debug, efficient, and is successfully applied to measuring the projectile inbore motion parameter.