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弹丸落点偏差可作为弹道末段修正的参照量,为制定修正策略提供依据。利用图像匹配技术和MEMS技术,根据目标在图像导引头CCD上的成像坐标,测量弹目相对方位,进而建立了估测弹丸落点与目标偏差的数学模型,并进行了四自由度弹道仿真验证。仿真计算结果表明,该方法能够较准确的测量弹丸落点与目标偏差,CCD与MEMS的测量误差是测量弹丸落点偏差精度的决定因素。
Projectile landing error can be used as the ballistic correction of the reference amount, to provide a basis for the development of correction strategy. Using the image matching technology and MEMS technology, the relative orientation of the projectile is measured according to the imaging coordinates of the target on the image seeker CCD, and then a mathematical model to estimate the projectile falling point and target deviation is established. The four degrees of freedom trajectory simulation verification. The simulation results show that this method can measure the projectile falling point and target deviation accurately, and the measurement error of CCD and MEMS is the decisive factor to measure the precision of projectile falling point deviation.