匹配制导定位是以网格为基准的,减小由此而产生的固有定位误差是研究匹配制导技术所普遍关心的问题。文章从分析匹配定位的相关特性着手,根据匹配相关值函数的连续性,提出一种利用曲面拟合的近似估计方法、经计算机模拟证实,此方法能够较大幅度地减小匹配制导定位误差,是一种提高匹配定位精度的经济、有效的方法。 The matching guidance is grid-based. To reduce the inherent localization error is a common concern in the study of matching guidance technology. Based on the analysis of the related characteristics of matching location, this paper presents an approximate estimation method using surface fitting according to the continuity of the matching correlation value function. The computer simulation shows that this method can reduce the matching guidance positioning error greatly, It is an economical and effective method to improve the matching accuracy.