Since the difference in acquisition sensor and time for reference and real time image, the true matched points are sometimes not on the primary peaks but on the secondary peaks of correlation matrix, which resulted in the matching was to fail.

• 由于基准图和实时图在获取手段、时间上等方面的差异；在相关匹配中；配准点往往落在相关阵的次峰上；导致匹配失败.