为进一步提高舰船导航的定位精度,本文提出了利用数据建模的方法,从统计角度来揭示其系统内部的统计关系,並证明了用观测数据建立的ARMA模型中传递函数分母Φ(B)一定包含有实际系统模型的传递函数中的分母Φ’(B),所以Φ(B)仍然能显示出实际系统的有关特性。这样就可以将舰位推算系统,即一个多输入系统简化为一个单输入α_t作用下的问题。 In order to further improve the positioning accuracy of navigational navigation, this paper proposes a method of data modeling to reveal the statistical relationship within the system from a statistical point of view and proves that the denominator Φ (B) of the transfer function in the ARMA model established with the observed data, Must contain the denominator Φ ’(B) in the transfer function of the actual system model, so Φ (B) still shows the actual characteristics of the system. In this way, the ship propulsion system, a multi-input system, can be reduced to a single-input α_t problem.