仿真潜艇航向对规避航空磁探仪搜索的影响

Simulation on the effect of submarine navigational orientation on evading the search of airborne magnetic anomaly detector

利用蒙特卡罗法仿真潜艇航向对规避航空磁探仪搜索的影响,为实际潜艇规避过程提供理论指导。首先分析航空磁探仪所测磁异常信号的表达式,然后将潜艇作为一个具有三轴磁矩的磁偶极子,并考虑其航向及地磁倾角等因素,根据理论分析得出以潜艇为中心的直角坐标系下的磁场表达式,在此基础上建立航空磁探仪搜潜的数学模型。最后利用蒙特卡罗法对潜艇不同航向时被航空磁探仪搜索到的概率进行仿真。仿真结果表明潜艇在规避磁探仪搜索时应尽量东西向航行。

The effect of submarine navigational orientation on evading the search of airborne MAD is simulated by using of Monte Carlo method in this paper and theoretical guidance is provided for the submarine evading course. The submarine is looked upon as a magnetic dipole possessing triaxial magnetic moment and its navigational orientation is considered at first. The expression of magnetic field based on submarine as the center of orthogonal reference frame is educed and mathematics model of airborne magnetic anomaly detector（ MAD） searching submarine is established. The probability of submarine searched by airborne MAD is simulated when submarine navigates with different orientation by using of Monte Carlo method. The simulation result shows that submarine should sail from west to east or contrarily when it evades the search of airborne MAD.