Plasma through the plane to medium vision with massive particles through path minkowski space plane path of the mathematical description of consistent, contain the space and time dimension.

等离子通过异向介质的平面路径与大规模粒子通过闵可夫斯基空间的平面路径的数学描述一致，其中都包含了空间和时间的维度。

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Fifth, we derive the mathematical equation of the instantaneous DOA, when the target moving in line and in the same plane as ULA.

第五，根据目标运动轨迹，通过数学推导得出目标在线阵平面内做直线运动时的瞬时波达方向表达式。

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A mathematical model of the output signal of focal plane array was established; a compensating algorithm utilizing reference source was derived and simulating programs were designed.

建立了红外焦平面阵列输出信号的数学模型，推导出使用参考辐射源的补偿算法并设计了仿真程序。

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