针对舰船目标尺寸巨大、形状复杂、电磁设备繁多的特点，选取并行多层快速多极子技术来模拟仿真其电磁环境。
Electromagnetic environment of ship, an extremely large complex target with various electromagnetic equipments, was simulated by parallel multi-level fast multipole algorithm (MLFMA).
首先建立了并行计算机系统的仿真环境，用以模拟任务在系统中的实际执行过程。
First of all, a simulation environment of the parallel computer system used in the simulator is set up to simulate the real execution process of the tasks in the system.
针对WITNESS仿真环境下，复杂离散事件仿真建模过程中出现的大量顺序、并行、同步、冲突及因果依赖等关系，提出采用改进型idef 3方法进行仿真建模。
An improved IDEF3 method was presented to describe a great lot sequence, paralleling, synchronization, conflict and consequence relation during discrete event simulation using WITNESS software.
应用推荐