摘要
目标模拟器是鱼雷自导系统设计的重要仪器。该文的目的是给出宽频水下目标回波信号模拟的软件仿真流程,为实际应用中目标模拟器的硬件实现提供一个较完整的软件基础。文章以宽带信号处理的理论为基础,对自导系统中常用到的各种信号和目标回波的模拟(包括目标距离、方位和速度的模拟)方法做了细致的讨论,给出了多普勒频移、时延、环境噪声和海洋混响的模拟方法和M atlab仿真结果。其中,在模拟海洋混响时采用了性能较好的椭圆滤波器。文章最后还给出了对多目标和动目标的M atlab仿真结果。结果表明实际中用硬件来模拟宽带水下鱼雷自导目标回波信号是可行的。
Object simulator is the primary device for designing torpedo homing system. This paper introduces the software imitation flow of target echo signal simulation for underwater wideband homing torpedo. It brings forward a comprehensive software support for target simulation＇s hardware design. It provides detailed theoretical analysis for wideband model, signal type, target echo simulation, reverberation simulation and environment noise simulation under marine environment, and puts forward Matlab simulation results. Especially, the elliptic digital filter is used for simulating reverberation. Matlab simulation results of multi - target and moving target are given out. It proves that simulating target echo signal of underwater wideband homing torpedo by hardware is feasible.
出处
《计算机仿真》
CSCD
2006年第8期17-22,共6页
Computer Simulation
关键词
宽频
目标回波
椭圆滤波器
多目标
动目标
Wide band
Target echo
Elliptic digital filter
Multi - target
Moving target
