摘要
计算机技术的发展使雷达系统仿真得到广泛应用。环境杂波的仿真在雷达仿真中占有极其重要地位。介绍了PD(脉冲多普勒)雷达地杂波的频谱分布特性,讨论了网格叠加法计算地杂波的原理,给出了杂波散射系数模型,分析了杂波幅度起伏特性和频谱特性,给出了单元杂波信号的叠加方法。最后,建立了视频地杂波仿真模型,并绘出了三维功率谱。
The development of computer technology prompts wide application of simulation of radar sys- tem. The simulation of environment clutter plays an important role in the simulation of radar. This paper intro- duces Doppler spectrum performance of PD radar ground clutter. The principle of grid superposition for compu- tation of clutter is discussed. A model of scattering factor of clutter is presented, and the amplitude fluctuation and spectrum characteristics of clutter are analyzed. The superposifion method of clutter cell signal is provided. Eventually, a simulation model of video ground clutter is set up, and the 3D power spectrum is plotted.
出处
《电子工程师》
2008年第8期6-8,共3页
Electronic Engineer
