摘要
现有的射频仿真系统在单通道中同一时间只能模拟一个辐射中心,因此难以对多目标与分布式杂波进行仿真。通过改进原有馈电电路并调整开关矩阵与阵列天线的连接顺序,现提出了一套新型的多辐射中心仿真系统的设计方案。新方案能够在单通道单周期中模拟两个辐射中心,为在经费有限、通道数量较少的条件下,模拟多目标和分布式杂波提供了技术基础。为了验证新方案的可行性,利用计算机仿真分析了新型方案引入的幅、相误差对辐射中心位置精度的影响,得出了几种情况下位置误差的统计分布。仿真结果表明,虽然新型方案中的位置误差相对更大些,但其辐射中心的位置精度仍然达到了仿真系统的技术要求,新型方案是可行的。
In present RFSS, system can only simulate one radiation center in one simulation cycle using single channel, which makes it hard to simulate multi - radar targets and distributed clutter. This paper presents a new de- sign for RFSS of multi - radiation centers, which bases on modifying feed circuits and the join order in traditional sys- tem. This new system that is able to simulate two radiation centers in one cycle using single channel will provide the technical support for the simulation of multi - radar targets and distributed clutter under limited funds and few chan- nels. The analysis of the influence of amplitude and phase error for radiation center positioning error is also presen- ted, including the error distribution histograms. The simulation results show that although the positioning error of this improved system is relatively a little higher, the precision of the radiation center positioning still meets the require- ments of simulation system so that the new design is feasible.
出处
《计算机仿真》
CSCD
北大核心
2010年第4期111-116,共6页
Computer Simulation
关键词
射频仿真系统
多辐射中心
位置精度
幅相误差
Radio frequency simulation system（RFSS）
Multi -radiation centers
Positioning error
Amplitude and phase error
