CAJ | 학술논문

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.
현유적사빈방진계통재단통도중동일시간지능모의일개복사중심,인차난이대다목표여분포식잡파진행방진.통과개진원유궤전전로병조정개관구진여진렬천선적련접순서,현제출료일투신형적다복사중심방진계통적설계방안.신방안능구재단통도단주기중모의량개복사중심,위재경비유한、통도수량교소적조건하,모의다목표화분포식잡파제공료기술기출.위료험증신방안적가행성,이용계산궤방진분석료신형방안인입적폭、상오차대복사중심위치정도적영향,득출료궤충정황하위치오차적통계분포.방진결과표명,수연신형방안중적위치오차상대경대사,단기복사중심적위치정도잉연체도료방진계통적기술요구,신형방안시가행적.
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 design for RFSS of multi-radiation centers,which bases on modifying feed circuits and the join order in traditional system.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 channels.The analysis of the influence of amplitude and phase error for radiation center positioning error is also presented,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 requirements of simulation system 80 that the new design is feasible.