摘要
天地波混合组网雷达系统将天地波一体化雷达和地波超视距雷达组网技术的特点和优势结合起来。多输入多输出雷达体制综合采用多通道、等效发射波束形成技术,为天波超视距雷达面临的多径、多模效应和杂波多普勒扩展等问题提供了一条有效解决途径。将MIMO(Multiple Input Multiple Output)技术与天地波雷达系统相结合,研究了天地波MIMO雷达的信号模型,以L阵配置下的天地波MIMO雷达为例,利用MUSIC(Multiple Signal Classification)算法实现多目标角度估计,实现了对天地波MIMO雷达的多目标角度估计的仿真试验,天地波MIMO雷达的仿真结果验证了该模型的有效性。
The sky-surface wave hybrid networking system has the advantage of the HF hybrid skysurface wave radar and the ground wave radar.Based on the multiple channel and non-causal transmit beamforming techniques,the multiple-input multiple-output radar architecture can provide a feasible approach for solving the multipath effect,multimode effect and Doppler-spread clutter in OTH Radar.In this paper,the MIMO sky-surface wave radar is studied,which is a new type of radar system combining MIMO technology with the sky-surface wave hybrid networking system.The signal model of the MIMO sky-surface wave radar is given.Taking the MIMO sky-surface wave radar based on L-array as an example,the angle estimation of multi-targets is carried out using MUSIC.Simulation of angle estimation for multi-targets based on MIMO sky-surface wave radar is realized.The simulation results of the MIMO sky-surface wave radar show that the proposed model is effective.
出处
《雷达科学与技术》
北大核心
2017年第5期490-494,499,共6页
Radar Science and Technology
基金
国家自然科学基金(No.41474128
61401316)
"十二五"国家863课题(No.2012AA091701
2012AA091702)
