摘要
本文将自适应波束形成技术与跳频通信相结合,提出了一种新的基于空间平滑算法与相位补偿算法的抗相关干扰跳频通信方案。该方案通过采用相位补偿算法,消除了跳频与自适应波束形成相结合时存在的波束指向偏差问题,提高了波束形成的收敛速度。将空间平滑算法应用到波束形成中,有效实现了对跳频通信系统中相关干扰的快速抑制。在强相关干扰环境下,当信干比(SIR)为-3 dB时系统对相关干扰的抑制能力达-71.89 dB。
A new scheme for frequency-hopping communication resistant to coherent interference was proposed based on spatial smoothing and phase compensation by combining frequency-hopping with adaptive beam-forming technology.The phase compensation technology was used to eliminate the beam positioning deviation when combining frequency-hopping with beam-forming,thus the convergence speed of beam-forming was increased.The spatial smoothing was used in beam-forming for suppressing the coherent interference in frequency-hopping communication.Theoretical analysis and simulation verified the effectiveness of the system.Under strong coherent interference with SIR as-3 dB,the suppression capability of the system to coherent interference can reach-71.89 dB.
出处
《电光与控制》
北大核心
2011年第4期18-20,76,共4页
Electronics Optics & Control
基金
国防预研基金(41101040603)
北京航空航天大学博士创新基金(911901310)
关键词
跳频通信
自适应波束形成
相位补偿算法
相关干扰
空间平滑算法
frequency-hopping communication
adaptive beam-forming
LMS algorithm
phase compensation
coherent interference
spatial smoothing
