电讯技术
電訊技術
전신기술
TELECOMMUNICATIONS ENGINEERING
2014年
11期
1505-1509
,共5页
极化敏感阵列%自适应波束形成%幅度相位估计%互耦%波束图
極化敏感陣列%自適應波束形成%幅度相位估計%互耦%波束圖
겁화민감진렬%자괄응파속형성%폭도상위고계%호우%파속도
polarization sensitive array%adaptive beamforming%amplitude and phase estimation%mutual coupling%beam pattern
为了有效降低极化敏感阵列各共点分量之间互耦的相互影响，进一步提高极化阵列的滤波性能，基于新的阵列模型提出了幅度相位估计( APES)波束形成算法。首先，给出了简化极化阵列的布阵模型和接收信号模型；然后，针对简化极化阵列给出了极化APES波束形成算法的详细理论推导，得到了最优权向量的表达式；最后，通过仿真实验验证了极化APES在波束形成方面的有效性。仿真结果表明该算法在强期望信号功率、低采样快拍数或是存在相干干扰的情况下都具有稳定的波束图。
為瞭有效降低極化敏感陣列各共點分量之間互耦的相互影響，進一步提高極化陣列的濾波性能，基于新的陣列模型提齣瞭幅度相位估計( APES)波束形成算法。首先，給齣瞭簡化極化陣列的佈陣模型和接收信號模型；然後，針對簡化極化陣列給齣瞭極化APES波束形成算法的詳細理論推導，得到瞭最優權嚮量的錶達式；最後，通過倣真實驗驗證瞭極化APES在波束形成方麵的有效性。倣真結果錶明該算法在彊期望信號功率、低採樣快拍數或是存在相榦榦擾的情況下都具有穩定的波束圖。
위료유효강저겁화민감진렬각공점분량지간호우적상호영향，진일보제고겁화진렬적려파성능，기우신적진렬모형제출료폭도상위고계( APES)파속형성산법。수선，급출료간화겁화진렬적포진모형화접수신호모형；연후，침대간화겁화진렬급출료겁화APES파속형성산법적상세이론추도，득도료최우권향량적표체식；최후，통과방진실험험증료겁화APES재파속형성방면적유효성。방진결과표명해산법재강기망신호공솔、저채양쾌박수혹시존재상간간우적정황하도구유은정적파속도。
In order to reduce the mutual coupling effect between collocated elements of the polarization sen-sitive array( PSA) and further improve filter performance,a novel APES( Amplitude and Phase Estimation) beamforming algorithm using the simplified PSA is proposed in this paper. First,the array model and the re-ceived signal model of the simplified PSA are presented. Second,the principle of the proposed algorithm is derived and the expression of the optimal weight vector is achieved. Finally, the simulation results are shown to verify the effectiveness of the proposed algorithm. Simulation results indicate that the proposed al-gorithm can obtain a stable beam pattern under the circumstances of high desired signal power,low sam-pling snapshots and coherent interferences.
