系统工程与电子技术
繫統工程與電子技術
계통공정여전자기술
SYSTEMS ENGINEERING AND ELECTRONICS
2015年
7期
1483-1488
,共6页
综合孔径成像%稀疏阵列%六边形格点%差基
綜閤孔徑成像%稀疏陣列%六邊形格點%差基
종합공경성상%희소진렬%륙변형격점%차기
synthesis apeture imaging%sparse array%hexagonal grids%difference basis
研究了六边形格点干涉阵列的阵列稀疏和优化。通过阵列配置矩阵及其自相关矩阵和互相关矩阵，分析了六边形格点阵列的 UV 平面采样点分布规律，推导得到了六边形格点阵列实现 UV 平面采样点全覆盖的条件，并将六边形格点阵列的稀疏优化转化为矩形格点阵列的稀疏优化问题。利用差基序列低冗余度特性，提出了基于差基的六边形格点阵列稀疏与优化方法。仿真分析结果表明，采用所提方法得到的稀疏阵列，其冗余度优于经典 X 形阵。
研究瞭六邊形格點榦涉陣列的陣列稀疏和優化。通過陣列配置矩陣及其自相關矩陣和互相關矩陣，分析瞭六邊形格點陣列的 UV 平麵採樣點分佈規律，推導得到瞭六邊形格點陣列實現 UV 平麵採樣點全覆蓋的條件，併將六邊形格點陣列的稀疏優化轉化為矩形格點陣列的稀疏優化問題。利用差基序列低冗餘度特性，提齣瞭基于差基的六邊形格點陣列稀疏與優化方法。倣真分析結果錶明，採用所提方法得到的稀疏陣列，其冗餘度優于經典 X 形陣。
연구료륙변형격점간섭진렬적진렬희소화우화。통과진렬배치구진급기자상관구진화호상관구진，분석료륙변형격점진렬적 UV 평면채양점분포규률，추도득도료륙변형격점진렬실현 UV 평면채양점전복개적조건，병장륙변형격점진렬적희소우화전화위구형격점진렬적희소우화문제。이용차기서렬저용여도특성，제출료기우차기적륙변형격점진렬희소여우화방법。방진분석결과표명，채용소제방법득도적희소진렬，기용여도우우경전 X 형진。
Design and optimization of sparse millimeter wave (MMW)synthesis apeture imaging arrays on hexagonal grids are researched.The arrangement of sparse arrays can be represented by the configuration ma-trix.Using the auto-correlation matrix and the cross-correlation matrix of the configuration matix,distribution of sampling points in the UV plane of hexagonal array is analyzed,and conditions for sampling points covering the whole UV plane are deduced.Then,the question is converted to design and optimization of a sparse rectan-gular array.With the virtue of low redundancy,difference basis series are used to design hexagonal arrays,and a method to construct an optimized sparse hexagonal array is presented.Theoretical analysis and simulation show that redundancy of the optimized hexagonal array is lower than that of a typical X style array.
