电波科学学报
電波科學學報
전파과학학보
CHINESE JOURNAL OF RADIO SCIENCE
2009年
6期
987-991,1008,1177
,共7页
阵列流形%对数螺旋阵%MUSIC算法%DOA
陣列流形%對數螺鏇陣%MUSIC算法%DOA
진렬류형%대수라선진%MUSIC산법%DOA
array manifold%logarithm spiral array%MUSIC method%DOA
系统渡达方向(DOA)的估计能力受天线阵的几何结构影响很大.提出了一种新的二维天线阵列流形--对数螺旋阵,该阵列流形具有天线单元数少、天线孔径大、分辨力高的特点.通过粒子群优化方法(PSO)确定了无栅瓣的阵结构参数,计算了此阵的天线方向图并与矩形阵、圆环阵做了比较,利用MUSIC方法进行了二维空间谱估计,仿真结果表明:利用该对数螺旋多天线阵可以实现高分辨二维DOA估计.
繫統渡達方嚮(DOA)的估計能力受天線陣的幾何結構影響很大.提齣瞭一種新的二維天線陣列流形--對數螺鏇陣,該陣列流形具有天線單元數少、天線孔徑大、分辨力高的特點.通過粒子群優化方法(PSO)確定瞭無柵瓣的陣結構參數,計算瞭此陣的天線方嚮圖併與矩形陣、圓環陣做瞭比較,利用MUSIC方法進行瞭二維空間譜估計,倣真結果錶明:利用該對數螺鏇多天線陣可以實現高分辨二維DOA估計.
계통도체방향(DOA)적고계능력수천선진적궤하결구영향흔대.제출료일충신적이유천선진렬류형--대수라선진,해진렬류형구유천선단원수소、천선공경대、분변력고적특점.통과입자군우화방법(PSO)학정료무책판적진결구삼수,계산료차진적천선방향도병여구형진、원배진주료비교,이용MUSIC방법진행료이유공간보고계,방진결과표명:이용해대수라선다천선진가이실현고분변이유DOA고계.
Direction-of-Arrival(DOA)estimation capability of the system is greatly influenced by the geometric configuration of antenna array.A novel two dimensional logarithm spiral array with a few elements,big aperture and characteristics of high resolution is presented.The structure parameters of the array with no-grid lobe is been determined by particle swarm optimization method,antenna patterns of the array are calculated and compared with the rectangular array and uniform circular array(UCA).the MUSIC method is used in twodimensional spatial spectrum estimation,The simulation results show that high-resolution two-dimensional DOA estimation can be achieved by using the logarithmic spiral antennas atray.
