CAJ | 학술논문

针对形状不规则的平面阵列米波雷达由于各行天线阵元数不同引起较大的测高误差，提出一种增加导向矢量系数的改进最大似然超分辨测高方法，进而推广到所有的平面阵列米波雷达。该方法首先对各行天线接收的目标回波信号进行行合成，然后基于各行不同的天线阵元数来构造各行天线的幅度归一化导向矢量系数，并重新构建阵列导向矢量，最后使用最大似然超分辨算法进行测高处理。并通过计算机仿真验证了该方法的有效性。
침대형상불규칙적평면진렬미파뢰체유우각행천선진원수불동인기교대적측고오차，제출일충증가도향시량계수적개진최대사연초분변측고방법，진이추엄도소유적평면진렬미파뢰체。해방법수선대각행천선접수적목표회파신호진행행합성，연후기우각행불동적천선진원수래구조각행천선적폭도귀일화도향시량계수，병중신구건진렬도향시량，최후사용최대사연초분변산법진행측고처리。병통과계산궤방진험증료해방법적유효성。
The irregular shaped planar array of VHF radar causes large height finding error due to the different number of antenna elements in different lines.We propose an improved maximum likelihood height finding method into which the steering vector coefficient is introduced.It can be extended to all planar array VHF radars.Firstly,the target echo signals from each line of the antenna are synthesized.Then the antenna steering vector amplitude normalization factor is constructed based on the different element number of each line,and the array steering vector is rebuilt.Finally,the maximum likelihood super resolution algorithm is used to measure the altitude.Simulations are made to verify the effectiveness of the method.