CAJ | 학술논문

为降低相关干涉仪测向的计算复杂度，提出了一种基于多分辨率相关处理的快速测向算法，与在全角度范围计算相关系数的传统相关干涉仪不同，快速算法采用逐级测量的方式，先粗测来波方向，用粗测的结果做指引，在较小的角度范围内进行精细测量，从而显著减少了算法计算量。同时，快速算法在测向精度方面没有损失。推导了粗测和细测样本步长的最优比例关系。理论分析和计算机仿真证明该算法能够大幅减少算法计算时间，提出的算法对瞬时测向具有实用意义。
위강저상관간섭의측향적계산복잡도，제출료일충기우다분변솔상관처리적쾌속측향산법，여재전각도범위계산상관계수적전통상관간섭의불동，쾌속산법채용축급측량적방식，선조측래파방향，용조측적결과주지인，재교소적각도범위내진행정세측량，종이현저감소료산법계산량。동시，쾌속산법재측향정도방면몰유손실。추도료조측화세측양본보장적최우비례관계。이론분석화계산궤방진증명해산법능구대폭감소산법계산시간，제출적산법대순시측향구유실용의의。
In order to reduce the computational complexity of correlative interferometer direction finding (DF) ,this paper presents a fast DF algorithm based on multi-resolution correlation process-ing .Unlike the traditional correlative interferometer that calculates the correlation coefficients in the entire range of angle ,the proposed fast algorithm uses the mode of stepwise measurement . Firstly ,the direction of wave arrival is measured roughly ,then the rough measurement results are taken as guidance ,fine measurement is performed in a smaller range ,w hich shortens the running time dramatically .At the same time ,the fast algorithm does not cause any loss of precision .The op-timal scale between samples for rough measurement and samples for fine measurement is deduced . Theoretical analysis and computer simulation results confirm that the proposed fast algorithm can shorten the computation time remarkably ,the proposed algorithm has practical application value in instantaneous DF .