基于等长基线干涉仪的单脉冲被动定位方法  

Mono-pulse passive location method based on equal-length baseline interferometers

作　　者：李蔚[1] 郭福成[1] 柳征[1] 姜文利[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《系统工程与电子技术》2015年第2期266-270,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金(61302141)资助课题

摘　　要：针对单站单脉冲的被动测距问题,提出了一种基于等长基线相位干涉仪的单脉冲定位方法。该方法采用至少3个天线构成等长基线干涉仪对,利用等长基线干涉仪接收到辐射源信号球面波的波前相位2π模糊数相同的原理,通过等长基线相位差的差值和来波方向,确定信号源与观测站之间的距离。在对该算法的基本原理和无模糊定位条件描述的基础上,分析了定位性能,并通过计算机仿真验证了该算法的有效性。A passive ranging method with a single pulse based on equal-length baseline interferometers is proposed for the passive location system. The method uses at least three antennas to compose equalqength base- line interferometer pair. The phase ambiguity can be canceled out by the phase differences of equal-length base- line interferometers with the same 2π ambiguity numbers, and the range of the emitter can be computed by com- bining the direction of arrival. Based on introduction of the theory and unambiguous condition of the method the performance of the algorithm is analyzed and verified by computer simulations.

关 键 词：测距 干涉仪 相位差 模糊 

分 类 号：TN971[电子电信—信号与信息处理]