摘要
介绍了基于时延估计的四元十字阵被动定向算法,给出了计算目标方位的精确公式和近似公式,由于近似公式的应用必须符合目标"远场"条件,因此本文利用MATLAB对公式近似引起的目标俯仰角和方位角估计误差进行了仿真分析,根据仿真结果确定了近似公式适用的"远场"范围,得出了目标俯仰角和方位角的近似误差主要受目标距离与四元十字阵阵列间距比值大小影响的重要结论,以上结论为不同工程应用中四元十字阵的基阵尺寸选择提供了理论依据。
This paper presented the algorithm of acoustic passive localization with cross array estimation, and accurate formula and approximate formula for calculating the target^s location based on time delay were proposed. The extent of application for approximate formula was defined through analyzing the approximate error. This paper provided a basis for choosing the cross array＇s size in the engineering field.
出处
《电子测量技术》
2014年第12期29-31,共3页
Electronic Measurement Technology
关键词
四元十字阵
被动定向
时延估计
近似误差
four-element cross array
acoustic passive localization
time delay estimation
approximate error
