可控测角精度和范围的数字阵列单脉冲和差波束优化  

Sum and Difference Patterns Optimization for Digital Array with Controllable Accuracy and Range of Angle Estimation

作　　者：马晓峰[1] 沈爱松 盛卫星[1] 韩玉兵[1] 张仁李[1] MA Xiaofeng SHEN Aisong SHENG Weixing HAN Yubing ZHANG Renli(School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

机构地区：[1]南京理工大学电子工程与光电技术学院,南京210094

出　　处：《电子与信息学报》2016年第12期3107-3113,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61501240;11273017);上海航天基金重点项目(SAST201437)~~

摘　　要：针对大角度覆盖范围目标快速定位以及机动目标精确角度跟踪的需要,该文提出一种基于可控测角精度和范围的数字阵列单脉冲和差波束迭代快速优化算法。算法可以根据期望的测角精度或期望测角区间,以函数形式给出修正的期望和差波束方向图主瓣区域,然后采用所提出的快速区域加权方向图综合算法闭式优化得到和差波束方向图。该算法通过迭代优化可以在给定输入信噪比和测角精度需求的前提下,最大化单脉冲角度估计的有效测角区间,或者在给定的测角范围内,最优化测角精度。A fast iterative optimization algorithm for sum and difference patterns with controllable accuracy and range of angle measurement is proposed, which can be used in fast targets location under wide angle coverage and accurate angle tracking of maneuvering targets. Under expected accuracy or range of angle estimation, the expected main-lobe of sum and difference patterns are modified in the form of sinc function and its derivative respectively, then the sum and difference patterns are rapidly synthesized with the proposed regional weighting pattern synthesis algorithm in the close form. The proposed iterative optimization algorithm can effectively maximize the range of effective angle measurement at a given input signal to noise ratio and angular accuracy, or get optimal accuracy within a given range of angle measurement.

关 键 词：单脉冲角度估计 方向图综合 测角精度 测角范围 

分 类 号：TN957.51[电子电信—信号与信息处理] TN820.12[电子电信—信息与通信工程]