摘要
针对基于移相相减技术的双线阵左右舷分辨方法(移相相减法)在端射方向的能量衰减问题,依据移相相减法所得心形指向性函数变化形式,提出一种基于能量补偿修正的移相相减方法。该方法根据移相相减技术得到扫描角度上的合成数据;依据心形指向性函数变化形式与扫描角度关系,采用能量补偿修正技术降低扫描角度对合成波束的影响。理论推导分析和仿真实验结果均表明,当目标位于端射方向时,相比原移相相减法,本方法可以对目标实现有效探测;在同一衰减比下,探测能力增加了10°以上,增加了移相相减法对目标方位角的适用范围。
For the problem of energy attenuation of phase shift subtraction method in the direction of end-fire,according to the variation of heart-shaped directivity function,a phase shift subtraction method based on energy compensation technique is proposed.Firstly,the synthesized data is obtained by the phase shift technique in scanning angle.Then,utilizes the energy compensation technique reduce the impact of heart-shaped directivity function on the synthesized beam.Theory analysis and simulation experiment results show that,when the target is in the direction of end-fire,this method can effectively detect the target,the performance is improved 10°in the same attenuation,improves the robust of phase shift subtraction method for bear angle of target,and has better robustness and effectiveness.
作者
李雪林
王会良
许浩
LI Xue-lin;WANG Hui-liang;XU Hao(Department of Mechanical and Electrical Engineering,Luoyang Polytechnic,Luoyang 471000,China;Department of Mechanical and Electrical Engineering,Henan University of Science and Technology,Luoyang 471003,China;Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China)
出处
《火力与指挥控制》
CSCD
北大核心
2020年第3期128-132,共5页
Fire Control & Command Control
基金
国家自然科学基金资助项目(61202285)。
关键词
左右舷分辨
移相相减
心形指向性
能量补偿
port/starboard discrimination
phase shift subtraction
heart-shaped directivity function
energy compensation
