| 摘要: |
| 单脉冲测角是一种计算简单、稳健性好的高精度测角方法。当存在旁瓣干扰时，结合自适应波束合成的自适应单脉冲算法能很好地抑制干扰同时保持测角精度，但当干扰进入主瓣时，传统的单脉冲测角会出现单脉冲比失真的问题，从而导致测角误差较大。为了克服主瓣干扰条件下的单脉冲比失真问题，提出一种调零线性约束的差波束自适应合成方法，抑制主、旁瓣干扰同时保持单脉冲比曲线。仿真验证了算法的有效性,并与三点线性约束算法的性能进行比较。 |
| 关键词: 主瓣干扰 单脉冲测角 天线方向图合成 自适应波束形成 |
| DOI：DOI:10.3969/j.issn.1672-2337.2021.03.010 |
| 分类号:TN958 |
| 基金项目: |
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| Synthesis of Adaptive Monopulse Patterns Under Zeroing-Linear Constraint |
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CHEN Ziang，YANG Jiawei，TAO Chenchen
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1. Beijing Institute of Remote Sensing Equipment, Beijing 100854, China;2.2. Defense Technology Academy of CASIC, Beijing 100854, China
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| Abstract: |
| Monopulse angle estimation is a high-precision angle measurement method with simple calculation and good robustness. When sidelobe interference is present, the adaptive monopulse algorithm combined with adaptive beamforming can effectively suppress the interference and maintain the angle measurement accuracy. However, when the interference enters the mainlobe, the traditional monopulse angle measurement will have the problem of monopulse ratio distortion, resulting in a large angle measurement error. In order to overcome the monopulse ratio distortion under the condition of mainlobe interference, an adaptive synthesis method of difference beam with zeroing linear constraint is proposed to suppress the mainlobe and sidelobe interference while maintaining the monopulse ratio curve. The effectiveness of the proposed algorithm is verified by simulation, and the performance of the algorithm is compared with the three point linear constraint algorithm. |
| Key words: mainlobe interference monopulse angle estimation antenna pattern synthesis adaptive beamforming |
