对于基于方位扫描的舰载比幅测向系统，常规的副瓣抑制方法存在副瓣抑制效果不理想且降低目标侦察概率的问题。针对该问题，本文提出一种比幅测向系统自适应副瓣抑制补偿方法。其基本原理是对辅助天线测得的信号幅度进行自适应地增加或减小，补偿完成后形成一张副瓣抑制补偿表；接收机工作时可根据频率和信号入射波束号进行副瓣抑制补偿值的调用；详细阐述该方法的具体实现过程，并进行仿真和工程验证。结果表明，该方法能有效提升比幅测向系统的副瓣抑制效果从而提高舰船电子侦察的精确度，同时能提高海上目标的侦察概率。
For the shipborne amplitude comparison direction finding system based on azimuth scanning, the conventional side-lobe suppression method has the problems of poor side-lobe suppression effect and decreased reconnaissance probability of targets. Aiming at the problems, an adaptive side-lobe suppression compensation method for amplitude comparison direction finding system is proposed in this paper. Its basic principle is to adaptively increase or decrease the signal amplitude measured by the auxiliary antenna, and the compensation is completed to form a side-lobe suppression compensation table. When the receiver works, the side-lobe suppression compensation value can be called up according to the frequency and signal incidence beam number. The paper elaborates on the specific implementation process of the method and conducts simulation and engineering verification. The verification results show that the method can effectively improve the side-lobe suppression effect of amplitude comparison direction finding system and improve the accuracy of shipborne electronic reconnaissance, and can also improve the probability of target reconnaissance at sea.
2025,47(7): 141-146 收稿日期：2024-5-27
DOI：10.3404/j.issn.1672-7649.2025.07.026
分类号：TN971.1
作者简介：陈文静(1990-),女,硕士,工程师,研究方向为数字信号接收与处理
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