摘要
抑制干扰是电子战和信息处理的关键技术,滤除窄带干扰则是抑制干扰的重要内容。通常雷达发射信号的带宽受到大量的广播电台、短波通信干扰的限制,很难找到较宽的且未被污染的干净频带,因此导致了接收机端很低的信干噪比,较为理想的方法是在一定的带宽要求下抑制干扰,为此我们提出了一种基于频域滤波的高自适应的窄带干扰抑制方法。计算机仿真结果表明:该方法可以有效地提高接收机的信干噪比,从而实现了大幅度改善雷达发现和检测目标的能力。
The suppression of interference is one of the key techniques for communication processing and electronic war, and the elimination of narrow-band interference is an important component. Generally, the selection of radar＇s transmitted bandwidth is limited by lots of crowded and powerful broadcast, radio and short-wave communication interference. It is difficult which results in a low ratio of SINR. A desired method to find a broad and uncontaminated frequency band, is suppressing interference within a definite bandwidth. A high adaptive method for narrow-band interference suppression based on frequency domain was given. The computer simulation result and practical experimentation suggests that it can greatly increase the SINR for receiver by using this method, so greatly improve on target detection capability for radar.
出处
《光电子技术与信息》
2005年第5期64-68,共5页
Optoelectronic Technology & Information
关键词
窄带干扰
频域滤波
信干噪比
narrow-band interference
frequency domain filter
signal interference noise ratio（SINR）
