【摘要】 介绍了调频扫描波束的原理,以及使用DSP产生发射信号的16基元线列阵发射系统。该系统可在发射调频脉冲的同时连续扫描搜索平面,进行目标测向测距。通过发射和接收双重波束形成,将同一尺寸基阵的方向性指数提高20dB,并大幅度简化接收设备。这一技术可用于雷达和声纳设备上。更多还原

【Abstract】 A 16 channel high power sonar transmitting system working at a frequency of about 4.5kHz has been developed. Each channel is driven by a 500W high power amplifier capable of supplying to each element and the inputs to the amplifiers are driven from a DSP digital signal processor. This paper describes the details of the system and the principle of its working mode i. e. linear FM scanning beam transmitting mode and some measurements of its performance.更多还原