高分辨图像声纳预成多波束的指向性湖上测量方法

声纳系统的指向性是保证设备完成预定功能的重要指标，在湖上实地测量系统的指向性有很大困难，尤其对于窄波束系统的指向性，则根本无法测量。为此，在分析了湖的实际状况和设备所具有的潜力后，提出了一种行之有效的指向性测量方法，即利用数据采集系统，及距离门控制实现波束测量的方法。该方法不但解决了因湖水的流动、声源与接收基阵之间的位置不断发生相对运动造成波束测量困难的问题，同时也大大提高了测量效率。

Measurement of directivity on lake for multi-beam high resolution image sonar system

In order to measure the directivity on lake, especially for the narrow beam,an effective measurement method is proposed by analyzing the inherent potential of the equipment and the circumstance on lake,and obtaining an beam bearing measurement by using the data acquisition system and distance-gate,which overcomes the difficulty of beam measurement,arising from the relative movement between location of acoustic source and the receiving array due to water flowing and greatly increases the measurement efficiency .