一种高精度通用水声接收机的设计与研究

Research and Design of High Precision General Underwater Sound Receiver

为了接收水下目标反射回波 ,研究并设计了一种高精度、大动态范围的通用水声接收机。系统采用一套硬件电路实现了恒 Q值的多个回波频率的接收 ,并采用混响增益控制代替传统的时间增益控制 ,实现了对水下信号的大动态范围压缩和海洋噪声背景的归一化处理。海上试验证明 ,系统具有精度高、适应性强、动态范围大、电路性能稳定、经济实用等特点。介绍了该系统的工作原理、硬件结构及系统性能等。

In order to receive the echo of the underwater target, a method to design a kind of high precision, wide dynamic range, general receiver is presented in this paper. One set of circuits with constant parameter Q is used to realize the echo receiving of different frequencies. Instead of the traditional time gain controlling technique, reverberation gain controlling technique is applied to realize large dynamic range condensing and reverberation background normalization. Through sea test, it has been proved that the system has high precision, good adaptability, wide dynamic range and stable performance. The principle, the hardware construction and its performance are discussed in this paper.