一种声呐脉冲参数的实时测量技术

A Real Time Technique for Measuring Parameters of Sonar Pulse

为了实时测量水中声呐脉冲信号的各项参数,开发了一种高精度、自动化的声呐脉冲参数测量技术。该技术采用程控增益控制对大动态范围的输入信号进行压缩,能实时测量输入声呐脉冲信号的幅度、脉宽和周期,以及单频脉冲的频率,并可通过上位工控机显示并保存测量结果。系统通过水池调试、水库试验,证实该技术动态范围大、抗干扰能力强、对弱信号具有检测能力强、测量精度高等特点。

To measure the parameters of sonar pulse, a high precision and automatic sonar pulse measuring technique is developed. The technique compresses the input signal with large dynamic range via programmed gain control. It can measure the amplitude,pulse width and period of the input sonar pulse. It can measure the frequency of the CW pulse also. The parameters can be recorded by the system. The results from tests at tank and reservoir demonstrated that the technique has characteristics as follows： accurate parameter measurement ,input with large dynamic range,ability of weak signal detection and anti-jamming.