论文部分内容阅读
在短基线水下定位系统中经常用到同步双脉冲信号体制,以便同时获得目标的距离及深度信息。然而,该种信号也会引起测距模糊,而使得作用距离远小于由同步脉冲周期所限定的作用距离。 本文给出一种硬件距离门数据采集方案。该方案能使送往计算机的原始数据按“直达首脉冲——深度信息脉冲(或水面反射信号)……”序列有序排列,以保证系统的有效作用距离。除此之外还减少了计算机的处理时间,保证了系统的实时功能。 文章结尾处给出了某水下运动目标轨迹的实测图。
In the short baseline underwater positioning system often use synchronous dual pulse signal system, in order to obtain both the target distance and depth information. However, this type of signal also causes blurring of the ranging, so that the distance of action is much smaller than the distance of action defined by the period of the synchronization pulse. This article gives a hardware distance gate data acquisition program. The program can make the original data sent to the computer according to the “direct first pulse - depth information pulse (or surface reflection signal) ...” sequence of orderly arrangement to ensure the effective distance of the system. In addition to reducing the computer’s processing time, to ensure the system’s real-time features. The end of the article gives a measured trajectory of a submarine map.