摘要
一个为海洋地层探测而设计的互补码信号发生和处理系统已经研制成功。其实施方案是:声源交替地发射一对互补码信号中的两个互补部份,接收机相应地进行回波信号的实时相关处理,然后再在时间上一一对应地把相继两次的相关处理输出实时相加,就得到无旁瓣的终端输出在地层探测图上显示。波浪起伏会对回波到达时间和信号码元间隔进行调制,由此产生的“去互补”和“去相关”效应会降低互补码信号处理的性能。本文着重研究了这个问题,并通过计算机模拟预测了在实际的海洋地层探测中应用互补码脉冲压缩技术的有效性。
A pulse-compression system composed of a complementary coding signal generator and a corresponding processor has been developed. The working principle of using this system in seismic profiling at sea is described, and the effect of wave modulation on the c. c. signal processing is examined in detail. Computer simulations have confirmed the effectiveness of appling this new approach to practical seismic profiling.
出处
《声学学报》
EI
CSCD
北大核心
1989年第6期438-443,共6页
Acta Acustica
