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气枪人工震源探测过程中,为了实现数据实时处理,及时监控气枪信号激发情况,本文采用Java编程自主研发一套气枪信号实时处理系统.该系统主要采用频谱白化叠加技术和实时递归算法实现自动叠加和实时滤波功能,并设计开发出单炮实时滤波显示界面、多炮自动叠加显示界面、台站分布界面.系统应用于2015年福建及台湾海峡地壳深部构造探测实验中,实验结果得出棉花滩水库300次叠加可以清晰的追踪到315 km的S和220 km的P,S明显强于P;石黄峰水库300次叠加可以较好的追踪到294 km的S且隐约可以追踪到170 km的P,P很弱;海域SP74固定点300次叠加可以清晰的观测到372km的P、S,且P、S发育都较强,其中在200 km后,可以很清晰的观测到P系列存在多组震相;研究表明:海上的激发效果优于陆地,水库底部的淤泥层会对信噪比造成不利影响.另外,系统整体运行稳定,功能及性能达到了设计预期,证明了系统设计合理性与实用性.该系统实时处理结果为此次实验快速有效评定激发效果及指挥部作出决策发挥着至关重要的作用.
In order to realize real-time data processing and timely monitoring of air gun signal excitation, this paper uses Java programming to develop a set of air gun signal real-time processing system.The system mainly uses the spectrum whitening and stacking technology and real-time recursive algorithm to achieve automatic overlay and Real-time filtering function, and designed and developed a single gun real-time filter display interface, multiple gun automatic superimposed display interface, station distribution interface.The system was applied to 2015 deep sea and rock formation in Fujian and Taiwan Strait exploration test, the experimental results obtained Mianhuatan Reservoir 300 superimposes can be clearly traced to 315 km of S and 220 km of P, S is significantly stronger than P; 300 times the Shihuang reservoir reservoir can be better tracked to 294 km of S and can be traced to 170 km P, P And the P and S of 372km can be clearly observed. The development of P and S is strong. After 200 km, there are many groups of seismic facies in the P series; The research shows that the excitation effect at sea is better than that of the land, and the silt layer at the bottom of the reservoir will adversely affect the signal-to-noise ratio.In addition, the overall system operation is stable and the function and performance reach the set Based on the expected results, the rationality and practicability of the system design were proved.The results of real-time processing of the system played a crucial role in the rapid and effective evaluation of the stimulating effect and the command decision made by the headquarters in this experiment.