BPS水下二次定位系统
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摘要
在海底电缆地震勘探施工中,海底检波器的位置信息对地震信号的采集质量起着至关重要的作用。BPS水下二次定位系统是专门针对海底检波器的位置进行精确测定的一套精密设备。该系统主要由GPS接收机、主控机、应答器、编码器和OBCPos定位软件组成,它通过将声学应答器与被测物绑定,经由水下声学定位处理算法和处理,便可实现地震检波器位置的精确定位。与传统意义上的初至波相比,该系统不仅能够提供更精确的地震检波器位置,而且能显著提高施工速度和生产效率,极大地改善了地震资料品质,取得了良好的应用效果和经济效益,具有广阔的应用前景。
When conducting subsea cable seismic exploration, information of subsea geophone position is of vital importance to the quality of seismic signal acquisition. BPS underwater secondary positioning system is a set of precise equipment designed for getting accurate information of subsea geophone position. This system is mainly composed of GPS receiver, main controller, transponder, encoder and OBCPos positioning software. The basic work principle is that the object is bound with the acoustic transponder to precisely identify geophone position by means of the subsea acoustic positioning processing algorithm. As compared to the traditional first-wave positioning, this system not only provides more precise location of geophone but also remarkably improves operational rate and production efficiency and substantially improves the quality of seismic data. With good application results and economic performance achieved, this system has a broad prospect for application.
When conducting subsea cable seismic exploration, information of subsea geophone position is of vital importance to the quality of seismic signal acquisition. BPS underwater secondary positioning system is a set of precise equipment designed for getting accurate information of subsea geophone position. This system is mainly composed of GPS receiver, main controller, transponder, encoder and OBCPos positioning software. The basic work principle is that the object is bound with the acoustic transponder to precisely identify geophone position by means of the subsea acoustic positioning processing algorithm. As compared to the traditional first-wave positioning, this system not only provides more precise location of geophone but also remarkably improves operational rate and production efficiency and substantially improves the quality of seismic data. With good application results and economic performance achieved, this system has a broad prospect for application.
引文
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[2]王惠南.GPS导航原理与应用[M].北京:科学出版社,2003:13-34.
[3]张炜.水下和海底大地坐标的精确测量[J].应用科技,2002,30(9).
[4]姜瑞林.海底电缆水下声波二次定位成果质量分析[J].石油仪器,1996,10(5).
[5]李亚夫,李海军,姜海,等.新型浅海气枪震源阵列收放技术[J].石油科技论坛,2011,30(2).
[6]杨怀春,刘怀山.声波二次定位技术在KD-1高精度地震采集中的应用[J].海洋地质动态,2004,20(4).
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