提高双检检波器陆检信噪比的研究

Imporvement for the SNR of dual sensor

用双检检波器接收是目前海底电缆勘探的主流方法,但双检检波器中的陆检接收效果一直处于较差的状态,其表现形式为信噪比偏低,抗干扰能力较差,严重影响了生产时效和后期资料的处理。本文从仪器原理的角度出发,通过对检波器与海底的耦合以及在有限的空间内对动圈检波器进行有效组合的研究,提高了陆检的信噪比和抗干扰能力,进一步提高了双检检波器的采集效果。

Currently the main stream method is using the dual sensor for OBC exploration, but the geophone of dual sen- sor always has been in a poor state, the manifestations is low signal-to-noise ratio and poor anti-interference ability. It has seriously affected the production limitation and post information processing. From the point of view of the in- strument principle, this paper introduced how to improve the signal-to-noise ratio and anti-interference ability of the land geophone by the detector and seabed coupling and effective combination in the limited space of the moving coil geoDhone research, to further imlorove the dual sensor acquisition effect.