质子旋进式海洋地磁日变站的设计与实现  

Design and Implementation of Proton Precession Marine Geomagnetic Base Station

作　　者：李先锋 郑彦鹏 华清峰 刘凯 马龙 张林清 LI Xian-feng;ZHENG Yan-peng;HUA Qing-feng;LIU Kai;MA Long;ZHANG Lin-qing(First Institute of Oceanography, MNR, Qingdao 266061, China;Key Laboratory of Marine Geology and Metallogeny, MNR, Qingdao 266061, China;Laboratory for Marine Geology, Pilot Qingdao National Laboratory for Marine Science and Technology (Qingdao)

机构地区：[1]自然资源部第一海洋研究所,山东青岛266061 [2]自然资源部海洋地质与成矿作用重点实验室,山东青岛266061 [3]青岛海洋科学与技术试点国家实验室,海洋地质过程与环境功能实验室,山东青岛266061

出　　处：《海洋科学进展》2020年第3期446-454,共9页Advances in Marine Science

基　　金：青岛海洋科学与技术试点国家实验室开放基金项目——基于移动载体的高精度海洋地磁矢量一体化测量技术研究(QNLM2016ORP0201);中国大洋矿产资源研究开发协会项目——大西洋靶区多金属硫化物调查区综合地球物理异常与找矿应用(DY135-S2-2-04);青岛海洋科学与技术试点国家实验室鳌山科技创新计划——新型海底地磁日变站(2015ASKJ03-03-03);深海资源勘查技术与装备体系发展战略研究(2016ASKJ15-02);泰山学者工程专项(TSPD20161007);国家自然科学基金委员会-山东省人民政府联合基金项目——海洋地质过程与环境(U1606401)。

摘　　要：目前国内在深远海地磁测量中普遍采用潜标加挂磁力仪的作业方式测量地磁日变,针对其布放、回收操作复杂且劳动强度大的缺点,设计了一套新的一体化便携式质子旋进式海洋地磁日变站。基于质子旋进式地磁测量的工作原理,采用多周期同步测量法和线性插值的过零数频算法提高了拉莫尔旋进信号的测频精度;在现有声学释放系统的基础上对声学应答和释放过程进行了改进,采用Goertzel算法提高了声学释放信号频率检测的计算效率和可靠性;将研制的仪器与国际商用仪器进行了陆地对比测试和海上实验。结果表明,研制的海洋地磁日变站性能指标满足海洋地磁测量数据的日变改正精度要求,可靠性高,而且海上操作便捷,可替代传统的海洋地磁日变测量的作业方式。In order to overcome the shortcomings of complex operation(deployment,release and recovery)and high labor intensity for geomagnetic diurnal variation measurement with magnetometer attached to anchorage system by submarine buoy during deep-sea magnetic survey,it need to design an integrated and portable proton precession marine geomagnetic base station.This paper introduces the basic working principle of proton precession geomagnetic measurement,and elaborates the main control system,geomagnetic measurement unit and acoustic release system of the instrument.The frequency measurement accuracy for the Larmor precession signal is improved by using multi-period synchronous measurement method and linear interpolation zero-crossing frequency algorithm.Goertzel algorithm is used to improve the computational efficiency and reliability for acoustic response and release.Then the instrument and commercial instruments are tested on land and at sea.The results show that the performance of the instrument can meet the accuracy requirements of deep-sea magnetic diurnal variation correction measurement,and the operation at sea is convenient and reliable.It proves the validity of the integrated design of marine geomagnetic base station based on proton precession in marine geomagnetic diurnal variation measurement.

关 键 词：海洋地磁日变站 一体化 质子旋进式原理 海洋地磁测量 

分 类 号：P716[天文地球—海洋科学]