摘要
为了解决三分量海洋环境地磁场测量中的排除船磁干扰的问题,通过对包含船磁干扰的地磁场解算数学模型的研究,发现在模型参数不完全已知的情况下,从磁场测量数据中分离三分量地磁场具有理论可行性。应用该理论建立了卡尔曼滤波迭代算法,对传统解算算法进行了改进。通过计算机仿真分析和实验室验证实验,证明了该算法的可行性。由于算法不需要测量全部地磁场解算的数学模型参数,因此应用该算法进行三分量海洋地磁场测量的工程实践难度将大大降低。
A research is conducted on calculating three-component geomagnetic field from the data polluted by ship’s magnetization field in marine geomagnetic survey.Based on the analysis to the mathematic model which contains the interruption of ship’s magnetic field,the fact is discovered that the three components of geomagnetic field can be calculated as partly knowing the model’s factors.Therefore,an improved algorithm is presented with iterative method of Kalman filtering.The feasibility of this algorithm is testified by computer simulation and laboratory experiment.The complexity of conducting marine survey of three-component geomagnetic field may be reduced as the application of this algorithm for all the model factors is not required.
作者
闫辉
董建军
贾彦茹
杨军
YAN Hui;DONG Jianjun;JIA Yanru;YANG Jun(Big Data&Artificial Intelligence College,Xinyang University,Xinyang 464000,China)
出处
《海洋测绘》
CSCD
2020年第6期11-15,共5页
Hydrographic Surveying and Charting
关键词
磁力测量
三分量地磁场
船舶磁场
磁传感器
卡尔曼滤波
marine magnetic survey
three-component geomagnetic field
ship magnetization field
magnetic sensor
Kalman filtering
