基于ARMA模型的海洋磁力测量数据小波去噪方法研究
Research on wavelet denoising method for marine magnetic measurement data based on ARMA model
罗兵1
作者信息
- 1. 江西核工业测绘院集团有限公司,江西 南昌 330038
- 折叠
摘要
海洋磁力测量是指通过安置在海底质子旋进磁力仪来直接测量地磁场,这样在海洋表面和海底同时测量,就可以得到地磁场的垂直梯度.但处理海洋磁力测量数据时不仅需要消耗大量时间,并且分块处理拼图还会导致精确度较低.为了实现对海洋地质层参数的准确测量,提出基于ARMA模型的海洋磁力测量数据小波去噪方法.构建海洋磁力测量数据的小波降噪和滤波检测模型,通过对海洋磁力测量数据的类型化分类识别,进行多波束的信息分割,实现对海洋磁力测量数据的自动滤波降噪,使得输出数据更清晰、自然.测试结果表明,使用ARMA模型后,输出数据的信噪比较之前提升了33.663 2 dB,海洋磁力测量数据去噪效果好.通过ARMA模型对海洋磁力数据进行去噪,有助于达到更精确的海洋磁力测量数据,为研究地磁场及其变化、海洋地质构造、矿产预测和国防建设提供了重要支持.
Abstract
Marine magnetic measurement refers to the direct measurement of the geomagnetic field by installing a proton precession magnetometer on the seabed,so that the vertical gradient of the geomagnetic field can be obtained by measuring both the ocean surface and the seabed simultaneously.But when processing ocean magnetic measurement data,it not only takes a lot of time,but also results in lower accuracy due to block processing of puzzles.In order to achieve accurate measurement of marine geological layer parameters,a wavelet denoising method based on ARMA model for marine magnetic measurement data is proposed.Construct such a wavelet denoising and filtering detection model for marine magnetic measurement data by classifying and identifying the types of marine magnetic measurement data to perform multi beam information segmentation,and have automatic filtering and denoising of marine magnetic measurement data achieved,making the output data clearer and more natural.The test results show that after using the ARMA model,the signal-to-noise ratio of the output data has increased by 33.663 2 dB compared to it before,and the denoising effect of marine magnetic measurement data is good.The use of ARMA models for denoising marine magnetic data helps to achieve more accurate marine magnetic measurement data,and provides important support for studying geomagnetic fields and their changes,marine geological structures,mineral prediction,and national defense construction.
关键词
ARMA模型/海洋磁力测量数据/小波去噪Key words
ARMA model/ocean magnetic force measurement data/wavelet denoising引用本文复制引用
出版年
2024
NETL
NSTL
万方数据