A noise suppression method for superconducting full tensor aeromagnetic gradient measurement data
A noise suppression method for superconducting full tensor aeromagnetic gradient measurement data
复制标题
超导全张量航磁梯度测量数据的噪声抑制方法
DOI：
10.1111/1755-6724.14136
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Ji Wang
中科院分区：
文献类型：
--
作者：
Ziqi Guo;Shuangxi Ji;Yanchao Qiao;Ji Wang
超导量子干涉仪（SQUID）的迅速发展使高精度的航磁梯度直接测量成为可能。超导全张量磁梯度仪提供的信息量大、磁场灵敏度高等特点是未来新一代航空磁探测的发展方向。传感器还为噪声抑制带来了更高的精度。如何有效地抑制航空物探噪声是一个关键技术问题。除了采用硬件设备干扰的方法外，大多数常规的软补偿方法只考虑传统干扰源对测量的影响，而在实际飞行测量过程中往往是一个比较复杂的系统噪声，仅借助单一的模型和相关的各种复杂过程很难充分滤除干扰。本文提出了一种梯度磁测数据处理的补偿方法，比较系统地进行了补偿，提高了实际测量数据的有效性。本文提出了一种全张量梯度航磁数据处理的超导方法。该方法可以有效地避免使用多源噪声测量平台。它包括传感器内部干扰、测量平台外部干扰、感应磁场干扰、测量系统误差干扰等，以提高补偿磁场梯度的数据精度，而整个补偿方法的系统化处理过程也保证了实际数据补偿处理的效率和易用性。鉴于实际飞行测量设备的局限性，GPS和INS的数据采样率与磁强计和磁梯度仪的采样率不一致，因此相应计算得到的参考磁场数据的分辨率低于磁传感器测量信号的分辨率。在这些条件下，插值精度是允许的，
Aeromagnetic gradient direct measurement with high accuracy becomes possible with the rapid development of a superconducting quantum interference device (SQUID). The superconducting full tensor magnetic gradiometer provides a large amount of information, and high magnetic field sensitivity and other characteristics is the future direction of the new generation of airborne magnetic detection. Sensors also brought greater precision to noise suupression. How to effectively suppress aero-geophysical noise is a key technical problem. In addition to the hardware device by the method of jamming, most conventional soft compensation methods only consider the impact of traditional sources of interference measurements, but often a more complex system of noise in actual flight measurement process, only by means of a single model and associated all kinds of complex processes is difficult to adequately filter out interference. We propose a gradient magnetic data processing method of compensating a more systematic compensation to improve the effectiveness of the actual measurement data. This paper presents a full tensor gradient aeromagnetic data processing superconducting method. The method can effectively eliminate the use of a multi-source noise measuring platform involved. It includes a sensor internal interference, external interference measurement platform, the induced magnetic field interference, interference measurement system error etc. to improve the data accuracy of the compensation magnetic field gradient, and the entire compensation method of systematic processing process also guarantees the actual data compensation processing efficiency and ease of use. In view of the limitations of the flight measurement equipment in practice, the data sampling rate of GPS and INS is inconsistent with the sample rate of the magnetometer and magnetic gradient meter, so the resolution of reference magnetic field data resulting from the corresponding calculation is lower than the resolution of the magnetic sensor measurement signal. Under these conditions interpolation precision is allowed, and the data