US 12,117,583 B1
Method and device for mobile rapid exploration of mineral resources
Lili Kang, Beijing (CN); Zhongxing Wang, Beijing (CN); Zhiyao Liu, Beijing (CN); Tianxin Zhang, Beijing (CN); and Zihang Li, Beijing (CN)
Assigned to Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing (CN)
Filed by Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing (CN)
Filed on May 30, 2024, as Appl. No. 18/677,971.
Claims priority of application No. 202311382139.2 (CN), filed on Oct. 24, 2023.
Int. Cl. G01V 3/16 (2006.01); G01V 3/38 (2006.01)
CPC G01V 3/16 (2013.01) [G01V 3/38 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for mobile rapid exploration of mineral resources, comprising following steps:
step 1, on one hand, adopting a semi-airborne artificial source exploration method to cooperate with a main magnetic sensor and a slave magnetic sensor to collect signals, wherein the slave magnetic sensor collects low-frequency motion noise, and the main magnetic sensor synchronously collects low-frequency motion noise and vertical magnetic field signals; on an other hand, collecting vertical magnetic field signals of a same survey area through a ground vertical magnetic field sensor;
step 2, performing correlation mapping of the low-frequency motion noise in the main magnetic sensor by using the low-frequency motion noise collected by the slave magnetic sensor, and completing a primary estimation of the low-frequency motion noise of the main magnetic sensor;
step 3, performing correlation mapping of a useful signal contained in the primary estimation of the low-frequency motion noise of the main magnetic sensor by using the vertical magnetic field signals collected by the ground vertical magnetic field sensor in the step 1, and then eliminating the useful signal on a basis of the primary estimation of the low-frequency motion noise of the main magnetic sensor obtained in the step 2 to obtain a secondary estimation of the low-frequency motion noise of the main magnetic sensor; and
step 4, regarding the secondary estimation of the low-frequency motion noise of the main magnetic sensor obtained in the step 3 as a low-frequency motion noise part in the signals collected by the main magnetic sensor in the step 1, so as to cancel the low-frequency motion noise of the main magnetic sensor, wherein a cancelled signal part is a vertical magnetic field signal responded by the main magnetic sensor.