A Method of Transient Electromagnetic Detection for Japanese ACWs on Land

Abstract

The invention discloses a transient electromagnetic method for detecting land Japanese abandoned chemical weapons. The method comprises the steps that a known and precisely positioned point without any obstructions and signal interference in the surrounding is selected, and a base station and a moving station are erected at the point; the moving station and the base station are connected and synchronized; a standard point is selected for coordinate correction; after the coordinate correction is completed, setting-out is carried out; a detection coordinate system is established; the base station is fixed; relative coordinates are input; the coordinate axis value and the positive direction are determined according to a detection scheme; a transient electromagnetic instrument is used for detecting in a detection area; the position of a measuring line and the distance between measure points are determined according to the detection scheme; the measurement network of the whole area is drawn; the position of each measure point is marked, and successive measurement is carried out until the measurement of the whole detection area is completed; a multi-channel map is drawn based on the detection data of the whole area; and according to the measured data, a full map of the apparent resistivity of the detection area is drawn to determine an abnormal area.

Description

technical field [0001] The invention relates to a method for transient electromagnetic detection of Japanese abandoned chemical weapons on land. Background technique [0002] At present, 60 Japanese ACW burial sites have been discovered in China, covering 19 provinces (regions), and there are as many as 1,241 cases with exact use time, place and injury records. A lot of manpower, material and financial resources have been invested in the disposal of these Japanese abandoned chemical shells and poisons. [0003] At present, the exact number of bombs in the Dunhua area of ​​Jilin Province and the Meihekou area of ​​Jilin Province are still to be further verified; and the areas where the bombs may be buried after preliminary investigations include Harbin, Acheng, Qiqihar, Heilongjiang Province, Hunchun, and Changchun in Jilin Province , Qiuligou and Malugou in the Dunhua area. [0004] Nowadays, the methods for detecting Japanese ACW on land mainly include magnetic method and...

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Problems solved by technology

[0004] Nowadays, the methods for detecting Japanese ACW on land mainly include magnetic method and ground radar. The combination of these two methods is characterized by high efficiency and high precision, but the detection depth is low. After so many years of investigation and research, the shallow surface The target body has basically been checked, and then the detection of Japanese ACW will turn to the deep, and the magnetic method and ground radar do not have enough detection accuracy for the deep target

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