Method for judging radioactive direction source and measuring system

The invention discloses a method for determining a radioactive direction source and a measurement system, and belongs to the technical field of radioactive measurement, and the method comprises the steps: arranging basic detection units according to a three-dimensional matrix sequence, building a three-dimensional coordinate system according to a three-dimensional matrix array, and recording the coordinates of the basic detection units; when radiation detection data of rays in each basic detection unit in the detector is obtained, the final shield orientation of radiation dose leakage is obtained through Cartesian two-dimensional rectangular coordinate conversion and processing of a radiation detector rear-end software processing system through coordinate point data. A three-dimensional matrix sequence radiation detection device is established by using a spherical coordinate system, a basic detection unit can be used for automatically fitting a curve, obtaining a ray direction angle, simulating and forming a