Detection system and method

A detection system, comprising:

• a distributed radiation source having a plurality of radiation source focus points which emit rays to irradiate an object under detection, wherein the plurality of radiation source focus points are divided into a certain number of groups, and wherein the plurality of radiation source focus points are activated independently in an order under control;
• a primary collimator configured to limit rays of each of the radiation source focus points such that the rays emit into an XRD detection device;
• and
• the XRD detection device including a plurality of XRD detectors, wherein the plurality of XRD detectors are divided into the same number of groups as the radiation source focus points, and XRD detectors in a same group are arranged to be separated by XRD detectors in other groups, and wherein when a radiation source focus point is activated, XRD detectors having the same group number as the radiation source focus point start to count and XRD detectors having other group numbers maintain silence such that rays emitted by the radiation source focus points are merely received by the XRD detectors having the same group number as the radiation source focus point.