Inspection system and inspection method

An inspection system for an aviation pallet cargo, comprising:

• a ray source configured to emit X-rays and arranged to be rotatable between a plurality of scanning positions around a rotation axis, wherein the ray source comprises a separate housing to define a vacuum space and comprises a plurality of target spots enclosed within the housing, and a rotation angle of the ray source between two adjacent scanning positions is greater than an angle of adjacent target spots of the ray source relative to the rotation axis;
• a detector assembly configured to receive X-rays emitted from the ray source and passing through an inspection region of the inspection system;
• and
• a conveying device configured to carry an aviation pallet cargo to be inspected,
• wherein the ray source and the detector assembly are movable in a traveling direction relative to the conveying device so that the aviation pallet cargo to be inspected enters the inspection region, and the traveling direction is parallel to the rotation axis, and
• wherein the inspection system is configured such that:
• the ray source and the detector assembly move in the traveling direction relative to the conveying device and the ray source emits X-rays, when the ray source is located at one of the plurality of scanning positions;
• and the ray source rotates around the rotation axis to another one of the plurality of scanning positions when the ray source and the detector assembly move a predetermined distance in the traveling direction relative to the conveying device.