Since offset ray parameter is proportional to angle of incidence at the reflector, CAI gathers provide a complete set of tools for migration velocity analysis and AVO analysis.

• 由于照射角和炮检距的对应关系 ；共照射角像集又为偏移速度分析和AVO(振幅随炮检距变化 )分析等提供了有力工具 .