As an interdisciplinary domain,the microwave photonic technology is one of the important development directions of new airborne radar systems and can realize the functions of RF signal processing and high-speed transmission by optical methods that are difficult or even impossible to realize by electronic technology.However,almost all the domestic microwave photonic radar systems developed up to now are only tested for function demonstration,and the system-level validation approach oriented to the practical operational requirements is urgently needed to promote the engineering development of the airborne microwave photonic radar.After the illustration of necessity,an integrated validation system of airborne microwave photonic radar oriented to system-level performance evaluation is proposed,and the key components of the integrated validation system and the performance indices mapping and evaluation method are expounded.The superiority of this integrated validation system is summarized.