In order to realize the mosaic of C4ISR system construction mode， aiming at the construction of "meta element" data model of the system， driven by the software definition technology， the definable resource modeling principle is discussed， the resource modeling process is put forward， the resource concept is defined， and the resource classification framework based on multi perspectives is established. Around the control of resource information flows and the open sharing of capabilities， the model elements are proposed. According to the characteristics of 7 kinds of resources， the reference models are established. The applicability of the model to software-defined system construction is verified by instantiating the modelling of resources under typical cases.
