合成孔径雷达（SAR)目标成像仿真，数据模型归一化，模态振动，毕业设计有用，添加噪声处理，预报误差法参数辨识-松弛的思想，虚拟力的无线传感网络覆盖，感应双馈发电机系统的仿真。- Synthetic Aperture Radar (SAR) imaging simulation target, Normalized data model, modal vibration, Graduation useful Add noise processing, Prediction Error Method for Parameter Identification- the idea of relaxation, Virtual power wireless sensor network coverage, Simulation of doubly fed induction generator system.