摘要
提出了一种通用的仿真算法实现了现代战斗机载火控雷达RBM,DBS和聚束SAR三种地图测绘功能用于模拟训练。鉴于训练的实时性要求和逼真性仅限于飞行员目视观察,该算法采用近似仿真手段,首先利用小面单元模型计算雷达波束照射范围内的地面场景后向散射系数,并将其映射到距离-方位平面上,然后对映射结果进行阴影、掩叠、噪声等雷达图像特征的融合,最后将融合结果与成像过程中引入的系统传输函数进行卷积得到仿真图像。该算法成功应用于GL Studio仪表仿真软件的二次开发,扩展了GL Studio图像仿真功能。实验结果和软件试用情况表明通过该算法得到的雷达仿真图像能够满足部队模拟训练需求。
A uniform simulation algorithm was presented to realize ground mapping of RBM, DBS and Spotlight SAR for simulated training. Considering the requirement of training real-time and the reality referring to pilot observation, firstly this algorithm adopted the facet model to compute ground RCS and mapped the RCS into range-orientation surface. Then the mapped result was appended to the radar image features, such as shadows, layover and speckles. Finally the appended result was convoluted with the transmission function of imaging system to get the simulated image. This algorithm was applied into to secondary development of GL Studio successfully and improved its image simulation ability. Experimental and probative results show that the radar simulated images obtained by the proposed method are competent for the simulated training in army.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2012年第9期2033-2037,共5页
Journal of System Simulation
