基于计算机图形学的干涉SAR成像几何仿真

Imaging Geometry Simulation of InSAR Based on Computer Graphics

为了提高干涉SAR成像几何经典仿真算法的精度和效率,把计算机图形学引入干涉SAR成像几何仿真中,利用OpenGL图形库和Z缓冲算法来完成目标的阴影区计算,利用像素操作和图形变换法完成目标采样点的插值和坐标计算。最后,利用典型几何体和不同大小场景进行干涉成像几何仿真精度和效率的分析,结果表明该方法具有高精度、高效率的特点。

To enhance the computational efficiency and precision of classical interferometric SAR （InSAR） imaging geometry simulation, computer graphics method was proposed for imaging geometry simulation, the OpenGL graphics library and Z-Buffer algorithm were used to complete the shadow computation, the pixel operation and graphics transform method were used for the sample points interpolation and the coordinates computation. Finally, the canonical object and the scenes with different size were used for the precision and efficiency analysis of the lnSAR imaging geometry simulation. The results show that the method has the characteristics of high precision and good efficiency.