首先,测量建筑物叠掩量,反演出建筑物高度初值;然后,在相邻建筑物下垫面粗糙度相关的假设下,对重组后的电磁散射模型进行基于拟模拟退火的参数解算,实现了模型中未知参数的求解以及建筑物高度的反演。将此方法应用于真实Radarsat-2SAR场景中3座建筑物高度的反演,取得了反演高度相对误差均小于10%的结果。
In order to expand the applicable scope of electromagnetic model, a new approach was proposed after recombining unknown parameters about building and ground in this mod- el. The new calculation process was consisted of two steps: initial building height firstly es- timated by layover measurement of building roof, and then building height refined by electro- magnetic model which was resolved in the system of simulated annealing. To validate this method, heights of three buildings were retrieved from a Radarsat-2 image with 3-meters resolution. The results show that the relative error of building height retrieval is less than 10 % in the experiment data.