InSAR组合基线估计方法研究

STUDY ON METHOD OF InSAR COMBINED BASELINE ESTIMATION

在分析基线误差对定位和形变探测精度影响的基础上,阐明了基线估计在InSAR处理环节中的重要性。通过对3种经典基线估计方法的比较及组合试验,研究了一种精度较高的组合基线估计方法及流程,并定量研究了偏斜角对基线估计精度的影响。最后,通过对比分析不同基线组合方法生成的干涉条纹图及样本点高程值,验证了该组合基线估计方法的正确性及可行性。

On the basis of analyzing the relations between positioning and deformation measuring accuracies and baseline error, the importance of baseline estimation was pointed. By comparing and combining three classical baseline estimation methods, a new baseline estimation method and its flow were proposed, and the estimation ac- curacy affected by squint angle also was researched quantitatively. Finally, by comparing and analyzing the inter- ferograms and sample altitudes generated with different baseline combination methods, the correcness and feasibility of the proposed baseline estimation method are validated.