摘要
推导了 L2 最小范数相位解缠法的实用计算公式,应用 L2 最小范数相位解缠递推算法对InSAR图像进行了计算处理,将L2 最小范数相位解缠法的计算结果与 Goldstain枝切法相位解缠法计算结果进行对比分析。结果表明,最小范数相位解缠法具有收敛快、计算结果精度高等优点。经过 6 次递推后,获得与Goldstain枝切法基本相同的结果。最小范数相位解缠法出现残差点较 Goldstain枝切法少,图像较Goldstain枝切法光滑。
A formula of Minimum L^2-norm two dimensional phase unwrapping are derived based on relationship between wrapping and unwrapping phase in this paper. In order to test the correctness and validness of the formula derived, the computed results of Minimum L^2-norm two dimensional phase unwrapping are compared with that by traditional Goldstain’s method. The results manifest that Minimum L^2-norm two dimensional phase unwrapping can get the better results only at the sixth step iterated than that by Goldstain’s method.
出处
《地球科学与环境学报》
CAS
2005年第1期80-83,共4页
Journal of Earth Sciences and Environment
基金
山东省基础地理信息与数字化技术重点实验室开放式基金项目(SD2003 1)
