Research on Phase Unwrapping Based on Improved Ant Colony Algorithm

Abstract

Phase unwrapping is a key step in data processing of interferometric SAR. The key to the traditional entanglement method is the establishment of branch tangents. The shorter the length of the tangential line, the better the untangling effect. Under the idea that the business travel problem (TSP) solves the shortest path, the ant colony algorithm and the particle swarm algorithm are proposed. Based on the two algorithms, the cluster analysis method can be introduced to establish a shorter branch tangent than the traditional unwrapping method, to avoid the “island effect” in the process of untangling. The feasibility and effectiveness of the method are verified by simulation.