phase unwrapping algorithms

Phase unwrapping algorithms are methods used to reconstruct the true phase of a signal from wrapped data that only shows phase within a limited range (e.g., -π to π). Since true phase can differ by multiples of 2π, unwrapping algorithms identify and add these 2π jumps to produce a smooth, continuous phase map. They analyze the phase differences between neighboring points, detect where jumps occur, and systematically correct these to reveal the underlying actual phase. This process is essential in applications like imaging and radar, where accurate phase information is critical.