phase unwrapping

Phase unwrapping is a technique used to resolve ambiguities in phase measurements, often found in fields like signal processing and imaging. When a signal's phase exceeds a certain range (like going from 360 degrees back to 0 degrees), it can create confusion about its actual value. Phase unwrapping involves analyzing the data to determine the correct continuous phase by adding or subtracting full cycles where necessary. This process clarifies the true position or state of a signal, allowing for accurate interpretation and analysis, especially in applications such as radar, optics, and medical imaging.