Abstract: The characteristics of the acoustic interference structure in deep-water are of significant importance for the detection and localization of underwater targets. The characteristics of acoustic frequency-range interference patterns in typical deep-water sound zones are analyzed based on ray theory, and the theoretical formulas for calculating interference striations and waveguide invariants in different sound zones are also derived, including the direct arrival zone, shadow zone, convergence zone, deep sound channel, and surface duct. Specifically, leveraging the insensitivity of interference structure in surface duct to source depth, a method for estimating source range is subsequently proposed based on this interference pattern., which requires no prior knowledge of the source depth. The results demonstrate that the interference characteristics in different sound zones depend on the type of received eigenrays and are closely related to the source/receiver depths and ranges, enabling the extraction of source position information. Within the surface duct, the range estimation of near-surface source in the both shadow zone and convergence zone can be achieved by matching the oscillation period of interference pattern. The robustness of this method has been verified by using simulated data.