Systems and methods path asymmetry correction for precise time transfer and ranging systems

Abstract

Provided herein are systems and methods for synchronizing clocks and determining a range distance between two clocks using one or more timing signals that are communicated between the clocks. The determination can be made to also account for movement between the clocks such as if the clocks are converging (i.e., the distance between them is decreasing over time) or diverging (i., the distance between the clocks is increasing over time.) The systems and methods can utilize timing signals transmitted between two clocks that are synchronizing with another using the precision time protocol. In order to account for the increasing or decreasing distance between the clocks, the systems and methods can utilize Doppler shift data taken between the clocks to apply a correction factor to the timing signals. The timing signals and correction factor can be utilized to also determine a range distance between the clocks.