Methods and systems for determining whether an object is in a liquid-surface-wave-influenced environment

Abstract

Some embodiments of the invention pertain to methods for determining whether an object is in a liquid-surface-wave-influenced environment, such as for example in a ferry. The method comprises: acquiring (s10) measurement data, here referred to as “inertial data”, from an inertial measurement unit (IMU) rigidly mounted with respect to the object; determining (s20) a value, here referred to as “autocorrelation function minimum's lag value”, representing a lag at which an autocorrelation function of the acquired inertial data is minimum; and determining (s30) whether the object is in a liquid-surface-wave-influenced environment based on the autocorrelation function minimum's lag value. The disclosure also relates to, without being limited to, systems (1200), vehicles, computer programs, and computer program products.

Dependencies are inferred from the claim text.