Ship relative position measuring method, system and equipment and storage medium

The invention provides a ship relative position measuring method, system and device and a storage medium, and relates to the field of marine surveying and mapping. The method comprises the steps that temperature data, salinity data and depth data of a water column at the position where a ship is located are collected through a CTD detector; determining sound velocity profile data based on the temperature data of the water column, the salinity data of the water column and the depth data of the water column; calibrating the multi-beam echo sounding device based on the sound velocity profile data to obtain a calibrated multi-beam echo sounding device; carrying out detection based on the calibrated multi-beam echo sounding device to obtain detection data; acquiring first dynamic data of the ship when the calibrated multi-beam echo sounding device transmits sound waves and second dynamic data of the ship when the calibrated multi-beam echo sounding device receives echo sound waves; calibrating the detection data b