A method for measuring the bearing and distance between a ship and other objects

By establishing a data filtering mechanism that links time and space, the problem of inconsistency between angle and distance information in traditional measurement methods is solved, enabling more stable orientation and distance measurement and improving the accuracy and reliability of measurement results.

CN122448151APending Publication Date: 2026-07-24HANGZHOU YAGENA TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU YAGENA TECH CO LTD
Filing Date
2026-04-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional methods for measuring the bearing and distance between a ship and other targets lack a unified data association mechanism, resulting in insufficient temporal consistency of angle and distance information during generation. This can easily lead to data mismatch and accumulated errors, especially when the ship's attitude changes or environmental interference causes measurement results to be unstable.

Method used

By acquiring longitude, latitude, and timestamp values, verifying time correspondences and filtering out inconsistent data, combining radar echo positions with electronic azimuth line directions for angle matching, identifying the overlap between rangefinder positions and echoes, and using time and spatial correlation for distance verification, a unified azimuth and distance fusion mechanism is constructed to eliminate abnormal data and ensure the consistency and stability of measurement results.

Benefits of technology

It improves the stability of the measurement benchmark, enhances the consistency of direction determination, reduces the impact of environmental interference on the measurement, and improves the stability and reliability of the measurement results.

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Abstract

The present application relates to the technical field of azimuth measurement, in particular to a method for measuring the azimuth and distance between a ship and other objects, comprising the following steps: obtaining latitude, longitude, time and heading and checking the matching, combining echo and azimuth line to screen superimposed heading, matching distance mark circle and range screening, fusing direction distance correlation screening, checking consistency and removing abnormalities. In the present application, by establishing time correlation and consistency constraints of multi-source navigation elements, latitude, longitude and heading are formed into a unified reference and abnormality is removed, the stability of the measurement reference is improved, deviation identification and screening are carried out in combination with the relationship between echo direction and angle, the consistent performance of direction determination is enhanced, distance verification is carried out using spatial relationship and range information and time matching constraints are introduced, the influence of interference is reduced, a unified relationship is constructed in the fusion stage of azimuth and distance and consistency comparison is carried out, the measurement stability and data fusion reliability in differentiating environment are improved through sequential continuity identification and abnormality filtering.
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