Ship Anchoring Guidance Using Updated Quay Reference Data
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Solution Overview
Problem
Conventional ship navigation assistance systems experience increasing errors in distance measurement during anchoring, leading to inaccuracies in spatial relationships and directional guidance.
Innovation Solution
A ship navigation assistance system incorporating a measurement sensor and a characteristic information updating module, which uses initial characteristic information and real-time measurement data to update and refine the quay line and reference point information, reducing error accumulation through weighting coefficients and averaging processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If distance measurement means is used to measure distance between ship and quay points, then navigation guidance can be provided, but measurement errors accumulate sequentially with each measurement
Solution Approach 1:
The patent implements feedback by continuously measuring the ship's position relative to the quay and updating the navigation guidance information based on these measurements. The system uses the measured position data to correct and refine the guidance instructions, ensuring that accumulated errors are minimized through continuous feedback loops rather than sequential error propagation.
Solution Approach 2:
The patent applies preliminary action by pre-calculating multiple candidate navigation guidance information options before the ship reaches critical positioning points. By preparing advance guidance information based on predicted ship positions and quay characteristics, the system avoids relying solely on sequential measurements that would otherwise accumulate errors.
2Ease of operation
If conventional distance measurement is used for anchoring navigation, then basic guidance can be provided, but spatial relationships and directional guidance become inaccurate
Solution Approach 1:
The patent enhances the measurement system's functionality by integrating multiple measurement capabilities beyond simple distance measurement. The system simultaneously determines ship position, orientation, and spatial relationships with the quay by utilizing multi-functional measurement approaches that provide comprehensive navigation data for accurate spatial guidance.
Data Source
AI summary
The purpose of the present disclosure is to suppress an error which occurs in movement, such as in anchoring a ship. A ship navigation assistance system includes a measurement sensor and a characteristic information updating module. The measurement sensor acquires measurement information on an object using a ranging result of an area including the object that is an anchorage target of a ship. The characteristic information updating module updates characteristic information on the object using initial characteristic information on the object or characteristic information before updating on the object, and the measurement information.