Ship Typhoon Circle Detection Using Azimuth and Quadrant Radii
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Solution Overview
Problem
Current methods for determining whether a ship enters a typhoon circle rely on broadcasted information from the typhoon joint warning center, which may have timing errors and do not account for the asymmetrical radius of typhoon influence during movement, leading to inaccurate assessments.
Innovation Solution
A method and device that acquire typhoon trajectory information and ship position data within a preset time period, process this data to generate azimuth and relative distance information, and compare it with typhoon wind circle radii to determine if the ship is within the typhoon circle, providing accurate and timely warnings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If broadcast information from the typhoon joint warning center is used to determine ship's position relative to typhoon, then the system is simple to operate, but the timing accuracy deteriorates due to timer errors in broadcast
Solution Approach 1:
The system enables ships to independently calculate their own position relative to the typhoon by processing broadcast data locally, rather than relying on the warning center to perform this calculation. The ship's receiver autonomously acquires broadcast information, extracts typhoon center position and ship position, computes azimuth and distance, and determines whether the ship is within the typhoon circle, thereby eliminating timing errors associated with centralized processing
Solution Approach 2:
The system pre-calculates and stores typhoon trajectory information including wind circle radius data before ships need to determine their position. By having this information prepared in advance and making it available for immediate processing, the system reduces timing delays while maintaining operational simplicity
2Device complexity
If a fixed typhoon circle radius is used for all directions, then the calculation is simple, but the accuracy deteriorates because the typhoon influence radius is asymmetrical during movement
Solution Approach 1:
The system applies different wind circle radius values for different quadrants (directions) relative to the typhoon center. Instead of using a single fixed radius, the system determines which quadrant the ship is in and applies the appropriate radius value from the set of four quadrant-specific radii, accurately reflecting the asymmetrical nature of typhoon influence during movement
Solution Approach 2:
The system assigns different radius characteristics to different spatial regions (quadrants) around the typhoon center. Each quadrant has its own specific radius value that reflects the local wind influence characteristics in that direction, allowing the system to adapt the calculation to the specific local conditions rather than applying a uniform global parameter
Data Source
AI summary
A method and device are disclosed for determining whether a ship enters a typhoon circle, an electronic equipment and a computer readable medium. The method includes acquiring a typhoon trajectory information set in a preset time period, obtaining a ship position information set in a preset time period, performing data processing on each piece of typhoon trajectory information and each piece of ship information set, determining wind circle radius information corresponding to the azimuth information according to the azimuth information and the typhoon wind circle radius information, performing data processing on each piece of typhoon trajectory information and each piece of ship position information to generate a relative distance and obtain a relative distance set, and comparing each relative distance in the relative distance set with the circle radius information to generate comparison information and obtain a comparison information set. The typhoon trajectory information includes typhoon wind circle radius information.