Hierarchical Earth Surface Addressing for Concise Precise Location Codes
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Solution Overview
Problem
Existing location expression systems, such as the Three-Word Global Address System, face challenges in providing concise and accurate location information, especially when higher precision is required, leading to potential misunderstandings due to similar pronunciations and inefficiencies in expressing larger areas.
Innovation Solution
A multi-level combination expression method that divides the Earth's surface into multiple area blocks along longitude and latitude directions, using unique character or word sets to represent each level, ensuring precise and concise location expression without misunderstandings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the Three-Word System divides Earth into 3m×3m regions represented by three unique words, then location precision is improved, but expression length increases and misunderstandings occur due to similar pronunciations
Solution Approach 1:
The patent segments the Earth's surface into a hierarchical grid system with multiple levels (first level to eighth level), where each level divides regions into smaller blocks. This segmentation allows representation of different precision requirements at appropriate granularity, avoiding the need to always use the finest 3m×3m division, thus reducing expression length while maintaining necessary precision.
Solution Approach 2:
The patent introduces a hierarchical dimension to the location system, organizing space not just by size but by levels (1st level to 8th level). Each level has its own character set, enabling compact representation by selecting only the necessary level for the given precision requirement, rather than always using the maximum detail level.
2Measurement precision
If the Three-Word System uses tens of thousands of words for 3m×3m regions, then location precision is improved, but the system becomes complex and difficult to operate
Solution Approach 1:
The patent segments the character set into multiple level-specific sets (first level character set to eighth level character set), where each set contains a manageable number of characters appropriate for that level's precision requirements. This avoids the need for a single large character set of tens of thousands of words, making the system easier to operate.
Solution Approach 2:
Different levels of the hierarchy use different character sets tailored to their specific precision requirements. Lower levels (coarser granularity) use smaller character sets, while higher levels (finer granularity) use larger character sets. This local optimization makes the system more usable by matching character set size to actual precision needs.
3Area of stationary object
If the Three-Word System expresses larger areas, then coverage is improved, but expression conciseness deteriorates and adjacent areas cause misunderstandings
Solution Approach 1:
The patent makes the location expression dynamic by allowing selection of different hierarchical levels based on the actual precision requirements of the scenario. For larger areas, coarser levels (1st-4th level) provide concise expressions, while for smaller areas, finer levels (5th-8th level) provide necessary precision. This dynamic adaptation avoids unnecessary detail in expressions for large areas.
Solution Approach 2:
The hierarchical segmentation allows the system to express large areas using only the necessary upper levels without forcing inclusion of all lower level details. This selective segmentation maintains conciseness while providing the ability to drill down to finer precision when needed.
4Measurement precision
If higher precision levels are provided, then measurement precision is improved, but the number of characters and words required increases
Solution Approach 1:
The patent segments the character resources into level-specific sets, where each level has its own dedicated character set. This segmentation allows the system to use only the character resources necessary for the required precision level, rather than always consuming resources from the full set available at the finest level.
Solution Approach 2:
The patent changes the parameter of character set size according to the precision level required. Each hierarchical level has a different character set size optimized for that level's precision requirements, allowing the system to adjust resource consumption to match actual needs rather than always using the maximum character set.
Data Source
AI summary
A multi-level combination expression method and system for locating area positions on Earth's surface are provided. The method comprises: dividing Earth's surface into a plurality of area blocks along longitude and latitude directions, to form a plurality of levels based on area of the plurality of area blocks from large to small; representing each level of the plurality of levels by two characters or words, with a first character or word representing a center point position of an area block of the plurality of area blocks in a longitude direction, and a second character or word representing a center point position of the area block in a latitude direction; and expressing a position of the area block on the Earth's surface by utilizing a multi-level combination method and a longitude latitude cross positioning method.