Multi-stage nine-grid locating method of spatial information

Abstract

The invention discloses a multi-stage nine-grid locating method of spatial information. Firstly, figure orthophotoquad in the target area is made; basic grid partition for the target area is carried out, and then multi-stage nine-grid is drawn in an overlapped mode in the target area, and is respectively called the basic grid, the first-stage nine-grid, the second-stage nine-grid, the third-stage nine-grid and so forth; the nine-grid takes the basic grid as the initial grid, and multi-stage partition is carried out on the basic grid to form each-stage sub-grid; a multi-stage nine-grid code is composed of each-stage nine-grid code where sub-grids are positioned, and certain geographic element or event spatial location in the target area is determined by a grid code; at last, mutual conversion relationship of nine-grid code and space coordinate is established so as to realize multi-stage nine-grid locating of spatial information. The invention has simple code for representing geographic element or event spatial location, is in accordance with location judgment habit of people, ensures information collection to be more convenient and quicker, greatly improves work efficiency and saves cost.

Description

technical field [0001] The invention relates to a method for positioning, collecting and updating spatial information, in particular to a method for quickly determining the spatial location of geographical elements or events, which belongs to the technical field of spatial information processing. Background technique [0002] At present, there are many spatial information positioning methods, such as GPS positioning, traditional image mapping, 10,000-meter unit sub-grid, spatial information grid positioning, etc. When using these positioning methods to locate geographical elements (such as urban components) or events, There are certain defects. [0003] GPS is a satellite positioning and navigation system that can be positioned by point. Although it makes regional map surveying and mapping a self-contained system, handheld GPS devices are more expensive, and this instrument is easily affected by ground objects (mountains, forests, buildings) when used in the field. And envi...

AI Technical Summary

Problems solved by technology

Quadtree grid division positioning method based on row and column coding. In practical application, the position coding of this grid positioning method is complex, not intuitive, and does not conform to people's habit of distinguishing orientation. In areas without area boundaries or some special forms , this grid positioning method cannot quickly and accurately locate, which makes it difficult to determine the spatial position and easily leads to misjudgment

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