A Method for Dividing the Search Area of Equal Radius Circles
A search area and equal radius technology, which is applied to the division of search areas in sea areas, and the division of search areas for air disaster and maritime search and rescue.
Active Publication Date: 2018-07-31
张涉应
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[0003] At present, search methods such as fan-shaped search method, expanded square search method, track line search method, and traverse line search method are mainly used in the search situation of one search or a single search rendezvous point (only one airport or one search transit place). Adaptive search methods for different search areas can improve the search efficiency; the global optimization model of the three-dimensional maritime search and the subdivision algorithm of the maritime search area are suitable for the situation where the targets are evenly distributed in the search area, and can well allocate the The search and rescue force searches the search area, but does not consider the search area division of multiple search assembly points; the full-coverage path planning method adopts the idea of from surface to point, from the whole to the part and then to the whole, which is suitable for optimizing a single search assembly Point search path and calculation of optimal search time
[0004] There are many models and methods for maritime search and rescue, but they are all based on the search method of a single search assembly point
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[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar objects throughout. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be construed as limiting the present invention.
[0024] For the search area of MH370, the division steps are as follows:
[0025] Select the airport around the search area as the search assembly point;
[0026] Taking these search gathering points as the center, R x Is the radius, make a circle of equal radius {⊙ 1 ,⊙ 2 ,⊙ 3 …⊙ n }; With R x The increase of equal radius circle {⊙ 1 ,⊙ 2 ,⊙ 3 …⊙ n }'S coverage
[0027]
[0028] It also gradually increases, when the search area is completely covered by a circle of equal radius, namely
[0029]
[0030] The coverage at this time is the smallest coverage...
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The invention provides a searching region dividing method for constant radius circles. The method comprises: according to a searching region and a positional relationship of a search gathering point, by constructing minimum searching circle coverage, determining a radius of a searching circle; and according to division of the circle by a common string composed of intersections of various circles and a principle of search distance closest attribution, determining the searching area of various search gathering points. The method, based on a geometric method of constant radius circles, improves region dividing efficiency and provides a dividing method for searching area attribution for maritime search and rescue.
Description
Technical field [0001] The present invention relates to the division of search areas, especially the division of search areas in sea areas, and in particular to the division of search areas in air crash and maritime search and rescue. Background technique [0002] The locations of shipwrecks and air crashes are uncertain. For air crashes in open seas and high seas areas, joint search and rescue by multiple countries is often required. Time is tight and tasks are heavy. Due to the limited satellite resolution, and the effect of night use is not good. Therefore, how to determine the search area of surrounding search and rescue points in a timely manner for joint search and rescue of multiple search assembly points (there are multiple airports or multiple search transfer locations) in public areas is particularly important. [0003] At present, search methods such as sector search method, expanded square search method, track line search method, and traverse line search method are m...
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IPC IPC(8): G06F17/50
Inventor 张涉应文政
Owner 张涉应