CN115099507A - A positioning method for safe maritime location selection under complex and multi-factor conditions - Google Patents

Abstract

The invention discloses a method for positioning marine safe site selection under a complex multi-factor condition, which relates to the technical field of marine planning site selection, in particular to a method for positioning marine safe site selection under a complex multi-factor condition, and comprises the following steps: collecting all information influencing marine safe addressing, carrying out digital processing, dividing all information needing to be avoided into point information, linear information and planar information, carrying out digital fusion processing on the point information, the linear information and the planar information in the same coordinate system, converting all the digitalized point information and the digitalized linear information into planar information areas, and then classifying the information processed into the planar areas into an area Li layer in which the safe addressing is required and an area Lo layer in which the safe addressing cannot be selected; and positioning the available area meeting the site selection condition, respectively solving intersection and union of all Li image layers and Lo image layers, and finally solving a complementary set to obtain the available water area meeting the safe site selection condition.

Description

A positioning method for safe maritime location selection under complex and multi-factor conditions

technical field

The invention relates to the technical field of maritime planning and site selection, in particular to a positioning method for maritime safety site selection under complex and multi-factor conditions.

Background technique

At present, there are many sea-using departments involved in the selection of maritime safety sites in my country, including the competent marine departments (marine functional zoning, etc.), the competent transportation departments (such as ports, waterways, shipping routes, anchorages, etc.), agricultural Departments (fishing ports, aquaculture areas, etc.), power and energy departments (sea use for offshore wind power development, oil and gas development, etc.), ecological environmental protection departments (ecological environmental protection areas, etc.) and other sea-related departments, any department is conducting The sea use needs of other departments must be taken into account in the selection or planning of sea use for offshore projects.

Nowadays, with the increase of marine development and utilization, there are more and more restrictive factors in the safe location selection of various sea-use projects in the future, and the restrictive conditions are more and more complicated. Safe siting for the constraints of various factors, not to mention the available siting areas that meet the constraints of the above-mentioned constraints.

Most of the existing positioning methods for maritime safety site selection rely on their own site selection experience, combined with geographic data collected based on detection, and integrate the above geographic information data through technical means to conduct safe site selection in the sea area. The area is relatively rough, it is impossible to accurately locate the location of maritime safety, and it is restricted by various sea-use projects. When selecting a site, various restrictive factors must be considered. Site selection is more difficult.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a positioning method for maritime safety site selection under complex and multi-factor conditions, so as to solve the existing positioning methods for maritime safety site selection proposed in the above-mentioned background technology, most of them rely on their own site selection experience, and Combined with the geographic data collected according to the detection, the above-mentioned geographic information data are integrated through technical means to carry out safe site selection in the sea area. Project limitations, when selecting a site, various limiting factors need to be considered. With the continuous increase of sea-use projects, it is more difficult to select and locate offshore sites.

In order to achieve the above object, the present invention provides the following technical solutions: a positioning method for maritime safety site selection under complex multi-factor conditions, comprising the following steps:

Step 1. Collect and digitize all information that affects maritime security site selection:

Step 2. Divide all the information that needs to be avoided in step 1 into point information, line information and plane information;

Step 3, digitally fuse the point-like information, line-like information and plane-like information in step 2 under the same coordinate system;

Step 4. Convert all the digitized point-like information and line-like information into a plane-like information area;

(1) For the point-like information that needs to be avoided safely, a buffer zone is generated with the position of the point as the center and the safe avoidance distance as the radius, which is the area for the point-like information to be avoided safely;

(2) For the linear information that needs to be avoided safely, a buffer zone is generated with the center line as the benchmark and the radius of the safety avoidance distance and half of its own width as the radius, which is the linear information safety avoidance area;

(3) For the planar information requiring safe avoidance, a buffer zone is generated outside the target with the boundary line of the planar target as the benchmark and the safe avoidance distance as the radius, and the area enclosed by the target boundary is combined as the planar information safe avoidance area;

(4) The area information that needs to be included in the safe location selection, and the area enclosed by the target boundary is directly used as the area information.

Step 5. Categorize the information processed as planar areas in step 4: one is the area where the safe location must be located, that is, the Li layer, and the other is the area where the safe location cannot be located, that is Lo layer;

Step 6. Locate the available area that meets the site selection conditions.

Further, in the step 1, all restrictive factors affecting the safe location of the sea are considered, including geographic map information of various types and sources such as vectors and grids.

Further, in the steps 2-4, all the restrictive factors affecting the maritime safety site selection are all converted into identifiable vector planar information areas.

Further, in the step 5, the intersection and union of all Li layers and Lo layers are obtained respectively, and finally the complement sets are obtained to obtain the available water area that meets the conditions for safe location selection.

Further, the intersection of all Li _i layers is obtained, that is, Li=Li ₁ ∩Li ₂ ∩...Li _i ; the union of all Lo _i layers is obtained, that is, Lo=Lo ₁ ∪Lo ₂ ∪... .Lo _i .

L即为满足安全选址要求的可用区域。Further, the area inside the layer Li and outside the layer Lo is the complement set

L is the available area that meets the security site selection requirements.

Compared with the prior art, the beneficial effect of the present invention is that: the positioning method for maritime safety site selection under complex multi-factor conditions will process various complex restrictive conditions affecting maritime safety site selection according to a unified coordinate system, thereby realizing Observe and analyze various restrictive conditions in a GIS window, complete the regional classification of restrictive conditions, and propose a mathematical model for locating maritime safety site selection. Through the mathematical operation of the regional layer, the available safety conditions that meet various complex and multi-factor conditions can be automatically generated. The site selection area finally forms a method for locating the maritime safety site selection under complex and multi-factor conditions, which significantly improves the efficiency, systematicness and rationality of locating the maritime safety site selection.

1. the present invention, including but not limited to port map, channel map, route map, AIS traffic flow track map, nautical map (water depth, obstructions, reefs, shoals, etc.), fishery aquaculture area, in the collection information in step 1, Drilling platform area, marine function area, ecological protection red line, typhoon path, flow field, wave field, etc., are the information that needs to be considered when locating the safe location at sea.

2. In the present invention, the point-like information that needs to be avoided safely, takes the position of the point as the center and the safe avoidance distance as the radius to generate a buffer zone, which is the area where the point-like information is safely avoided, such as extracting obstructions, reefs, drilling platforms, etc. digitize the position of the data into point-like information; for linear information requiring safe avoidance, a buffer zone is generated with the center line as the benchmark and the safe avoidance distance and half of its own width as the radius, which is the safe avoidance area for linear information, for example, extracting the channel, The centerlines of air routes, traffic flow, typhoons, etc. are digitized into linear information; for surface information that requires safe avoidance, a buffer zone is generated outside the target with the boundary line of the surface target as the benchmark and the safe avoidance distance as the radius, together with the target boundary The enclosed area is merged as a safe avoidance area for planar information. For example, the water depth area, functional area, flow field area, and wave field area that meet the conditions are extracted directly as planar information. Through this step, the above-mentioned information can be displayed in the same GIS window. All kinds of information, and have the conditions for retrieving information attributes, and make preparations for the next step of regional classification.

2. In the present invention, all the information that has been processed as a planar area is divided into two categories, one is the area in which the safe site selection must be, such as the water depth area, flow field area, wave field area, Functional area and other areas, this type of area is represented by Li _i ; the other type is the area that cannot be located in it, that is, the area that cannot be intersected with it, such as the previously generated obstructions, drilling platforms and routes, waterways, etc. The point-like and line-like buffers of , this type of area is represented by Lo _i . Through this step, it is possible to perform the intersection, union and complement operations of region layers in the next step.

Description of drawings

FIG. 1 is a flow chart of a positioning method for maritime safety site selection under complex and multi-factor conditions of the present invention.

Detailed ways

In the description of the present invention, unless otherwise stated, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer" The orientation or positional relationship indicated by , "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, not An indication or implication that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, is not to be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. Ground connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in Figure 1, the present invention provides a technical solution: a positioning method for safe maritime site selection under complex multi-factor conditions, comprising the following steps:

Step 1. Collect and digitize all information that affects maritime security site selection:

Step 2. Divide all the information that needs to be avoided in step 1 into point information, line information and plane information;

Step 3, digitally fuse the point-like information, line-like information and plane-like information in step 2 under the same coordinate system;

Step 4. Convert all the digitized point-like information and line-like information into a plane-like information area;

(1) For the point-like information that needs to be avoided safely, a buffer zone is generated with the position of the point as the center and the safe avoidance distance as the radius, which is the area for the point-like information to be avoided safely;

(2) For the linear information that needs to be avoided safely, a buffer zone is generated with the center line as the benchmark and the radius of the safety avoidance distance and half of its own width as the radius, which is the linear information safety avoidance area;

(3) For the planar information requiring safe avoidance, a buffer zone is generated outside the target with the boundary line of the planar target as the benchmark and the safe avoidance distance as the radius, and the area enclosed by the target boundary is combined as the planar information safe avoidance area;

(4) The area information that needs to be included in the safe location selection, and the area enclosed by the target boundary is directly used as the area information.

Step 5. Categorize the information processed as planar areas in step 4: one is the area where the safe location must be located, that is, the Li layer, and the other is the area where the safe location cannot be located, that is Lo layer;

Step 6. Locate the available area that meets the site selection conditions.

In step 1, consider all the restrictive factors that affect the safe site selection at sea, including geographic map information of various types and sources such as vector and raster.

In steps 2-4, all the restrictive factors affecting the safe location at sea are converted into identifiable vector area information areas.

In step 5, the intersection and union of all Li layers and Lo layers are calculated respectively, and finally the complement sets are obtained to obtain the available water areas that meet the safe location conditions.

The intersection of all Li _i layers is obtained, that is, Li=Li ₁ ∩Li ₂ ∩...Li _i ; the union of all Lo _i layers, that is, Lo=Lo ₁ ∪Lo ₂ ∪...Lo _i .

L即为满足安全选址要求的可用区域。The area inside the layer Li and outside the Lo layer, that is, the complement set

L is the available area that meets the security site selection requirements.

结果为在图层Li里面且在Lo图层外面的区域，即满足选址条件的可用区域，即可实施海上安全选址的快速定位，保证定位位置的安全准确。To sum up, when using this positioning method for maritime safety site selection under complex and multi-factor conditions, the staff first collects all the information affecting maritime safety site selection in advance, such as ship traffic flow, ship route, marine functional zoning, port planning and Information such as sea charts and other information, and then fuse all relevant information under the same coordinate system. After merging the aforementioned factors, the constraints of different sources, different types, and different scales are displayed on the same GIS platform. It lays an important foundation for the subsequent model calculation, and then converts all the digitized point and line information into a plane information area, and takes the point location as the center and the safe avoidance distance as the radius for the point information that needs to be avoided safely. The buffer area is generated, which is the area where point-like information is safely avoided. The linear information that needs to be avoided safely is generated based on the center line, with the safety avoidance distance and half of its own width as the radius to generate a buffer area, which is the linear information safety avoidance area. , the surface information that needs to be avoided safely, take the boundary line of the surface target as the benchmark and the safety avoidance distance as the radius to generate a buffer area outside the target, and combine the area enclosed by the target boundary as the surface information safety avoidance area, such as , the limiting factors such as route avoidance, water depth limitation, functional area exclusion and obstacle avoidance are all converted into area limitation factors through boundary identification and buffer zone, and then the area classification is carried out, and all the aforementioned information that has been processed as a planar area is divided into Two categories: the first category is the area in which the safe site selection must be located, such as the water depth area that meets the site selection conditions; the second category is the area that cannot be located in it, that is, the area that cannot have an intersection with it, such as the previously generated area. The restricted areas such as route avoidance, functional area exclusion, and obstacle avoidance are located in the available areas that meet the site selection conditions, and the intersection operation is performed on all the first type area layers, and the result is Li; The layer performs the union operation, and the result is Lo; finally, the complement is obtained

The result is that the area inside the layer Li and outside the layer Lo, that is, the available area that meets the site selection conditions, can be quickly positioned for maritime safety site selection to ensure the safety and accuracy of the positioning position.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, without departing from the spirit and essence of the present invention, various modifications and improvements can be made, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (6)

1. A method for positioning marine safe site selection under complex multi-factor conditions is characterized by comprising the following steps:

step 1, collecting all information influencing marine safe site selection, and carrying out digital processing:

step 2, dividing all information needing to be avoided in the step 1 into point information, linear information and surface information;

step 3, performing digital fusion processing on the point information, the linear information and the planar information in the step 2 under the same coordinate system;

step 4, converting all the digitalized point information and linear information into a planar information area;

(1) the method comprises the steps that point information needing safe avoidance is used as a buffer area which is an area for safe avoidance of the point information and takes the position of a point as a center and the safe avoidance distance as a radius;

(2) generating a buffer area by taking the central line as a reference and the safety avoidance distance and half of the width of the linear information as a radius, wherein the linear information needing safety avoidance is a linear information safety avoidance area;

(3) generating a buffer area outside the planar target by taking a boundary line of the planar target as a reference and a safety avoidance distance as a radius, and combining the area surrounded by the boundary of the target and the buffer area as a planar information safety avoidance area;

(4) the safety addressing requires the planar information contained therein, and the region surrounded by the target boundary is directly used as the planar information.

And 5, classifying the information processed into the planar area in the step 4: one is the area in which the safe addressing must be located, namely Li layer, and the other is the area in which the safe addressing cannot be located, namely Lo layer;

and 6, positioning the available area meeting the site selection condition.

2. The method for positioning offshore safe siting under complex multifactorial conditions according to claim 1, wherein: in the step 1, all limiting condition factors influencing marine safety site selection are considered, including various types and various sources of geographic map information such as vectors and grids.

3. The method for positioning offshore safe siting under complex multifactorial conditions according to claim 1, wherein: in the step 2-4, all limiting condition factors influencing marine safe site selection are converted into vector surface-shaped information areas which can be identified.

4. The method for positioning offshore safe siting under complex multifactorial conditions according to claim 1, wherein: in the step 5, intersection and union are respectively obtained for all Li image layers and Lo image layers, and finally, a complementary set is obtained to obtain an available water area meeting the safe site selection condition.

5. The method for positioning offshore safe siting under complex multifactor conditions according to claim 4, characterized in that: all of Li _i Intersecting the layers, i.e. Li ═ Li ₁ ∩Li ₂ ∩...Li _i (ii) a All Lo _i Layer union, i.e. Lo ═ Lo ₁ ∪Lo ₂ ∪...Lo _i 。

6. The method for positioning offshore safe siting under complex multifactorial conditions according to claim 5, wherein: the region inside the layer Li and outside the Lo layer, i.e. the complementary set

And L is an available area meeting the requirement of safe address selection.

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