CN115565093A - Quantitative evaluation method and system for air cruise reachable region of maritime aircraft - Google Patents

Quantitative evaluation method and system for air cruise reachable region of maritime aircraft Download PDF

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CN115565093A
CN115565093A CN202211560771.7A CN202211560771A CN115565093A CN 115565093 A CN115565093 A CN 115565093A CN 202211560771 A CN202211560771 A CN 202211560771A CN 115565093 A CN115565093 A CN 115565093A
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cruise
module
route
aircraft
air
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CN115565093B (en
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武芳
陆锡雷
白晶
朱刚浩
董晓岩
孙延泽
甘松华
肖亮希
范希伟
袁少锟
冯松
荀凯鹏
秦可
王会超
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Shanghai Maritime Safety Administration Of People's Republic Of China
Zhongjiaowang Technology Co ltd
China Waterborne Transport Research Institute
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Shanghai Maritime Safety Administration Of People's Republic Of China
Zhongjiaowang Technology Co ltd
China Waterborne Transport Research Institute
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Abstract

The invention relates to a quantitative evaluation method and a system for an air cruise reachable region of a maritime aircraft. The invention is based on longitude and latitude coordinates and height information of the flight position of the marine aircraft, combines the distribution characteristics of the water area and the supervised object in the supervision jurisdiction of the marine aircraft, can realize the space quantitative evaluation of the visible field of single-frame cruising in the air of the marine aircraft, can integrate the ship density, the accident occurrence condition, the water area jurisdiction type and the like of the area to divide the priority level of the area, can automatically count and analyze the air cruising intensity of the marine aircraft in different areas in the selected time, can automatically adjust the cruising task according to the cruising intensity and the difference of the priority level of the area, and reminds the marine management worker to optimize the cruising task in real time.

Description

Quantitative evaluation method and system for air cruise reachable region of maritime aircraft
Technical Field
The invention relates to the technical field of maritime air cruise management, in particular to a quantitative evaluation method and system for an air cruise reachable region of a maritime aircraft.
Background
Maritime cruising is an important measure for maintaining the ocean rights and interests of China, guaranteeing the sailing safety of ships, guaranteeing the safety of important operations and activities on water and monitoring the ocean environment. The airplane has the advantages that the airplane is used as the marine cruising force with the farthest voyage, the widest visual field and the fastest speed, and bears the main work of marine cruising in the middle and far sea areas in China. However, due to the high operating costs and lack of flexibility of the flight path, the aircraft cruise coverage is limited. Meanwhile, with the high-quality development requirement of the government, the cruise guarantee fund is increasingly tense, and the number of air cruise frames cannot be increased. Therefore, aiming at the limited airplane cruising capacity, the aerial cruising visual field of the airplane is quantitatively evaluated, the strength evaluation and the accurate coverage of the area with the strongest cruising demand (such as frequent accidents, the most dense ships and the most important channel) are realized, the cruising quantitative management based on the visual field evaluation is realized, and the method has great significance for developing high-quality cruising supervision under limited funds.
At present, the air cruise management of the airplane mainly comprises three links of cruise plan formulation, cruise task execution and cruise coverage condition evaluation. Cruise planning is empirically based on historical cruise routes in combination with the current year's capital budget. Ten routes are generally determined by a regional cruise law enforcement head team, and a cruise plan is compiled, drawn and published. Due to approval and other reasons, the cruising route is basically fixed and is respectively formed by connecting 4-14 coordinate point pairs with different quantities in series. The cruising frequency of each route is set according to experience by referring to the collision position of the ship in the last year, the illegal sewage discharge time position and other trends. The daily cruise management is to execute the cruise tasks according to the cruise plan, and an air cruise team manager records the flight time of the airplane on each air route, the single cruise mileage, illegal behaviors and treatment measures thereof, and forms a standing book. The cruise coverage condition evaluation is mainly based on numerical static statistics such as total cruise mileage, total cruise frame number, total illegal behavior finding amount and the like based on a machine account, visual evaluation and expression based on space-time position quantification are lacked, an airplane can only be used as a unit, flight time, flight mileage and problem condition finding of a single frame number are inquired, total flight frame number, time and mileage are counted, a spatial target water area cannot be used as a core, cruise frequency in a certain time period of each water area is analyzed, cruise intensity distribution conditions are counted, consistency of cruise intensity distribution, ship density distribution and water accident distribution cannot be analyzed quantitatively, suggestions cannot be provided for optimization of a cruise route, and automatic calculation and task generation cannot be performed according to cruise demand adjustment.
Disclosure of Invention
The invention aims to solve the technical problem of providing a quantitative evaluation method and a quantitative evaluation system for the air cruise reachable region of a marine aircraft.
The invention is realized by the following technical scheme:
a quantitative evaluation method for an air cruise reachable region of a marine aircraft comprises the following steps:
(1) Collecting spatial information of the route, and carrying out spatial marking on the spatial information to form a route track;
(2) Taking the air route track as two-dimensional line space point data, and connecting the flight track point data according to a time sequence to form two-dimensional line data as a flight route layer;
(3) Calculating the visible width corresponding to a single node in the route track by adopting a central projection method;
(4) Establishing a widened buffer area according to the visual width to generate a visual field of the single air route track;
(5) Assigning the serial numbers of the route tracks to corresponding visual fields for a plurality of route tracks;
(6) Converting the vector data of each visible area into grid data with the minimum space unit size;
(7) Superposing and summing the grid data of the visible field within the statistical time range to obtain the cruising frequency of each grid point in the sea area, and obtaining a cruising intensity image layer based on a small-scale grid;
(8) Dividing a water area supervision region by integrating ship density, accident distribution, function types, jurisdiction affiliation and rights and interests types to form a cruise target water area layer; and superposing the cruise target water area layer and the cruise intensity layer, and performing statistical analysis on sea cruising according to the cruise target water area layer to obtain the coverage area proportion, the coverage times and the proportion of various water areas.
Further, the quantitative evaluation method further comprises the following steps:
(9) And displaying the evaluation result in the form of thematic maps and charts.
Further, in the quantitative evaluation method, in the step (1), the route trajectory is a series of coordinates which are linked in time sequence, and the coordinates include longitude, latitude and altitude of the airplane at a certain time.
Further, in the quantitative evaluation method, in the step (2), the two-dimensional line space point data includes a relative altitude and time of the aircraft,
relative height
Figure DEST_PATH_IMAGE001
，
Wherein,
Figure DEST_PATH_IMAGE002
for an aircraft in
Figure DEST_PATH_IMAGE003
The height coordinate of the moment of time,
Figure DEST_PATH_IMAGE004
is the cruising sea area elevation.
Further, in the quantitative evaluation method, in the step (3), the visible width
Figure DEST_PATH_IMAGE005
，
Wherein,
Figure DEST_PATH_IMAGE006
is the focal length of the camera and is,
Figure DEST_PATH_IMAGE007
is a phase ofThe width of the machine-imaging breadth is wide,
Figure DEST_PATH_IMAGE008
for an aircraft in
Figure 800898DEST_PATH_IMAGE003
The relative height of the moment of time,
Figure DEST_PATH_IMAGE009
is composed of
Figure 360318DEST_PATH_IMAGE003
The visible width of the moment.
Further, in the quantitative evaluation method, the step (4) further includes:
a) Calculating the angle of the flight path
Figure DEST_PATH_IMAGE010
，
Wherein,
Figure DEST_PATH_IMAGE011
、
Figure DEST_PATH_IMAGE012
are respectively an airplane
Figure 609290DEST_PATH_IMAGE003
、
Figure DEST_PATH_IMAGE013
The latitude of the moment of time is,
Figure DEST_PATH_IMAGE014
、
Figure DEST_PATH_IMAGE015
are respectively an airplane
Figure 320763DEST_PATH_IMAGE003
、
Figure 637211DEST_PATH_IMAGE013
Of time of dayLongitude;
b) For the starting point of the route track, making a perpendicular line connecting the starting point and the second track point, and respectively taking the end points of half the length of the visible width of the starting point at the two sides of the vertical foot on the perpendicular line as visible field boundary points; for a non-initial point, making a perpendicular line connecting the non-initial point and a previous track point, and respectively taking end points of half length of the visible width of the non-initial point on two sides of a foot on the perpendicular line as visible field boundary points;
c) Computing
Figure 797059DEST_PATH_IMAGE003
Coordinates of the left boundary point of the visual field of time (c)
Figure DEST_PATH_IMAGE016
，
Figure DEST_PATH_IMAGE017
) And coordinates of boundary points on the right side of the visual field (
Figure DEST_PATH_IMAGE018
，
Figure DEST_PATH_IMAGE019
），
Figure DEST_PATH_IMAGE020
，
Figure DEST_PATH_IMAGE021
，
Figure DEST_PATH_IMAGE022
，
Figure DEST_PATH_IMAGE023
，
Wherein,
Figure DEST_PATH_IMAGE024
for an aircraft in
Figure 845743DEST_PATH_IMAGE003
The latitude of the moment of time is,
Figure DEST_PATH_IMAGE025
for an aircraft in
Figure 977385DEST_PATH_IMAGE003
The longitude of the time of day is,
Figure DEST_PATH_IMAGE026
is composed of
Figure 175935DEST_PATH_IMAGE003
The visible width of the moment;
d) And connecting the boundary point on the left side of the visual field and the boundary point on the right side of the visual field according to the time sequence, and connecting the boundary points of the visual field on two sides of the first track point and the boundary points of the visual field on two sides of the last track point to form a closed polygon, namely generating the visual field of the single route track.
A quantitative evaluation system of an air cruise reachable region of a maritime aircraft is used for realizing the quantitative evaluation method, and comprises a cruise route management module, a cruise target management module, a cruise task management module, a cruise visible field analysis module and a cruise coverage evaluation module, wherein,
the cruise line management module is used for comprehensively managing the air cruise lines;
the cruise target management module is used for quantitatively and comprehensively managing a supervision target of air cruise;
the cruise task management module is used for comprehensively managing sources, plans, executions and evaluations of the air cruise tasks;
the cruise visual field analysis module is used for quantitatively counting the actual coverage intensity of the air cruise to the ground;
and the cruise coverage evaluation module is used for comparing the air cruise coverage strength obtained by quantification with a target, analyzing the air cruise work and evaluating comprehensively.
Furthermore, in the quantitative evaluation system, the cruising route management module comprises a cruising route file management module, a cruising route management module, an airplane position information acquisition module and a cruising log management module; the cruise target management module comprises a basic information access module and a cruise target grading and classifying management module; the cruise task management module comprises an annual cruise task maintenance module, a target safety risk early warning and temporary flight plan generation module and a problem finding result recording module.
Further, in the quantitative evaluation system, the basic information access module includes a basic chart management module, a ship AIS position access module, a ship accident information access module and a water dangerous case information recording module.
Further, in the quantitative evaluation system, the cruise visual domain analysis module includes a single-frame cruise visual domain space quantitative analysis module and a single-frame cruise target visual capacity space quantitative analysis module; the cruise coverage evaluation module comprises a cruise total visual field analysis module, a coverage strength evaluation module for a cruise target and a flight log statistic module.
The invention has the advantages and effects that:
according to the quantitative evaluation method and system for the air cruise reachable area of the marine aircraft, provided by the invention, based on the longitude and latitude coordinates and the height information of the flight position of the marine aircraft, the distribution characteristics of the supervision and administration water area and supervision objects are combined, the space quantitative evaluation of the single-cruise visible area in the air of the marine aircraft can be realized, the priority level of the area can be divided by integrating the ship density, the accident occurrence condition, the water area administration type and the like of the area, the air cruise intensity of the marine aircraft in different areas in selected time can be automatically counted and analyzed, the cruise task can be automatically adjusted according to the cruise intensity and the difference of the priority level of the area, and the marine management worker can be reminded of optimizing the cruise task in real time. The method can effectively make up the deficiency of decision making support of the existing maritime air cruise plan, avoid blind cruise, repeated cruise and missed cruise, and better improve the cruise effectiveness.
Drawings
FIG. 1 is a technical route flow chart of a quantitative evaluation method for an air cruise reachable area of a marine aircraft provided by the invention;
FIG. 2 is a schematic diagram showing the calculation of the visible width in embodiment 1 of the quantitative evaluation method provided by the present invention;
FIG. 3 shows a schematic diagram of the computational viewable area of example 1 provided by the present invention;
FIG. 4 shows a schematic overlay of step (7) of example 1 provided by the present invention;
FIG. 5 shows a schematic overlay of step (8) of example 1 provided by the present invention;
FIG. 6 is a table diagram showing the quantitative evaluation results of example 1 provided by the present invention;
fig. 7 shows a pie chart of the quantitative evaluation results of example 1 provided by the present invention.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The invention provides a quantitative evaluation method and a system for quantifying and visualizing a maritime aircraft air cruising reachable region based on space-time position aiming at the evaluation and management of the current maritime aircraft air cruising coverage condition, wherein the method and the system take the space target region and an important cruising target as the core for maritime air cruising, can analyze annual cruising frequency of each water area, count the cruising coverage intensity distribution conditions of various water areas and targets in the jurisdiction, quantitatively analyze the consistency of the cruising intensity distribution, ship density distribution and water accident distribution, provide suggestions for the optimization of cruising routes, and automatically calculate and generate tasks according to the adjustment of cruising requirements.
Fig. 1 shows a technical route flowchart of a quantitative evaluation method for an air cruise reachable domain of a marine aircraft, which comprises the following steps:
(1) And collecting the spatial information of the route, and carrying out spatial marking on the spatial information to form a route track. The course trajectory is a series of chronologically contiguous coordinates (
Figure DEST_PATH_IMAGE027
，
Figure DEST_PATH_IMAGE028
，
Figure DEST_PATH_IMAGE029
) Wherein
Figure 261895DEST_PATH_IMAGE027
、
Figure 328202DEST_PATH_IMAGE028
and
Figure 601052DEST_PATH_IMAGE029
are respectively an airplane
Figure 874514DEST_PATH_IMAGE003
Longitude, latitude, and height (altitude) coordinates of the time of day.
Computer airplane is
Figure 704061DEST_PATH_IMAGE003
Relative height of time of day
Figure DEST_PATH_IMAGE030
，
Wherein,
Figure DEST_PATH_IMAGE031
for an aircraft in
Figure 578869DEST_PATH_IMAGE003
The height coordinate of the moment of time,
Figure DEST_PATH_IMAGE032
is the cruising sea area elevation.
(2) Taking track coordinate sequence data of the course track as two-dimensional line space point data P 0 ，P 1 ，P 2 ，…P n And the attributes of each two-dimensional line space point data comprise the relative height and time of the airplane, and the flight track point data is connected according to the time sequence to form two-dimensional line data as a flight route map layer.
(3) By using the center projection method, as shown in FIG. 2, the visible width corresponding to a single node S in the flight path of the aircraft is calculated
Figure DEST_PATH_IMAGE033
。
Figure DEST_PATH_IMAGE034
，
Wherein,
Figure DEST_PATH_IMAGE035
is the focal length of the camera and is,
Figure DEST_PATH_IMAGE036
the width of the image to be formed by the camera,
Figure DEST_PATH_IMAGE037
for an aircraft in
Figure 783805DEST_PATH_IMAGE003
The relative height of the moment of time,
Figure DEST_PATH_IMAGE038
is composed of
Figure 94963DEST_PATH_IMAGE003
The visible width of the moment.
(4) A widening buffer area is established according to the visual width, and the visual field of the single route track is generated. In particular, as shown in fig. 3.
a) Based on
Figure 646642DEST_PATH_IMAGE003
Time of day and
Figure 687542DEST_PATH_IMAGE013
track coordinates of time and calculating the angle of the air route
Figure DEST_PATH_IMAGE039
。
Figure DEST_PATH_IMAGE040
，
Wherein,
Figure DEST_PATH_IMAGE041
in the form of an arctan function of,
Figure DEST_PATH_IMAGE042
、
Figure DEST_PATH_IMAGE043
are respectively an airplane
Figure 398400DEST_PATH_IMAGE003
、
Figure 39597DEST_PATH_IMAGE013
The latitude of the moment of time is,
Figure DEST_PATH_IMAGE044
、
Figure DEST_PATH_IMAGE045
are respectively an airplane
Figure 240640DEST_PATH_IMAGE003
、
Figure 986312DEST_PATH_IMAGE013
The longitude of the time of day.
b) For institute of diseaseMaking a perpendicular line connecting the starting point and the second track point at the starting point of the route track, and taking the end points of half length of the visible width of the starting point at the two sides of the foot on the perpendicular line as visible field boundary points; and for the non-initial point, making a perpendicular line connecting the non-initial point and the previous track point, and respectively taking the end points of half the length of the visible width of the non-initial point on the two sides of the foot on the perpendicular line as the boundary points of the visible domain. I.e. the visible width of the starting point is
Figure DEST_PATH_IMAGE046
Respectively taking two sides of a foot on a perpendicular line connecting the starting point and the second track point
Figure DEST_PATH_IMAGE047
A length line segment of/2, wherein end points at two ends of the line segment are used as visible domain boundary points of the starting point; a non-starting point (
Figure DEST_PATH_IMAGE048
Track point of time) has a visible width of
Figure DEST_PATH_IMAGE049
Respectively taking the two sides of the foot on the perpendicular line connecting the track point and the previous track point
Figure DEST_PATH_IMAGE050
And 2, taking the end points of the two ends of the line segment as the boundary points of the visual field of the track point.
Figure DEST_PATH_IMAGE051
Is composed of
Figure DEST_PATH_IMAGE052
The visible width of the instant of time,
Figure DEST_PATH_IMAGE053
is that
Figure DEST_PATH_IMAGE054
The visible width of the moment.
c) Computing
Figure 758483DEST_PATH_IMAGE048
Coordinates of the left boundary point of the visual field of time (c)
Figure DEST_PATH_IMAGE055
，
Figure DEST_PATH_IMAGE056
) And coordinates of boundary points on the right side of the visual field (
Figure DEST_PATH_IMAGE057
，
Figure DEST_PATH_IMAGE058
）。
Figure DEST_PATH_IMAGE059
，
Figure DEST_PATH_IMAGE060
，
Figure DEST_PATH_IMAGE061
，
Figure DEST_PATH_IMAGE062
，
Wherein,
Figure DEST_PATH_IMAGE063
is a function of the sine wave and is,
Figure DEST_PATH_IMAGE064
is a function of the cosine of the number of the points,
Figure DEST_PATH_IMAGE065
for an aircraft in
Figure 193968DEST_PATH_IMAGE048
The latitude of the moment of time is,
Figure DEST_PATH_IMAGE066
for an aircraft in
Figure 385653DEST_PATH_IMAGE048
The longitude of the time of day is,
Figure DEST_PATH_IMAGE067
is composed of
Figure DEST_PATH_IMAGE068
The visible width of the moment.
d) Respectively connecting the boundary points on the left side of the visual field according to the time sequence (
Figure DEST_PATH_IMAGE069
，
Figure DEST_PATH_IMAGE070
) And a visual field right boundary point (
Figure DEST_PATH_IMAGE071
，
Figure DEST_PATH_IMAGE072
) And the visible area boundary points on the two sides of the first track point and the visible area boundary points on the two sides of the last track point are respectively connected to form a closed polygon, namely, the visible area of the single course track is generated.
(5) And (4) generating a corresponding visual field for each route track according to the step (4), and assigning the serial number of the route track to the corresponding visual field for the route track.
(6) And selecting the minimum space unit according to the visual experience and actual requirement of the cruise. And taking each visible area as an image layer, and converting the vector data of the visible area into raster data with the minimum space unit size. The grid within the visual field is assigned a value of 1 and the grid outside the visual field is assigned a value of 0.
(7) Setting a statistical time range, such as day, week, ten days, month, season, year and the like, and as shown in fig. 4, overlapping and summing the grid data of the visible field in the statistical time range to obtain the cruising frequency on each grid point in the sea area, so as to obtain a cruising intensity map layer based on the small-scale grid.
(8) As shown in fig. 5, the water area supervision region is divided by integrating ship density, accident distribution, function category, jurisdiction affiliation and rights and interests category to form a cruise target water area map layer; and superposing the cruise target water area layer and the cruise strength layer, and performing statistical analysis on sea area cruise according to the cruise target water area layer to obtain the coverage area proportion, the coverage times and the proportion of various water areas (namely divided water area supervision areas).
(9) And displaying the evaluation result in the form of a thematic map and an icon. Fig. 6 and 7 show a table diagram and a pie chart of the quantitative evaluation results of example 1 according to the present invention.
The quantitative evaluation system for realizing the quantitative evaluation method comprises a cruise route management module, a cruise target management module, a cruise task management module, a cruise visible field analysis module and a cruise coverage evaluation module.
(1) The cruise route management module is used for comprehensive management of the air cruise routes. The cruise management worker can use the cruise route management module to manage historical route files used by the flight, and can form and edit a route plan based on the historical routes and the current year work tasks. The real-time position and the altitude in the flight process can also be integrally displayed through the cruise route management module. The cruise route management module also provides a log management function for the whole process of the past air cruise.
The cruise route management module comprises a cruise route file management module, a cruise route management module, an airplane position information acquisition module and a navigation log management module.
And the cruising route file management module is used for importing coordinate points of the historic cruising routes to complete the initialization of the historic routes, and connecting and accessing new cruising routes generated year by year in real time.
And the cruise route management module is used for accessing historical flight routes in cruise management, accessing data such as current cruise target water area division, ship density, accident distribution and the like in the cruise target management, and adjusting the flight plan by a maritime air cruise management worker according to an analysis result.
The airplane position information acquisition module is used for acquiring the flight space position of the airplane and acquiring the longitude and latitude and the height of the flight position at a certain time interval in the flight process.
And the navigation log management module is used for completing the recording of cruise starting time, cruise ending time, cruise operators, cruise route numbers, case finding and the like of the maritime air cruise.
(2) The cruise target management module is used for quantitative comprehensive management of the supervision target of air cruise. The cruise target management module is accessed to basic information such as basic chart and ship AIS positions, and can classify cruise targets in different water areas and different ground objects according to different supervision requirements.
The cruise target management module comprises a basic information access module and a cruise target classification management module.
The basic information access module comprises a basic chart management module, a ship AIS position access module, a ship accident information access module and a water dangerous case information input module.
And the cruising target classified management module is used for comprehensively dividing the water traffic element distribution condition according to the water area jurisdiction range. The division method of the jurisdiction water area space has three dimensions. And functional attribute dimensionality, namely respectively delineating element ranges such as a navigation channel, an anchor ground, a bridge, a restricted navigation area, an operation area and the like in the water area administered by the direct maritime management institution according to the main routing system of the administration area. The equity dimension is drawn according to the territorial sea base point published in China to form the scope of the inner water, the territorial sea, the adjacent area and the exclusive economic area. And the jurisdiction attribute dimension is used for drawing each branch maritime affair management mechanism, the directly subordinate maritime affair management mechanism and the management triangular domain range according to the jurisdiction range published by each maritime affair bureau. The system combines the dimensions and analyzes according to key water areas (routing planning navigation elements), other water areas of internal water, territories, adjacent areas and exclusive economic areas.
(3) The cruise task management module is used for comprehensively managing sources, plans, execution and evaluation of the air cruise tasks. The comprehensive management of annual cruising, target safety risk early warning-based tasks, temporary flight tasks and the like is specifically realized. The cruise task management module also provides functions of marking in key patrol waters and searching problem result records for the empty patrol management workers.
The cruise task management module comprises an annual cruise task maintenance module, a target safety risk early warning and temporary flight plan generation module, a key patrol water area marking module and a problem finding result recording module.
And the annual cruise task maintenance module is used for accessing a maritime system law enforcement related system, providing a task compiling function and finishing the convergence and unified management of multi-source tasks.
The target safety risk early warning and temporary flight plan generating module is used for accessing basic data of the cruise target management module, can automatically generate cruise tasks according to regional ship density, overwater construction operation activities, the number of key ships such as ship-obstructing fishing nets, dangerous goods carrying ships and the like, accident occurrence conditions and other special tasks, provides cruise plan modification early warning when real-time data exceeds a safety risk early warning threshold value set by a system, sends the cruise plan modification early warning to temporary cruise route management, and reminds a maritime management worker to adjust the cruise tasks in real time.
And the marine information labeling module is used for labeling and maintaining the information discovered and collected in the cruise task execution process. The system comprises the key points concerned by maritime air cruise supervision such as an impassable fishing net, a strategic island reef, a frequently illegal event place, a high-risk ship gathering place, a commercial fishing ship intersection and the like related to maritime navigation environment, navigation order, ship navigation, berthing operation and the like. The collection content mainly comprises water area types, positions, time ranges for key inspection, inspection grades and the like.
And the checking problem result recording module is used for finishing checking the file retention of the case in the cruise task execution. The method comprises the steps of problem condition acquisition, time acquisition, law enforcement personnel, vessel involvement, case type and audio and video information management. The types of the problems to be detected comprise that the AIS is not normally opened, no declaration of maritime liquid cargo transfer, non-anchor anchoring, no declaration of oil supply and oil receiving operation, no declaration of oil and sewage recovery operation, illegal towing, no declaration of hydraulic work, over-the-air region navigation, non-specified route navigation, sludge throwing when the dredging ship is not in a specified water area and the like.
(4) The cruise visual field analysis module is used for quantifying and counting the actual coverage intensity of the air cruise to the ground. The system specifically provides a single-frame cruise visual field space quantitative analysis module and a single-frame cruise target visual capacity space quantitative analysis module.
The cruise visible domain analysis module comprises a single-frame cruise visible domain space quantitative analysis module and a single-frame cruise target visible capacity space quantitative analysis module.
The single-frame cruise visual field space quantitative analysis module is used for accessing airplane position information collection, and based on the maritime airplane air cruise visual field quantitative evaluation method provided by the text, space quantitative evaluation of the maritime airplane air single-frame cruise visual field is achieved through the acquired airplane longitude and latitude and height information, and the covering condition of the single-frame cruise on the cruise target is acquired.
The single-frame cruise target visual capacity space quantitative analysis module is used for accessing single-frame cruise visual field space quantitative analysis results and basic information of the cruise target in flight time to obtain single-frame cruise spatial quantitative analysis results of coverage areas of various waters in the district, ships in various waters, accident coverage percentage and the like.
(5) And the cruise coverage evaluation module is used for comparing the air cruise coverage strength obtained by quantification with a target, analyzing the air cruise work and evaluating comprehensively. The method specifically provides annual (quarterly and monthly) cruise total visual domain analysis, a module for evaluating the coverage strength of cruise targets and flight log statistics.
The cruise coverage evaluation module comprises an annual (quarterly and monthly) cruise total visual field analysis module, a coverage strength evaluation module for the cruise target and a flight log statistic module.
The cruise total visible area analysis module is used for accessing a single-frame visible area space quantitative analysis result and a flight ledger, and acquiring an annual cruise total visible area based on the maritime aircraft air cruise visible area quantitative evaluation method provided by the text.
And the cruise target coverage strength evaluation module is used for counting the coverage areas of various water areas in the district, ships in various water areas, accident coverage percentage and the like according to the distribution condition of the water area targets in the cruise time period, and automatically counting and analyzing the air cruise strength of the regional maritime aircraft in the selected time.
And the flight log counting module is used for basic flight statistics, such as flight times, total flight mileage and total flight duration.
The above examples are only for illustrating the technical solutions of the present invention, and are not intended to limit the scope of the present invention. But all equivalent changes and modifications within the scope of the present invention should be considered as falling within the scope of the present invention.

Claims (10)

1. A quantitative evaluation method for an air cruise reachable region of a maritime aircraft is characterized by comprising the following steps:
(1) Collecting spatial information of the route, and carrying out spatial marking on the spatial information to form a route track;
(2) Taking the route track as two-dimensional line space point data, and connecting the flight track point data according to a time sequence to form two-dimensional line data serving as a flight route layer;
(3) Calculating the visible width corresponding to a single node in the route track by adopting a central projection method;
(4) Establishing a widened buffer area according to the visual width to generate a visual field of the single air route track;
(5) Assigning the serial numbers of the route tracks to corresponding visual fields for a plurality of route tracks;
(6) Converting the vector data of each visible area into grid data with the minimum space unit size;
(7) Superposing and summing the grid data of the visible field within the statistical time range to obtain the cruising frequency of each grid point in the sea area, and obtaining a cruising intensity image layer based on a small-scale grid;
(8) Dividing a water area supervision region by integrating ship density, accident distribution, function types, jurisdiction affiliation and rights and interests types to form a cruise target water area layer; and superposing the cruise target water area layer and the cruise intensity layer, and performing statistical analysis on sea cruising according to the cruise target water area layer to obtain the coverage area proportion, the coverage times and the proportion of various water areas.
2. The quantitative evaluation method of claim 1, further comprising the steps of:
(9) And showing the evaluation result in the form of thematic maps and charts.
3. The quantitative assessment method according to claim 1, wherein in the step (1), the course trajectory is a series of chronologically connected coordinates including longitude, latitude and altitude of the aircraft at a certain time.
4. The quantitative evaluation method of claim 1, wherein in the step (2), the two-dimensional line space point data includes a relative altitude of an aircraft and a time,
relative height
Figure 669770DEST_PATH_IMAGE001
，
Wherein,
Figure 34542DEST_PATH_IMAGE002
for an aircraft in
Figure 466791DEST_PATH_IMAGE003
The height coordinate of the moment of time,
Figure 218978DEST_PATH_IMAGE004
is the cruising sea area elevation.
5. According toThe quantitative evaluation method of claim 1, wherein in the step (3), the visual width is set to be smaller than the threshold value
Figure 634522DEST_PATH_IMAGE005
，
Wherein,
Figure 116450DEST_PATH_IMAGE006
is the focal length of the camera and is,
Figure 468670DEST_PATH_IMAGE007
the width of the image to be formed by the camera,
Figure 36049DEST_PATH_IMAGE008
for an aircraft in
Figure 851689DEST_PATH_IMAGE003
The relative height of the moment of time,
Figure 857298DEST_PATH_IMAGE009
is composed of
Figure 772295DEST_PATH_IMAGE003
The visible width of the moment.
6. The quantitative evaluation method according to claim 1, wherein the step (4) further comprises:
a) Calculating the angle of the flight path
Figure 564321DEST_PATH_IMAGE010
，
Wherein,
Figure 183652DEST_PATH_IMAGE011
、
Figure 309346DEST_PATH_IMAGE012
are respectively an airplane
Figure 129666DEST_PATH_IMAGE013
、
Figure 928427DEST_PATH_IMAGE014
The latitude of the moment of time is,
Figure 820291DEST_PATH_IMAGE015
、
Figure 803421DEST_PATH_IMAGE016
are respectively an airplane
Figure 978663DEST_PATH_IMAGE017
、
Figure 414455DEST_PATH_IMAGE018
The longitude of the time of day;
b) For the starting point of the route track, making a perpendicular line connecting the starting point and the second track point, and respectively taking the end points of half the length of the visible width of the starting point at the two sides of the vertical foot on the perpendicular line as visible field boundary points; for a non-initial point, making a perpendicular line connecting the non-initial point and a previous track point, and respectively taking end points of half length of the visible width of the non-initial point on two sides of a foot on the perpendicular line as visible field boundary points;
c) Calculating out
Figure 785043DEST_PATH_IMAGE013
Coordinates of the left boundary point of the visual field of time (c)
Figure 809631DEST_PATH_IMAGE019
，
Figure 971753DEST_PATH_IMAGE020
) And coordinates of boundary points on the right side of the visual field (
Figure 813283DEST_PATH_IMAGE021
，
Figure 453474DEST_PATH_IMAGE022
），
Figure 19320DEST_PATH_IMAGE023
，
Figure 414661DEST_PATH_IMAGE024
，
Figure 825045DEST_PATH_IMAGE025
，
Figure 859472DEST_PATH_IMAGE026
Wherein,
Figure 796335DEST_PATH_IMAGE027
for an aircraft in
Figure 303190DEST_PATH_IMAGE003
The latitude of the moment of time is,
Figure 794345DEST_PATH_IMAGE028
for an aircraft in
Figure 773409DEST_PATH_IMAGE003
The longitude of the time of day is determined,
Figure 299200DEST_PATH_IMAGE029
is composed of
Figure 567501DEST_PATH_IMAGE003
The visible width of the time;
d) And connecting the boundary point on the left side of the visual field and the boundary point on the right side of the visual field according to the time sequence, and connecting the boundary points of the visual field on two sides of the first track point and the boundary points of the visual field on two sides of the last track point to form a closed polygon, namely generating the visual field of the single route track.
7. A quantitative evaluation system of an air cruise reachable region of a maritime aircraft for realizing the quantitative evaluation method of any one of claims 1 to 6, wherein the quantitative evaluation system comprises a cruise route management module, a cruise target management module, a cruise task management module, a cruise visible field analysis module and a cruise coverage evaluation module,
the cruise line management module is used for comprehensively managing the air cruise lines;
the cruise target management module is used for quantitatively and comprehensively managing a supervision target of air cruise;
the cruise task management module is used for comprehensively managing sources, plans, executions and evaluations of the air cruise tasks;
the cruise visual field analysis module is used for quantitatively counting the actual coverage intensity of the air cruise to the ground;
and the cruise coverage evaluation module is used for comparing the air cruise coverage strength obtained by quantification with a target, analyzing the air cruise work and evaluating comprehensively.
8. The quantitative evaluation system of claim 7, wherein the cruise route management module comprises a cruise route profile management module, a cruise route management module, an airplane position information collection module, and a navigation log management module; the cruise target management module comprises a basic information access module and a cruise target classification management module; the cruise task management module comprises an annual cruise task maintenance module, a target safety risk early warning and temporary flight plan generation module and a problem finding result recording module.
9. The quantitative evaluation system of claim 8, wherein the basic information access module comprises a basic chart management module, a vessel AIS location access module, a vessel accident information access module, and a water danger information entry module.
10. The quantitative evaluation system of claim 7, wherein the cruise visual domain analysis module comprises a single-frame cruise visual domain spatial quantification analysis module and a single-frame cruise target visual capacity spatial quantification analysis module; the cruise coverage evaluation module comprises a cruise total visual field analysis module, a cruise target coverage strength evaluation module and a flight log statistic module.
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