CN106895850B - Situation display method supporting multi-source target screening - Google Patents
Situation display method supporting multi-source target screening Download PDFInfo
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- CN106895850B CN106895850B CN201611259395.2A CN201611259395A CN106895850B CN 106895850 B CN106895850 B CN 106895850B CN 201611259395 A CN201611259395 A CN 201611259395A CN 106895850 B CN106895850 B CN 106895850B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C23/00—Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/04—Display arrangements
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G3/00—Traffic control systems for marine craft
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- General Physics & Mathematics (AREA)
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Abstract
The invention relates to a situation display method supporting multi-source target screening, which is technically characterized in that: the method comprises the following steps: step 1, initializing a network thread and an interface thread; step 2, creating a target data structure; and 3, processing the network thread data and displaying the interface thread data. The invention provides superposition and difference information display for the user on the basis of providing the radar and AIS equipment output information for the user, and assists navigation personnel to make decisions.
Description
Technical Field
The invention belongs to the technical field of navigation operation, and particularly relates to a situation display method supporting multi-source target screening.
Background
Radar, AIS equipment are used for providing target information around for marine navigation personnel, and supplementary navigation personnel judge the target to guarantee navigation operation safety. Because the principle forms of the radar and the AIS equipment are different, target observation results output by the radar and the AIS equipment are different, sailing personnel not only care about respective output information and superposition information of each equipment, but also have very important significance for the sailing personnel according to difference information between the equipment, and particularly, the difference information has great instructive significance in the battle sailing process.
Navigation operation equipment such as a chart plotting table and an electronic chart realizes the tracking and display of real-time target information by receiving radar and AIS target information.
Currently, the display of real-time target information is mainly divided into two methods: listing in a list form, and visually displaying basic information such as a target name, attributes, course, navigational speed and the like for a user through characters; the other is graphical display, which enables the user to more vividly feel the attributes of the object, the direction and distance from the user, and the like.
The navigation operation equipment generally applies the two methods to respectively display the output information of the radar or AIS equipment, and part of the navigation operation equipment considers the superposed information display of the two methods, but no difference display method is provided, so that the user requirements cannot be met to the maximum extent.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the situation display method which is reasonable in design, convenient and practical and can meet the user requirements to the maximum extent and supports multi-source target screening.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a situation display method supporting multi-source target screening comprises the following steps:
step 1, initializing a network thread and an interface thread;
step 2, creating a target data structure;
and 3, processing the network thread data and displaying the interface thread data.
Further, the specific steps of step 1 include:
(1) creating a network thread;
(2) creating an interface thread;
(3) correlating the signal slot relation between the interface thread and the network thread, when the network thread receives and processes the data, sending a target data signal to the interface thread, and displaying target information in the form of a list and a graph by the interface thread;
(4) starting a network thread;
(5) and starting an interface thread.
Further, the specific steps of step 2 include:
(1) according to the attributes of the target, creating a structure type for expressing the target;
(2) and applying for the target as the memory space of the data buffer pool for storing the received target information.
Furthermore, the attributes of the target of step (1) of step 2 include: target source, MMIS number, ship name, IMO number, call sign, ship type, nationality, CPA, TCPA, location, bearing, distance, track direction, track speed, destination, status, and turn rate.
The specific step of processing the network thread data in step 3 includes:
(1) the network thread starts a network receiving and timer;
(2) the network thread judges whether target information is received or not;
(3) after the network thread receives the target information, writing the data into a data buffer pool;
(4) the network thread judges whether the timer triggering time is reached;
(5) and after the triggering time of the timer is reached, the timer is triggered at regular time, and the network thread sends the data information in the data buffer pool to the interface thread.
The specific steps of displaying the interface thread data in step 3 include:
(1) the interface thread judges whether a target data signal sent by the network thread is received or not;
(2) and after receiving the target data signal sent by the network thread, the interface thread calls the associated slot function and displays the data in a form of a table or a graph.
And the step (2) of displaying the interface thread data in the step 3 comprises the following specific steps:
firstly, an interface thread judges whether a target list and a graph need to be updated according to a current display mode and a target type;
when the display mode and the target type of the radar information are selected through man-machine interaction, an interface thread updates a target list and a graph, and the interface displays the target information output by the radar;
when the display mode and the target type of the AIS information are selected through man-machine interaction, the target list and the graph are updated through an interface thread, and the target information output by the AI S is displayed on the interface;
when the man-machine interaction selects the display mode and the target type of the superposed information, the interface thread updates the target list and the graph, and the interface simultaneously displays the target information output by the radar and the AIS;
when the display mode and the target type of the difference information are selected through man-machine interaction, the interface thread is matched with the difference targets of the radar and the AIS, the interface thread updates a target list and a graph, and the interface displays the difference target information;
and the specific method for matching the difference value targets of the radar and the AIS by the interface thread in the fifth step is as follows: calculating the distance between each radar target and each AIS target, and if the distance between any one radar target and each AIS target is greater than a preset threshold value, judging that the radar target is a difference target; on the contrary, if the distance between any AIS target and each radar target is larger than the preset threshold value, the AIS target is judged to be the difference target.
The invention has the advantages and positive effects that:
1. the invention provides a situation display method supporting multi-source target screening, which provides superposition and difference information display for users on the basis of providing radar and AIS equipment output information for the users, and assists navigation personnel in making decisions.
2. The invention can provide three modes of single-equipment output target information display, superposition target information display and difference target information display for the user so as to fulfill the aim of meeting the requirements of the user to the maximum extent.
3. The invention can simplify the interface layout, enhance the human-computer interaction friendliness and simultaneously meet the requirements of different users.
Drawings
FIG. 1 is a data flow diagram of the interface thread and network thread initialization of the present invention;
FIG. 2 is a network thread data processing flow diagram of the present invention;
FIG. 3 is a flow diagram of interface thread data display in accordance with the present invention;
fig. 4 is a diagram of a target display mode of the present invention.
Detailed Description
The embodiments of the invention will be described in further detail below with reference to the accompanying drawings:
a situation display method supporting multi-source target screening comprises the following steps:
step 1, initializing a network thread and an interface thread;
the specific steps of step 1, as shown in fig. 1, include:
(1) creating a network thread;
establishing a network thread by initializing a network environment, establishing a socket and binding a port number, and sending a target data signal to an interface thread after waiting for data reception and processing the received data;
(2) creating an interface thread;
the interface thread is a main thread of a software program and is mainly responsible for creating a control, setting a control style, layout management and the like;
(3) and associating the signal slot relation between the interface thread and the network thread, and sending a target data signal to the interface thread after the network thread receives and processes the data, wherein the interface thread displays target information in the forms of lists and graphs.
(4) Starting a network thread;
(5) and starting an interface thread.
Step 2, creating a target data structure;
the specific steps of the step 2 comprise:
(1) according to the attributes of the target, creating a structure type for expressing the target;
the attributes of the target include: target source (AIS/radar), MMIS number, ship name, IMO number, call sign, ship type, nationality, CPA, TCPA, location, bearing, distance, track direction, track speed, destination, status, turn rate, etc.;
(2) and applying for the target as the memory space of the data buffer pool for storing the received target information.
Step 3, processing the network thread data and displaying the interface thread data;
the specific step of processing the network thread data in step 3, as shown in fig. 2, includes:
(1) the network thread starts a network receiving and timer;
(2) the network thread judges whether target information is received or not;
(3) after the network thread receives the target information, writing the data into a data buffer pool;
(4) the network thread judges whether the timer triggering time is reached;
(5) and after the triggering time of the timer is reached, the timer is triggered at regular time, and the network thread sends the data information in the data buffer pool to the interface thread.
The specific steps of displaying the interface thread data in step 3, as shown in fig. 3, include:
(1) the interface thread judges whether a target data signal sent by the network thread is received or not;
(2) and after receiving the target data signal sent by the network thread, the interface thread calls the associated slot function and displays the data in a form of a table or a graph.
The step (2) of the step 3 comprises the following specific steps:
firstly, an interface thread judges whether a target list and a graph need to be updated according to a current display mode and a target type;
when the display mode and the target type of the radar information are selected through man-machine interaction, an interface thread updates a target list and a graph, and the interface displays the target information output by the radar;
when the display mode and the target type of the AIS information are selected through man-machine interaction, the target list and the graph are updated through an interface thread, and the target information output by the AI S is displayed on the interface;
when the man-machine interaction selects the display mode and the target type of the superposed information, the interface thread updates the target list and the graph, and the interface simultaneously displays the target information output by the radar and the AIS;
when the display mode and the target type of the difference information are selected through man-machine interaction, the interface thread is matched with the difference targets of the radar and the AIS, the interface thread updates a target list and a graph, and the interface difference target information is displayed;
in this embodiment, the interface thread provides four display modes for the user: the radar target, the AIS target, the overlay target, and the difference target, the interface is shown in fig. 4. The default condition of the interface thread is that radar target information is displayed, and when a user selects an AIS target, the interface displays target information output by the AIS; when the user selects the superposition target, the interface simultaneously displays target information output by the radar and the AI S; when a difference target is selected, the interface displays different targets for the radar and AIS outputs.
The specific method for matching the radar and AIS difference value target by the interface thread in the fifth step is as follows: and calculating the distance between each radar target and each AIS target, and if the distance between any one radar target and each AIS target is greater than a preset threshold value, judging that the radar target is a difference target. On the contrary, if the distance between any AIS target and each radar target is larger than the preset threshold value, the AIS target is judged to be the difference target.
In this embodiment, the different targets output by the radar and the AIS, that is, the difference target, may be understood as that no target with a distance smaller than a certain threshold value is found in another type of target information (where the threshold value is set to be 100m) by any type of target information, and the target of this type is considered as the difference target.
In this embodiment, after the above steps are performed, a software simulation test is performed in a CentOS system by using a QtCreator as a development environment, so that a situation display method supporting multi-source target screening is successfully implemented, and the purpose of classified screening and displaying of multi-source target information is achieved, thereby maximally meeting the user requirements.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (5)
1. A situation display method supporting multi-source target screening is characterized in that: the method comprises the following steps:
step 1, initializing a network thread and an interface thread;
step 2, creating a target data structure;
step 3, processing the network thread data and displaying the interface thread data;
the specific steps of processing the network thread data in step 3 include:
(1) the network thread starts a network receiving and timer;
(2) the network thread judges whether target information is received or not;
(3) after the network thread receives the target information, writing the data into a data buffer pool;
(4) the network thread judges whether the timer triggering time is reached;
(5) after the triggering time of the timer is reached, the timer is triggered regularly, and the network thread sends data information in the data buffer pool to the interface thread;
the specific steps of displaying the interface thread data in the step 3 include:
(1) the interface thread judges whether a target data signal sent by the network thread is received or not;
(2) after receiving a target data signal sent by a network thread, an interface thread calls an associated slot function and displays data in a form of a table or a graph;
the step (2) of displaying the interface thread data in the step 3 comprises the following specific steps:
firstly, an interface thread judges whether a target list and a graph need to be updated according to a current display mode and a target type;
when the display mode and the target type of the radar information are selected through man-machine interaction, an interface thread updates a target list and a graph, and the interface displays the target information output by the radar;
when the display mode and the target type of the AIS information are selected through man-machine interaction, the interface thread updates a target list and a graph, and the interface displays the target information output by the AIS;
when the man-machine interaction selects the display mode and the target type of the superposed information, the interface thread updates the target list and the graph, and the interface simultaneously displays the target information output by the radar and the AIS;
when the display mode and the target type of the difference information are selected through man-machine interaction, the interface thread is matched with the difference targets of the radar and the AIS, the interface thread updates a target list and a graph, and the interface displays the difference target information.
2. The situation display method supporting multi-source target screening according to claim 1, wherein: the specific steps of the step 1 comprise:
(1) creating a network thread;
(2) creating an interface thread;
(3) correlating the signal slot relation between the interface thread and the network thread, when the network thread receives and processes the data, sending a target data signal to the interface thread, and displaying target information in the form of a list and a graph by the interface thread;
(4) starting a network thread;
(5) and starting an interface thread.
3. The situation display method supporting multi-source target screening according to claim 1 or 2, wherein: the specific steps of the step 2 comprise:
(1) according to the attributes of the target, creating a structure type for expressing the target;
(2) and applying for the target as the memory space of the data buffer pool for storing the received target information.
4. The situation display method supporting multi-source target screening according to claim 3, wherein: the attributes of the target of step 2 (1) include: target source, MMIS number, ship name, IMO number, call sign, ship type, nationality, CPA, TCPA, location, bearing, distance, track direction, track speed, destination, status, and turn rate.
5. The situation display method supporting multi-source target screening according to claim 1, wherein: the specific method for matching the radar and AIS difference value target by the interface thread in the fifth step is as follows: and calculating the distance between each radar target and each AIS target, and if the distance between any one radar target and each AIS target is greater than a preset threshold value, judging that the radar target is a difference target.
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| CN103793606A (en) * | 2014-01-27 | 2014-05-14 | 中国电子科技集团公司第十研究所 | Method for assessment of performance of multi-source sensor target synthetic recognition system |
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