Radio and television wireless coverage management method and system based on live-action map

Abstract

The invention discloses a radio and television wireless coverage management method and system based on a live-action map, relates to the technical field of live-action maps, and solves the problems that in the prior art, places which cannot be covered by wireless signals cannot be automatically analyzed through a unified standard, and station building planning and existing station management are not facilitated. The invention provides a radio and television wireless coverage management method and system based on a live-action map, and the method can obtain the field intensity value around each station based on an ITU-R P.1546 model, enables the field intensity values to be superposed on a map in a color coding manner, and forms a field intensity distribution diagram. And the position where the field intensity value is lower than the field intensity threshold value is obtained based on the formed field intensity distribution diagram, the position where the field intensity value is lower than the field intensity threshold value is recorded, and an alarm signal is sent, so that a worker can conveniently judge whether a new station needs to be added or not, and station building planning is facilitated by combining the field intensity with the map for display.

Description

Technical Field

[0001] The present invention relates to the technical field of real-scene maps, and in particular to a method and system for managing radio and television wireless coverage based on real-scene maps. Background Art

[0002] Radio and TV wireless transmitters are key facilities for the propagation of radio and television signals. They use high-power transmitters to convert signals into radio waves and broadcast them to surrounding areas through antennas. These transmitters are usually located on high ground or towers to ensure wide signal coverage. Transmitters can not only transmit sound and images, but also transmit data and other multimedia content through frequency modulation (FM), amplitude modulation (AM) or digital broadcasting technology. With the development of technology, wireless transmitters are also constantly upgraded to meet the needs of the digital age, providing higher quality signals and richer program content. Identifying wireless coverage is crucial for radio and TV wireless transmitters because it is directly related to the propagation effect and reception quality of the signal. Accurate coverage data can help transmitters optimize transmission power and antenna parameters to ensure stable signal reception within the predetermined area while avoiding interference to neighboring areas. In addition, understanding the coverage helps transmitters to carry out frequency planning, reasonably allocate resources, and prevent mutual interference between different channels. In emergency situations, such as natural disasters, accurate coverage information plays a decisive role in quickly restoring broadcast services and delivering important information. With the advancement of technology, the use of geographic information systems (GIS) and signal propagation models can more accurately predict and simulate coverage, providing a scientific basis for the daily operation and maintenance and decision-making of transmitters.

[0003] However, the current management method for radio and television wireless coverage big data still remains at the stage of manually analyzing the field strength and then forming a field strength map based on the long gun information, and then based on experience analysis and judgment on how to ensure the perfection of radio and television wireless coverage. This process is time-consuming and laborious and too dependent on the experience and ability of the staff. It is impossible to automatically analyze the places where the wireless signal cannot be covered through a unified standard, which is not conducive to station planning and management of existing stations. Moreover, in the process of station planning and management, an integrated management system is needed to facilitate users to upload and query files, but there is no such system yet.

[0004] In view of this, a method and system for managing radio and television wireless coverage based on real-life maps is needed. Summary of the invention

[0005] In view of the problem that the prior art cannot automatically analyze the places where wireless signals cannot be covered by unified standards, which is not conducive to station planning and management of existing stations, the present invention provides a radio and television wireless coverage management method and system based on real-life maps, which can obtain the field strength value around each station based on the ITU-R P.1546 model, superimpose the field strength value on the map in a color-coded manner to form a field strength distribution map, and obtain the position where the field strength value is lower than the field strength threshold based on the formed field strength distribution map, record the position where the field strength value is lower than the field strength threshold and send an alarm signal, which further facilitates the staff to judge whether a new station is needed. Combining the field strength and map display is conducive to station planning. The specific technical solution is as follows:

[0006] A method for managing radio and television wireless coverage based on a real-life map comprises the following steps:

[0007] Obtain the field strength calculation data of each station, including latitude and longitude information, transmitting antenna height, receiving antenna height and frequency;

[0008] Based on the ITU-R P.1546 model, the field strength values ​​around each station are obtained, and the field strength values ​​are combined with the longitude and latitude coordinates to form field strength data;

[0009] Based on the field strength data, the field strength values ​​are superimposed on the map in a color-coded manner to form a field strength distribution map;

[0010] A field strength threshold is set, and a position where the field strength value is lower than the field strength threshold is obtained based on the formed field strength distribution map, and the position where the field strength value is lower than the field strength threshold is recorded and an alarm signal is sent.

[0011] Preferably, the formation process of the field intensity distribution map is as follows:

[0012] Create a Cesium Viewer instance and initialize a scene;

[0013] Use the ImageryProvider provided by Cesium to add real-life maps;

[0014] Use Cesium's Entity to represent the field strength value at each location, where Entity contains the attributes of position and color;

[0015] According to the range of field strength values, color mapping is set so that different field strength values ​​correspond to different colors, and the higher the field strength, the darker the color;

[0016] Add the created Entity to the CesiumViewer scene.

[0017] Preferably, the steps of obtaining a position where the field strength value is lower than the field strength threshold value based on the formed field strength distribution map, recording the position where the field strength value is lower than the field strength threshold value and sending an alarm signal are specifically as follows:

[0018] Get the field intensity map containing the attributes of position and color based on the created Entity;

[0019] The field intensity map is grayed out and the image is divided into several regions by selecting a specific pixel coordinate range;

[0020] Find the average pixel value of each area;

[0021] Based on the set field intensity threshold, a pixel threshold under the field intensity threshold is obtained, and the pixel average value of each area is compared with the pixel threshold. The area with a pixel value less than the pixel threshold is determined as an alarm area;

[0022] Obtain the coordinates of the center point of the alarm area, and map the coordinates of the center point on the map to form the longitude and latitude information of the center point of the alarm area;

[0023] Send an alarm signal, wherein the alarm signal includes the latitude and longitude information of the center point of the alarm area.

[0024] Preferably, the method further comprises the following steps:

[0025] Designed with B / S as the architecture system, using MySQL as the database, the station data and station license information are entered. The station data includes: station latitude and longitude, altitude, station address, broadcast frequency, broadcast program, transmission power, antenna height, polarization mode;

[0026] Combine the station data with the station latitude and longitude data, set a hyperlink label on the real-life map, and click the hyperlink label to jump to the location where the station information is stored in the MySQL database;

[0027] Obtain the license information from the ledger, and extract the license period from the license information, and issue an alarm reminder to the station when the license period reaches the set period threshold.

[0028] A radio and television wireless coverage management system based on a real-scene map, applied to the above method, comprises:

[0029] 3D real-life map module, which creates 3D real-life maps based on Cesium as a map development framework;

[0030] The field strength distribution map generation module obtains the field strength values ​​around each station based on the ITU-R P.1546 model, and superimposes the field strength values ​​on the map in a color-coded manner to form a field strength distribution map;

[0031] The station database is designed with B / S architecture and uses MySQL as the database to input station data and station license information. The station data includes station latitude and longitude, altitude, station address, broadcast frequency, broadcast program, transmission power, antenna height, and polarization mode;

[0032] The station certificate resource management module records the station's certificate information by importing, entering and uploading, and provides an access interface to the terminal. It also extracts the certificate period from the certificate information and issues an alarm to stations whose certificate period reaches the set period threshold.

[0033] Preferably, it also includes a station equipment information management module, which enters the equipment information of each station into the system according to fixed categories, and uniformly manages the station-side external power, antenna feed, monitoring alarm, signal source, UPS, tower, oil engine, transmitter and other equipment, and checks the equipment operation, maintenance and warranty status in real time, and can also record fault conditions and the number of occurrences.

[0034] Preferably, it also includes a station technical file resource management module, which provides a technical file storage and sharing platform, opens a terminal input port and a terminal reading port, and the terminal inputs or reads various technical files through the input port.

[0035] A computer-readable storage medium includes a stored program, wherein when the program is run, the device where the computer-readable storage medium is located is controlled to execute the radio and television wireless coverage management method based on real-scene maps as described above.

[0036] A processor is used to run a program, wherein when the program is run, the broadcasting and television wireless coverage management method based on real-scene maps as described above is executed.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] (1) It can obtain the field strength value around each station based on the ITU-R P.1546 model, superimpose the field strength value on the map in a color-coded manner to form a field strength distribution map, and obtain the location where the field strength value is lower than the field strength threshold based on the formed field strength distribution map, record the location where the field strength value is lower than the field strength threshold and send an alarm signal, which further facilitates the staff to judge whether to add a new station. The combination of field strength and map display is conducive to station construction planning.

[0039] (2) Based on the autonomous, safe and controllable Cesium 3D engine framework, this system fully integrates multi-dimensional geospatial data with application requirements, realizes cross-border data integration, scene full-angle visualization, scene random interactive operation, scene attribute on demand and other functions, has the ability to import and export vector data KML files individually or in batches, realizes the import and query of station coverage maps in offline state, and simulates and monitors the station coverage effect. At the same time, the map is compatible with 3D terrain elevation maps and 3D tilt models, which can be integrated and displayed in the same scene and operated independently, and has 2D and 3D full-angle browsing capabilities.

[0040] (3) Integrate the field strength calculation results to achieve seamless integration of the calculation results with satellite maps, and at the same time establish models and collect data to make highly realistic analyses for the planning, measurement, monitoring, and upgrade optimization of provincial radio and television wireless coverage. At the same time, the system integrates station data, including longitude and latitude, station location, broadcast frequency, transmission power, etc., to provide strong support for station management, asset management, and emergency management.

[0041] (4) A solution for intelligent measurement of radio and television wireless coverage based on three-dimensional real-life satellite maps is proposed. The solution is developed using geographic information system (GIS) technology and the global ASTER GDEM (30-meter) elevation model and a 0.5-meter high-precision provincial-level 18-level satellite map. It can be applied to the coverage measurement of FM radio, terrestrial digital television, digital microwave, 5G broadcasting and other services. It can complete the measurement of wireless transmission station coverage, coverage population entry and measurement, station site selection, frequency planning, automatic route measurement, etc. It can provide intelligent solutions for station construction in complex terrain and landform environments, which will greatly improve work efficiency and reduce labor costs.

[0042] (5) The system realizes the data sharing business process security and controllability. According to the business logic, the work link of the business process is clearly defined, and abnormal behaviors such as expired certificates and licenses are automatically reminded according to the process rules, so as to build a complete supervision system and realize effective process supervision; according to data security requirements, sharing services are provided according to permissions to realize safe and effective management and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0044] Figure 1 is a flow chart of the method of the present invention;

[0045] Figure 2The present invention is a schematic diagram of the system architecture of a radio and television wireless coverage management system based on a real-scene map. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0048] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0049] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0050] Combine the following Figure 1-Figure 2 , the specific implementation methods of the present invention are further described.

[0051] like Figure 1 As shown, in one embodiment of the present invention, a method for managing radio and television wireless coverage based on a real-life map is provided, comprising the following steps:

[0052] S1: Obtain the field strength calculation data of each station, including latitude and longitude information, transmitting antenna height, receiving antenna height and frequency;

[0053] S2: Based on the ITU-R P.1546 model, the field strength values ​​around each station are obtained, and the field strength values ​​are combined with the longitude and latitude coordinates to form field strength data; the details are as follows:

[0054] S201: Determine parameters, determine the parameters of the transmitting station, including frequency, transmission power, antenna height, antenna gain, etc.

[0055] S201: Collect geographic information: Collect geographic information of the transmitter and its coverage area, including terrain, building distribution, etc. This information is crucial for predicting field strength.

[0056] S203: Setting model parameters: According to the requirements of the ITU-R P.1546 model, set relevant parameters, such as ground type, climate conditions, altitude of the receiving point, etc.

[0057] S204: Calculate basic propagation loss: Calculate basic propagation loss using the ITU-R P.1546 model, which typically includes free space propagation loss and atmospheric attenuation.

[0058] S205: Considering the influence of terrain: Based on the terrain data, calculate the influence of terrain on propagation loss, including multipath effect and shielding loss.

[0059] S206: Calculate total propagation loss: combine basic propagation loss, terrain influence, building influence and other factors to calculate the total propagation loss.

[0060] S207: Calculate the field strength at the receiving point: Calculate the field strength value of each receiving point according to the transmission power of the transmitting station and the total propagation loss.

[0061] Here is a reference code for deriving field strength using the ITU-R P.1546 model:

[0062]

[0063]

[0064] In addition, the method may further include the steps of: creating a field strength coverage map: visualizing the calculated field strength values ​​in a geographic information system (GIS) to create a field strength coverage map.

[0065] S3: Based on the field strength data, the field strength values ​​are superimposed on the map in a color-coded manner to form a field strength distribution map;

[0066] The formation process of the field strength distribution map is as follows:

[0067] S301: Create a Cesium Viewer instance and initialize a scene;

[0068] S302: Use ImageryProvider provided by Cesium to add real-life maps;

[0069] S303: Use Cesium's Entity to represent the field strength value at each position, where Entity contains attributes of position and color;

[0070] S304: setting color mapping according to the range of field intensity values, so that different field intensity values ​​correspond to different colors, and the higher the field intensity, the darker the color;

[0071] S305: Add the created Entity to the CesiumViewer scene.

[0072] The main code is given below (simplified version, for reference only):

[0073]

[0074]

[0075] In practical applications, it may be necessary to dynamically generate Entity objects based on actual data, and more complex color mapping logic may be required to better represent field strength values.

[0076] S4: setting a field strength threshold, obtaining a position where the field strength value is lower than the field strength threshold based on the formed field strength distribution map, recording the position where the field strength value is lower than the field strength threshold and sending an alarm signal.

[0077] The steps of obtaining a position where the field strength value is lower than the field strength threshold value based on the formed field strength distribution map, recording the position where the field strength value is lower than the field strength threshold value and sending an alarm signal are as follows:

[0078] S401: obtaining a field strength map including attributes of position and color based on the created Entity;

[0079] S402: graying the field intensity map, and dividing the image into a number of regions by selecting a specific pixel coordinate range;

[0080] S403: Calculate the average pixel value of each area;

[0081] S404: obtaining a pixel threshold under the field intensity threshold based on the set field intensity threshold, comparing the pixel average value of each area with the pixel threshold, and determining an area with a pixel value less than the pixel threshold as an alarm area;

[0082] S405: Acquire the coordinates of the center point of the alarm area, and map the coordinates of the center point on a map to form the longitude and latitude information of the center point of the alarm area;

[0083] S406: Send an alarm signal, wherein the alarm signal includes the latitude and longitude information of the center point of the alarm area.

[0084] This embodiment also includes the following steps:

[0085] S01: Designed with B / S as the architecture system, using MySQL as the database to input station data and station license information. The station data includes: station latitude and longitude, altitude, station address, broadcast frequency, broadcast program, transmission power, antenna height, and polarization mode;

[0086] S02: Combine the station data and the station latitude and longitude data, set a hyperlink label on the real map, and jump to the location where the station information is stored in the MySQL database when clicking the hyperlink label;

[0087] S03: Obtain the license information of the ledger, and extract the license period from the license information, and issue an alarm reminder to the station when the license period reaches the set period threshold.

[0088] In one embodiment of the present invention, a radio and television wireless coverage management system based on a real-scene map is provided, which is applied to the method described above, and includes:

[0089] 3D real-life map module, which creates 3D real-life maps based on Cesium as a map development framework;

[0090] The field strength distribution map generation module obtains the field strength values ​​around each station based on the ITU-R P.1546 model, and superimposes the field strength values ​​on the map in a color-coded manner to form a field strength distribution map;

[0091] The station database is designed with B / S architecture and uses MySQL as the database to input station data and station license information. The station data includes station latitude and longitude, altitude, station address, broadcast frequency, broadcast program, transmission power, antenna height, and polarization mode;

[0092] The station certificate resource management module records the station's certificate information by importing, entering and uploading, and provides an access interface to the terminal. It also extracts the certificate period from the certificate information and issues an alarm to stations whose certificate period reaches the set period threshold.

[0093] The station equipment information management module enters the equipment information of each station into the system according to fixed categories, and uniformly manages the station's external power, antenna feeder, monitoring alarm, signal source, UPS, tower, oil generator, transmitter and other equipment, and checks the equipment operation, maintenance and warranty status in real time, while recording fault conditions and the number of occurrences.

[0094] The station technical file resource management module provides a technical file storage and sharing platform, opens terminal input ports and terminal reading ports, and the terminal inputs or reads various technical files through the input ports.

[0095] In one embodiment of the present invention, a radio and television wireless coverage management system based on real-life maps is provided, which is mainly divided into two subsystems: a real-life three-dimensional map twin system and a station big data management system. The map model of the real-life three-dimensional map twin system is based on the cross-platform design of Cesium's GIS engine, using QuickBird and LANDSAT-7 satellite map data. At the same time, the system is equipped with the global ASTER GDEM (30 meters) elevation model and a 0.5-meter high-precision provincial-level 18-level satellite map. The station big data management system has seven functional modules: station basic information management, license resource management, equipment information management, technical documents, project management, station display, and statistical management. Through unified LAN access, sharing the same set of data resources, and a one-stop access system, multiple application scenarios can be integrated and integrated, and data resources can be managed and controlled across levels, regions, and departments.

[0096] refer to Figure 2 The system comprises:

[0097] It is mainly divided into two subsystems: the real-life 3D map twin system and the station big data management system. The map model of the real-life 3D map twin system is based on the cross-platform design of Cesium's GIS engine, using QuickBird and LANDSAT-7 satellite map data. At the same time, the system is equipped with the global ASTER GDEM (30 meters) elevation model and 0.5-meter high-precision provincial-level 18-level satellite map. The station big data management system has 7 functional modules including station basic information management, license resource management, equipment information management, technical documents, project management, station display, and statistical management. Through unified LAN access, sharing the same set of data resources, and one-stop access to the system, multiple application scenarios can be integrated and integrated, and data resources can be managed and controlled across levels, regions, and departments.

[0098] Radio and television wireless transmission station database: The system is designed with B / S as the architecture system, using MySQL as the database, and all data related to provincial stations are entered, including: station latitude and longitude, altitude, station address, broadcast frequency, broadcast programs, transmission power, antenna height, polarization mode, etc.

[0099] The wireless transmitter station certificate resource management module records certificate information into the system by importing, entering and uploading. Other users can directly view the entered certificate information through the function page and receive timely reminders for certificates that are about to expire or have expired.

[0100] The wireless transmitter station equipment information management module enters the equipment information of each station into the system according to fixed categories, and other users can directly view the equipment information and station network topology diagram entered by each station through the function page. It mainly manages the station-side external power, antenna feeder, monitoring alarm, signal source, UPS, tower, oil generator, transmitter and other equipment in a unified manner, and checks the equipment operation, maintenance and quality assurance status in real time, and can also record the number of failures.

[0101] The wireless transmission station technical file resource management module mainly realizes the maintenance and management of station technical files. Users first create folders in each station, and then upload various technical files in the folders. Other users can directly view the technical information uploaded by each station through the function page.

[0102] Create a project management module to record project information by importing and entering information, such as the early stage of the project (planning, bidding, contract signing), project implementation, construction progress, project completion, project quality assurance, etc. Enter contract information in each project, and upload contract documents for each contract to achieve maintenance and management of project progress and contract information.

[0103] The field strength distribution map generation module obtains the field strength value around each station based on the ITU-R P.1546 model, and superimposes the field strength value on the map in a color-coded manner to form a field strength distribution map. Based on the ITU-RP1546 International Telecommunication Union radio wave propagation model, this module calculates the ideal coverage area of ​​the station without interference, enters the station field strength information in the system, and generates the corresponding field strength map, KML and other map visualization field strength files; uploads the field strength file to the system through the upload function, the system records the uploaded file information and saves the field strength file, and generates the layer command cabin data at the same time; the user controls the layer command cabin data through the system function and chooses whether to display the field strength map; the interface returns the field strength map file to the system according to the user's request, and the system displays it according to the coordinates, color scale and other information of the field strength map file, so as to view the station coverage effect and monitor the coverage range and intensity of the station.

[0104] The provincial wireless transmission station information statistics module and the regional station information statistics function mainly realize the classification statistics of the ledger information, and render the data through the Echarts component. The system counts the number of stations according to the region and transmission type through the data entered in the station data management module, and displays the number of ledgers in various cities through the provincial and municipal distribution static map. At the same time, it obtains data from the station license resource management module to count the expiration of the license. In addition, the user enters the coverage rate of each year.

[0105] In addition, the system also converts the station information into three-dimensional (longitude, latitude, altitude) in accordance with the data format of the map engine on the three-dimensional real-life map. By viewing the entered station information list, the station location information on the map is read and displayed in real time. For example, when the mouse clicks on the name or coordinate position of a station, the real-life three-dimensional map slowly advances from far to near, and finally locates the specific station clicked. The station information of the station can be queried, thereby displaying the real-life status and basic information of the station. Clicking each function button can query specific data information, which is convenient for users to obtain more comprehensive station ledger data in a timely manner. At the same time, various data can be updated in real time to ensure that the data is accurate and reliable.

[0106] In summary, the present invention can obtain the field strength value around each station based on the ITU-R P.1546 model, superimpose the field strength value on the map in a color-coded manner to form a field strength distribution map, and obtain the position where the field strength value is lower than the field strength threshold based on the formed field strength distribution map, record the position where the field strength value is lower than the field strength threshold and send an alarm signal, which further facilitates the staff to judge whether a new station is needed, and combining the field strength and the map to display is conducive to station planning. In addition, the present invention can also provide a data entry and sharing platform to achieve better data management.

[0107] Those of ordinary skill in the art will appreciate that the units of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition of each example has been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0108] In the embodiments provided by the present invention, it should be understood that the division of units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units can be combined into one unit, one unit can be split into multiple units, or some features can be ignored, etc.

[0109] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0110] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-0nlyMemory), random access memory (RAM, RandomAccessMemory), mobile hard disk, magnetic disk or optical disk, etc., which can store program code.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A method for managing radio and television wireless coverage based on real-life maps, characterized in that: The following steps are involved: Obtain the field strength calculation data of each station, including latitude and longitude information, transmitting antenna height, receiving antenna height and frequency; Based on the ITU-R P.1546 model, the field strength values ​​around each station are obtained, and the field strength values ​​are combined with the longitude and latitude coordinates to form field strength data; Based on the field strength data, the field strength values ​​are superimposed on the map in a color-coded manner to form a field strength distribution map; A field strength threshold is set, and a position where the field strength value is lower than the field strength threshold is obtained based on the formed field strength distribution map, and the position where the field strength value is lower than the field strength threshold is recorded and an alarm signal is sent.

2. A method for managing radio and television wireless coverage based on real-scene maps according to claim 1, characterized in that: The formation process of the field strength distribution map is as follows: Create a Cesium Viewer instance and initialize a scene; Use the ImageryProvider provided by Cesium to add real-life maps; Use Cesium's Entity to represent the field strength value at each location, where Entity contains the attributes of position and color; According to the range of field strength values, color mapping is set so that different field strength values ​​correspond to different colors, and the higher the field strength, the darker the color; Add the created Entity to the Cesium Viewer scene.

3. A method for managing radio and television wireless coverage based on real-life maps according to claim 2, characterized in that: The steps of obtaining the position where the field strength value is lower than the field strength threshold value based on the formed field strength distribution map, recording the position where the field strength value is lower than the field strength threshold value and sending an alarm signal are as follows: Get the field intensity map containing the attributes of position and color based on the created Entity; The field intensity map is grayed out and the image is divided into several regions by selecting a specific pixel coordinate range; Find the average pixel value of each area; Based on the set field intensity threshold, a pixel threshold under the field intensity threshold is obtained, and the pixel average value of each area is compared with the pixel threshold. The area with a pixel value less than the pixel threshold is determined as an alarm area; Obtain the coordinates of the center point of the alarm area, and map the coordinates of the center point on the map to form the longitude and latitude information of the center point of the alarm area; Send an alarm signal, which includes the latitude and longitude information of the center point of the alarm area.

4. The method for managing radio and television wireless coverage based on real-scene maps according to claim 2, characterized in that: The following steps are also included: Designed with B / S as the architecture system, using MySQL as the database, the station data and station license information are entered. The station data includes: station latitude and longitude, altitude, station address, broadcast frequency, broadcast program, transmission power, antenna height, polarization mode; Combine the station data with the station latitude and longitude data, set a hyperlink label on the real-life map, and click the hyperlink label to jump to the location where the station information is stored in the MySQL database; Obtain the license information from the ledger, and extract the license period from the license information, and issue an alarm reminder to the station when the license period reaches the set period threshold.

5. A radio and television wireless coverage management system based on real-life maps, characterized in that: The method applied to any one of claims 1 to 4, comprising: 3D real-life map module, which creates 3D real-life maps based on Cesium as a map development framework; The field strength distribution map generation module obtains the field strength values ​​around each station based on the ITU-R P.1546 model, and superimposes the field strength values ​​on the map in a color-coded manner to form a field strength distribution map; The station database is designed with B / S architecture and uses MySQL as the database to input station data and station license information. The station data includes station latitude and longitude, altitude, station address, broadcast frequency, broadcast program, transmission power, antenna height, and polarization mode; The station certificate resource management module records the station's certificate information by importing, entering and uploading, and provides an access interface to the terminal. It also extracts the certificate period from the certificate information and issues an alarm to stations whose certificate period reaches the set period threshold.

6. The radio and television wireless coverage management system based on real-scene maps according to claim 5 is characterized in that: It also includes a station equipment information management module, which enters the equipment information of each station into the system according to fixed categories, and uniformly manages the station's external power, antenna feed, monitoring alarm, signal source, UPS, tower, oil generator, transmitter and other equipment, and checks the equipment operation, maintenance and warranty status in real time, while recording fault conditions and the number of occurrences.

7. The radio and television wireless coverage management system based on real-scene maps according to claim 5 is characterized in that: It also includes a station technical file resource management module, which provides a technical file storage and sharing platform, opens terminal input ports and terminal reading ports, and the terminal inputs or reads various technical files through the input ports.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the radio and television wireless coverage management method based on real-scene maps as described in any one of claims 1 to 7.

9. A processor, characterized in that: The processor is used to run a program, wherein when the program is run, the broadcasting and television wireless coverage management method based on the real scene map described in any one of claims 1 to 7 is executed.

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