CN117478667B - Working method for providing three-dimensional map sharing data on line based on GIS positioning - Google Patents

Working method for providing three-dimensional map sharing data on line based on GIS positioning Download PDF

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CN117478667B
CN117478667B CN202311432484.2A CN202311432484A CN117478667B CN 117478667 B CN117478667 B CN 117478667B CN 202311432484 A CN202311432484 A CN 202311432484A CN 117478667 B CN117478667 B CN 117478667B
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display screen
aerial vehicle
unmanned aerial
dimensional map
data
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CN117478667A (en
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张治清
赵根
李静
侯伟
朱丹
闫亮
曾航
胡源
谭龙生
王陆潇
罗波
沙漠
雷秋霞
孙小琴
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Chongqing Planning And Natural Resources Information Center
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/005—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 with correlation of navigation data from several sources, e.g. map or contour matching
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/29—Geographical information databases
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
    • G06T17/05—Geographic models
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/52—Network services specially adapted for the location of the user terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/3876—Recombination of partial images to recreate the original image
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/95—Computational photography systems, e.g. light-field imaging systems
    • H04N23/951—Computational photography systems, e.g. light-field imaging systems by using two or more images to influence resolution, frame rate or aspect ratio

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  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
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Abstract

The invention provides a working method for providing three-dimensional map sharing data on line based on GIS positioning, which comprises the following steps: s1, determining the position of an unmanned aerial vehicle; s2, according to the position of the unmanned aerial vehicle, downloading a three-dimensional map of the position of the unmanned aerial vehicle for sharing. The invention can realize sharing of the data shot by the unmanned aerial vehicle and the three-dimensional map data by the same screen.

Description

Working method for providing three-dimensional map sharing data on line based on GIS positioning
Technical Field
The invention relates to the technical field of cadastral information, in particular to a working method for providing three-dimensional map sharing data on line based on GIS positioning.
Background
The geographic information system (Geographic Information System or Geo-Information system, GIS) is sometimes referred to as a "geoscience information system". Patent application number 2022106350094, entitled "a GIS data sharing method and system", discloses a method comprising: receiving a map service request sent by a client; positioning a target map service according to the service themes, the map service types, the region ranges and the service versions; determining a screenshot geographic range containing the image spots according to the image spot information request; correcting the requested map level according to a preset map level range to obtain a target map level; calculating a screenshot pixel range according to the screenshot geographic range and the target map level; comparing the screenshot pixel range with the unit tile pixel range to adjust the screenshot geographic range; and acquiring tiles from the target map service according to the adjusted screenshot geographic range and the target map level, screenshot, processing the screenshot picture according to the output picture pixel range, and sending the screenshot picture to the client. The invention can ensure the safety of GIS data under the condition of controllable range, and can ensure that the client can obtain the data each time. But the invention does not share data with the screen, and therefore the present patent application has been made.
Disclosure of Invention
The invention aims at least solving the technical problems in the prior art, and particularly creatively provides a working method for providing three-dimensional map sharing data on line based on GIS positioning.
In order to achieve the above object of the present invention, the present invention provides a working method for providing three-dimensional map sharing data on line based on GIS positioning, comprising the steps of:
s1, determining the position of an unmanned aerial vehicle;
S2, according to the position of the unmanned aerial vehicle, downloading a three-dimensional map of the position of the unmanned aerial vehicle for sharing.
In a preferred embodiment of the present invention, in step S1, the unmanned aerial vehicle includes an unmanned aerial vehicle body, a PCB circuit board fixing mount for fixing and mounting a PCB circuit board is provided in the unmanned aerial vehicle body, the PCB circuit board is fixedly mounted on the PCB circuit board fixing mount, a controller, a positioning module and a wireless transmission module are provided on the PCB circuit board, a position data end of the positioning module is connected with a position data end of the controller, and a data end of the wireless transmission module is connected with a data transmission end of the controller; the positioning module is used for positioning the position of the unmanned aerial vehicle, and the wireless transmission module is used for realizing data communication between the unmanned aerial vehicle and the three-dimensional cadastre management platform; be provided with K panoramic camera on unmanned aerial vehicle body, be 1 st panoramic camera, 2 nd panoramic camera, 3 rd panoramic camera, … …, K panoramic camera respectively, panoramic camera is used for shooing the panoramic image around the unmanned aerial vehicle, and K panoramic image data end of K panoramic camera links to each other with the K panoramic image data end of controller, K is less than or equal to K's positive integer, is that 1 st panoramic camera's panoramic image data end links to each other with the 1 st panoramic image data end of controller, and 2 nd panoramic camera's panoramic image data end links to each other with the 2 nd panoramic image data end of controller, and 3 rd panoramic camera's panoramic image data end links to each other with the 3 rd panoramic image data end of controller, … …, and K panoramic camera's panoramic image data end links to each other with the K panoramic image data end of controller.
In a preferred embodiment of the present invention, the method for determining the position of the unmanned aerial vehicle by the positioning module in step S1 is:
wherein (X, Y, Z) represents the position of the unmanned aerial vehicle;
(X a,Ya,Za) represents the location described by base station a;
(X b,Yb,Zb) represents the position where the base station b is located;
(X c,Yc,Zc) represents the location of the base station c;
C represents the speed value between the unmanned plane and the base stations a, b and C;
the time when the unmanned aerial vehicle receives the measuring and calculating position of the base station a is represented;
indicating the moment when the unmanned aerial vehicle receives the measuring and calculating position of the base station b;
the time when the unmanned aerial vehicle receives the measuring and calculating position of the base station c is represented;
Phi a、φb、φc represents the time error rate of the unmanned aerial vehicle receiving each base station, phi a,φb,φc epsilon (0,5.7 per mill);
indicating the sending time of the measuring and calculating position of the base station a;
Indicating the sending time of the measuring and calculating position of the base station b;
the transmission time of the measured position of the base station c is indicated.
In a preferred embodiment of the present invention, the method of sharing the three-dimensional map in step S2 includes the steps of:
S21, a display screen is included on the sharing terminal, and the display screen is divided into two parts during sharing, wherein the two parts comprise a left display screen and a right display screen; the ratio of the left display screen to the right display screen is alpha to beta;
s22, displaying a three-dimensional map of the position of the unmanned aerial vehicle on a left display screen, and displaying a panoramic image shot by the unmanned aerial vehicle on a right display screen;
or displaying a three-dimensional map of the position of the unmanned aerial vehicle on a right display screen, and displaying a panoramic image shot by the unmanned aerial vehicle on a left display screen;
The method comprises the steps that a virtual switching key is arranged on a display screen, when the virtual switching key is pressed, data displayed on the left display screen and the right display screen are exchanged, namely after the virtual switching key is pressed, whether a three-dimensional map of the position of the unmanned aerial vehicle or a panoramic image shot by the unmanned aerial vehicle is displayed on the left display screen before the virtual switching key is pressed is judged:
If the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the left display screen, the panoramic image shot by the unmanned aerial vehicle is displayed on the right display screen, the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the right display screen, and the panoramic image shot by the unmanned aerial vehicle is displayed on the left display screen;
If the panoramic image shot by the unmanned aerial vehicle is displayed on the left display screen, the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the right display screen, the panoramic image shot by the unmanned aerial vehicle is displayed on the right display screen, and the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the left display screen.
In a preferred embodiment of the present invention, the following steps are further included in step S21:
s211, judging whether to press the dividing line of the left display screen and the right display screen:
If the dividing line of the left display screen and the right display screen is pressed, executing the next step; the dividing line is used for dividing the display screen into a left display screen and a right display screen;
If the dividing line of the left display screen and the right display screen is not pressed, executing the step S21;
S212, judging the sliding direction and the sliding distance:
if sliding to the left, the length of the left display screen is d L, D L denotes a length of the left display screen, d denotes a length value of the display screen, and Δd L denotes a leftward sliding distance value;
The length of the right display screen is d R, D R denotes the length of the right display screen, d denotes the length value of the display screen, and Δd L denotes the leftward sliding distance value; at this time, the length ratio of the left display screen to the right display screen is as follows:
if sliding to the right, the length of the left display screen is d L, D L denotes a length of the left display screen, d denotes a length value of the display screen, and Δd R denotes a rightward sliding distance value;
The length of the right display screen is d R, D R denotes a length of the right display screen, d denotes a length value of the display screen, and Δd R denotes a rightward sliding distance value; at this time, the length ratio of the left display screen to the right display screen is as follows:
alpha L/βR represents the ratio of the left and right display screens after sliding the split line.
In a preferred embodiment of the present invention, the method of downloading the three-dimensional map in step S2 includes the steps of:
S21, acquiring three-dimensional map data within ten kilometers of the position of the unmanned aerial vehicle according to the position of the unmanned aerial vehicle;
s22, carrying out encryption processing on the three-dimensional map data to obtain three-dimensional map safety data; transmitting the data to the sharing terminal;
s23, after receiving the data sent by the three-dimensional cadastral management platform, the sharing terminal processes the received data to obtain the downloaded three-dimensional map data.
In a preferred embodiment of the present invention, in step S22, the three-dimensional map data is encrypted, and the method for obtaining the three-dimensional map security data after the encryption comprises the following steps:
And encrypting the three-dimensional map data by using the key, obtaining three-dimensional map safety data of the three-dimensional map data after the encryption, and transmitting the link mark, the map number and the obtained three-dimensional map safety data to the sharing terminal.
In a preferred embodiment of the present invention, the method for obtaining the link flag and key comprises the steps of:
S221, the three-dimensional cadastral management platform requests a public key from the sharing terminal, at least one pair of public and private pairs are stored on the sharing terminal, and each public and private pair comprises a public key (the public key is an asymmetric public key) and a private key (the private key is an asymmetric private key);
S222, after receiving a public key request sent by the three-dimensional cadastre management platform, the sharing terminal sends the public key to the three-dimensional cadastre management platform;
S223, after the three-dimensional cadastral management platform receives the public key sent by the sharing terminal, the three-dimensional cadastral management platform generates a key (the key is a symmetric key) and stores the generated key on the three-dimensional cadastral management platform;
s224, encrypting the key through the public key, obtaining the security key of the key after the encryption, and sending the security key to the sharing terminal;
s225, after receiving the security key sent by the three-dimensional cadastre management platform, the sharing terminal decrypts the received security key through the private key to obtain the key, and meanwhile, a link mark is generated;
s226, storing the link mark and the key forming search pair in the sharing terminal; the link mark is encrypted through a key, a safe link mark is obtained after the encryption, and the safe link mark is sent to a three-dimensional cadastral management platform;
s227, after receiving the safe link mark sent by the sharing terminal, the three-dimensional cadastral management platform decrypts the received safe link mark through a key, obtains the link mark after the decryption, and stores the link mark on the three-dimensional cadastral management platform.
In a preferred embodiment of the present invention, the method for processing the received data by the shared terminal in step S23 includes the steps of:
s231, after receiving the link mark, the map number and the three-dimensional map security data sent by the three-dimensional cadastre management platform, the sharing terminal acquires a key corresponding to the link mark from the sharing terminal through the link mark;
s232, the sharing terminal decrypts the three-dimensional map security data according to the key obtained in the step S231, and obtains three-dimensional map data after processing;
S233, calculating a terminal map number of the three-dimensional map data obtained in the step S232 to obtain the terminal map number; judging whether the terminal map number is identical to the map number received in step S231:
if the terminal map number is consistent with the map number received in step S231, the three-dimensional map data obtained in step S232 is the three-dimensional map data in step S21; at this time, the sharing terminal obtains three-dimensional map data to be downloaded;
if the terminal map number is inconsistent with the map number in step S231, the three-dimensional cadastral management platform is re-requested to send data.
In a preferred embodiment of the present invention, the map number calculation method in step S22 is as follows:
Mapcode＝Mapcodecalculationway<Mapdata>，
Wherein Mapcode represents a map number obtained by performing map number calculation on three-dimensional map data to be downloaded;
mapcodecalculationway </SUB > represents a map number calculation method; preferably adopting an MD5 digest calculation method;
mapdata denotes three-dimensional map data to be downloaded;
In step S233, the method for calculating the terminal map number includes:
Mapter min alcode＝Mapter min alcodecalculationway<Mapter min aldata>，
Wherein MAPTER MIN alcode represents a terminal map number obtained by performing terminal map number calculation on the three-dimensional map data in step S232;
MAPTER MIN alcodecalculationway </SUB > represents a terminal map number calculation method; preferably adopting an MD5 digest calculation method;
MAPTER MIN ALDATA denotes the three-dimensional map data obtained by decrypting the three-dimensional map security data by the sharing terminal according to the key obtained in step S231.
In summary, due to the adoption of the technical scheme, the method and the device can realize sharing of the data shot by the unmanned aerial vehicle and the three-dimensional map data on the same screen.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
Fig. 1 is a schematic block diagram of a flow of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The invention provides a working method for providing three-dimensional map sharing data on line based on GIS positioning, as shown in figure 1, comprising the following steps:
s1, determining the position of an unmanned aerial vehicle;
S2, according to the position of the unmanned aerial vehicle, downloading a three-dimensional map of the position of the unmanned aerial vehicle for sharing.
In a preferred embodiment of the present invention, in step S1, the unmanned aerial vehicle includes an unmanned aerial vehicle body, a PCB circuit board fixing mount for fixing and mounting a PCB circuit board is provided in the unmanned aerial vehicle body, the PCB circuit board is fixedly mounted on the PCB circuit board fixing mount, a controller, a positioning module and a wireless transmission module are provided on the PCB circuit board, a position data end of the positioning module is connected with a position data end of the controller, and a data end of the wireless transmission module is connected with a data transmission end of the controller; the positioning module is used for positioning the position of the unmanned aerial vehicle, and the wireless transmission module is used for realizing data communication between the unmanned aerial vehicle and the three-dimensional cadastre management platform; be provided with K panoramic camera on unmanned aerial vehicle body, be 1 st panoramic camera, 2 nd panoramic camera, 3 rd panoramic camera, … …, K panoramic camera respectively, panoramic camera is used for shooing the panoramic image around the unmanned aerial vehicle, and K panoramic image data end of K panoramic camera links to each other with the K panoramic image data end of controller, K is less than or equal to K's positive integer, is that 1 st panoramic camera's panoramic image data end links to each other with the 1 st panoramic image data end of controller, and 2 nd panoramic camera's panoramic image data end links to each other with the 2 nd panoramic image data end of controller, and 3 rd panoramic camera's panoramic image data end links to each other with the 3 rd panoramic image data end of controller, … …, and K panoramic camera's panoramic image data end links to each other with the K panoramic image data end of controller.
In a preferred embodiment of the present invention, the method for determining the position of the unmanned aerial vehicle by the positioning module in step S1 is:
wherein (X, Y, Z) represents the position of the unmanned aerial vehicle;
(X a,Ya,Za) represents the location described by base station a;
(X b,Yb,Zb) represents the position where the base station b is located;
(X c,Yc,Zc) represents the location of the base station c;
C represents the speed value between the unmanned plane and the base stations a, b and C;
the time when the unmanned aerial vehicle receives the measuring and calculating position of the base station a is represented;
indicating the moment when the unmanned aerial vehicle receives the measuring and calculating position of the base station b;
the time when the unmanned aerial vehicle receives the measuring and calculating position of the base station c is represented;
Phi a、φb、φc represents the time error rate of the unmanned aerial vehicle receiving each base station, phi a,φb,φc epsilon (0,5.7 per mill);
indicating the sending time of the measuring and calculating position of the base station a;
Indicating the sending time of the measuring and calculating position of the base station b;
the transmission time of the measured position of the base station c is indicated.
In a preferred embodiment of the present invention, the method of sharing the three-dimensional map in step S2 includes the steps of:
S21, a display screen is included on the sharing terminal, and the display screen is divided into two parts during sharing, wherein the two parts comprise a left display screen and a right display screen; the ratio of the left display screen to the right display screen is alpha to beta; preferred α: β=1:1; it is also possible to use 4:6,3:7,7:3,6:4.
S22, displaying a three-dimensional map of the position of the unmanned aerial vehicle on a left display screen, and displaying a panoramic image shot by the unmanned aerial vehicle on a right display screen;
or displaying a three-dimensional map of the position of the unmanned aerial vehicle on a right display screen, and displaying a panoramic image shot by the unmanned aerial vehicle on a left display screen;
The method for displaying the panoramic image on the left display screen or the right display screen in step S22 is as follows:
and detecting the same parts among the images to be spliced according to the building characteristic points in the panoramic image shot by the unmanned aerial vehicle, deleting the same parts, and splicing the images to be spliced in pairs to obtain a frame of panoramic image.
The method for detecting the same part between the images to be spliced comprises the following steps:
converting the color image into a gray image using a gray conversion formula:
Gray(x,y)＝r*Red(x,y)+g*Green(x,y)+b*Blue(x,y),r+g+b＝1，
Wherein Gray (x, y) represents the Gray value at the image pixel point (x, y);
red (x, y) represents the Red value at an image pixel (x, y);
green (x, y) represents the Green value at the image pixel point (x, y);
blue (x, y) represents the Blue value at the image pixel point (x, y);
r, g, b represent coefficients of red, blue and green values, respectively;
Wherein Q represents the identity of the selected region between the two images to be stitched;
q i represents a judgment value;
Green (x i,yi) represents the gray value of the image to be stitched at the pixel point (x i,yi);
Green' (x i,yi) represents the gray value of another image to be stitched at the pixel point (x i,yi);
I represents the number of pixel points in a selected area between two images to be spliced;
If Q is less than or equal to Q 0, the selected area is the same part between the images to be spliced, and Q 0 represents a preset gray threshold.
The method comprises the steps that a virtual switching key is arranged on a display screen, when the virtual switching key is pressed, data displayed on the left display screen and the right display screen are exchanged, namely after the virtual switching key is pressed, whether a three-dimensional map of the position of the unmanned aerial vehicle or a panoramic image shot by the unmanned aerial vehicle is displayed on the left display screen before the virtual switching key is pressed is judged:
If the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the left display screen, the panoramic image shot by the unmanned aerial vehicle is displayed on the right display screen, the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the right display screen, and the panoramic image shot by the unmanned aerial vehicle is displayed on the left display screen;
If the panoramic image shot by the unmanned aerial vehicle is displayed on the left display screen, the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the right display screen, the panoramic image shot by the unmanned aerial vehicle is displayed on the right display screen, and the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the left display screen.
In a preferred embodiment of the present invention, the following steps are further included in step S21:
s211, judging whether to press the dividing line of the left display screen and the right display screen:
If the dividing line of the left display screen and the right display screen is pressed, executing the next step; the dividing line is used for dividing the display screen into a left display screen and a right display screen;
If the dividing line of the left display screen and the right display screen is not pressed, executing the step S21;
S212, judging the sliding direction and the sliding distance:
if sliding to the left, the length of the left display screen is d L, D L denotes a length of the left display screen, d denotes a length value of the display screen, and Δd L denotes a leftward sliding distance value;
The length of the right display screen is d R, D R denotes the length of the right display screen, d denotes the length value of the display screen, and Δd L denotes the leftward sliding distance value; at this time, the length ratio of the left display screen to the right display screen is as follows:
Where d min,L≤dL≤dmax,L,dmin,R≤dR≤dmax,R,dmin,L represents the minimum length value of the left display, d max,L represents the maximum length value of the left display, d min,R represents the minimum length value of the right display, d max,R represents the maximum length value of the right display, and preferably d min,L＝dmin,R,dmax,L＝dmax,R.
If sliding to the right, the length of the left display screen is d L,D L denotes a length of the left display screen, d denotes a length value of the display screen, and Δd R denotes a rightward sliding distance value;
The length of the right display screen is d R, D R denotes a length of the right display screen, d denotes a length value of the display screen, and Δd R denotes a rightward sliding distance value; at this time, the length ratio of the left display screen to the right display screen is as follows:
alpha L/βR represents the ratio of the left and right display screens after sliding the split line.
In a preferred embodiment of the present invention, the method of downloading the three-dimensional map in step S2 includes the steps of:
S21, acquiring three-dimensional map data within ten kilometers of the position of the unmanned aerial vehicle according to the position of the unmanned aerial vehicle;
s22, carrying out encryption processing on the three-dimensional map data to obtain three-dimensional map safety data; transmitting the data to the sharing terminal;
s23, after receiving the data sent by the three-dimensional cadastral management platform, the sharing terminal processes the received data to obtain the downloaded three-dimensional map data.
In a preferred embodiment of the present invention, in step S22, the three-dimensional map data is encrypted, and the method for obtaining the three-dimensional map security data after the encryption comprises the following steps:
And encrypting the three-dimensional map data by using the key, obtaining three-dimensional map safety data of the three-dimensional map data after the encryption, and transmitting the link mark, the map number and the obtained three-dimensional map safety data to the sharing terminal.
In a preferred embodiment of the present invention, the method for obtaining the link flag and key comprises the steps of:
S221, the three-dimensional cadastral management platform requests a public key from the sharing terminal, at least one pair of public and private pairs are stored on the sharing terminal, and each public and private pair comprises a public key (the public key is an asymmetric public key) and a private key (the private key is an asymmetric private key);
S222, after receiving a public key request sent by the three-dimensional cadastre management platform, the sharing terminal sends the public key to the three-dimensional cadastre management platform;
S223, after the three-dimensional cadastral management platform receives the public key sent by the sharing terminal, the three-dimensional cadastral management platform generates a key (the key is a symmetric key) and stores the generated key on the three-dimensional cadastral management platform;
s224, encrypting the key through the public key, obtaining the security key of the key after the encryption, and sending the security key to the sharing terminal;
s225, after receiving the security key sent by the three-dimensional cadastre management platform, the sharing terminal decrypts the received security key through the private key to obtain the key, and meanwhile, a link mark is generated;
s226, storing the link mark and the key forming search pair in the sharing terminal; the link mark is encrypted through a key, a safe link mark is obtained after the encryption, and the safe link mark is sent to a three-dimensional cadastral management platform;
s227, after receiving the safe link mark sent by the sharing terminal, the three-dimensional cadastral management platform decrypts the received safe link mark through a key, obtains the link mark after the decryption, and stores the link mark on the three-dimensional cadastral management platform.
In a preferred embodiment of the present invention, the method for processing the received data by the shared terminal in step S23 includes the steps of:
s231, after receiving the link mark, the map number and the three-dimensional map security data sent by the three-dimensional cadastre management platform, the sharing terminal acquires a key corresponding to the link mark from the sharing terminal through the link mark;
s232, the sharing terminal decrypts the three-dimensional map security data according to the key obtained in the step S231, and obtains three-dimensional map data after processing;
S233, calculating a terminal map number of the three-dimensional map data obtained in the step S232 to obtain the terminal map number; judging whether the terminal map number is identical to the map number received in step S231:
if the terminal map number is consistent with the map number received in step S231, the three-dimensional map data obtained in step S232 is the three-dimensional map data in step S21; at this time, the sharing terminal obtains three-dimensional map data to be downloaded;
if the terminal map number is inconsistent with the map number in step S231, the three-dimensional cadastral management platform is re-requested to send data.
In a preferred embodiment of the present invention, the map number calculation method in step S22 is as follows:
Mapcode＝Mapcodecalculationway<Mapdata>，
Wherein Mapcode represents a map number obtained by performing map number calculation on three-dimensional map data to be downloaded;
mapcodecalculationway </SUB > represents a map number calculation method; preferably adopting an MD5 digest calculation method;
mapdata denotes three-dimensional map data to be downloaded;
In step S233, the method for calculating the terminal map number includes:
Mapter min alcode＝Mapter min alcodecalculationway<Mapter min aldata>，
Wherein MAPTER MIN alcode represents a terminal map number obtained by performing terminal map number calculation on the three-dimensional map data in step S232;
MAPTER MIN alcodecalculationway </SUB > represents a terminal map number calculation method; preferably adopting an MD5 digest calculation method;
MAPTER MIN ALDATA denotes the three-dimensional map data obtained by decrypting the three-dimensional map security data by the sharing terminal according to the key obtained in step S231.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (5)

1. The working method for providing three-dimensional map sharing data on line based on GIS positioning is characterized by comprising the following steps:
s1, determining the position of an unmanned aerial vehicle;
s2, according to the position of the unmanned aerial vehicle, downloading a three-dimensional map of the position of the unmanned aerial vehicle for sharing; the method for sharing the three-dimensional map comprises the following steps:
S21, a display screen is included on the sharing terminal, and the display screen is divided into two parts during sharing, wherein the two parts comprise a left display screen and a right display screen; the ratio of the left display screen to the right display screen is alpha to beta;
s22, displaying a three-dimensional map of the position of the unmanned aerial vehicle on a left display screen, and displaying a panoramic image shot by the unmanned aerial vehicle on a right display screen;
or displaying a three-dimensional map of the position of the unmanned aerial vehicle on a right display screen, and displaying a panoramic image shot by the unmanned aerial vehicle on a left display screen;
The method comprises the steps that a virtual switching key is arranged on a display screen, when the virtual switching key is pressed, data displayed on the left display screen and the right display screen are exchanged, namely after the virtual switching key is pressed, whether a three-dimensional map of the position of the unmanned aerial vehicle or a panoramic image shot by the unmanned aerial vehicle is displayed on the left display screen before the virtual switching key is pressed is judged:
If the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the left display screen, the panoramic image shot by the unmanned aerial vehicle is displayed on the right display screen, the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the right display screen, and the panoramic image shot by the unmanned aerial vehicle is displayed on the left display screen;
If the panoramic image shot by the unmanned aerial vehicle is displayed on the left display screen, the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the right display screen, the panoramic image shot by the unmanned aerial vehicle is displayed on the right display screen, and the three-dimensional map of the position of the unmanned aerial vehicle is displayed on the left display screen.
2. The working method for providing three-dimensional map sharing data on line based on GIS positioning according to claim 1, wherein in step S1, the unmanned aerial vehicle comprises an unmanned aerial vehicle body, a PCB circuit board fixed mounting seat for fixedly mounting a PCB circuit board is arranged in the unmanned aerial vehicle body, the PCB circuit board is fixedly mounted on the PCB circuit board fixed mounting seat, a controller, a positioning module and a wireless transmission module are arranged on the PCB circuit board, a position data end of the positioning module is connected with a position data end of the controller, and a data end of the wireless transmission module is connected with a data transmission end of the controller; the positioning module is used for positioning the position of the unmanned aerial vehicle, and the wireless transmission module is used for realizing data communication between the unmanned aerial vehicle and the three-dimensional cadastre management platform; be provided with K panoramic camera on unmanned aerial vehicle body, be 1 st panoramic camera, 2 nd panoramic camera, 3 rd panoramic camera, … …, K panoramic camera respectively, panoramic camera is used for shooing the panoramic image around the unmanned aerial vehicle, and K panoramic image data end of K panoramic camera links to each other with the K panoramic image data end of controller, K is less than or equal to K's positive integer, is that 1 st panoramic camera's panoramic image data end links to each other with the 1 st panoramic image data end of controller, and 2 nd panoramic camera's panoramic image data end links to each other with the 2 nd panoramic image data end of controller, and 3 rd panoramic camera's panoramic image data end links to each other with the 3 rd panoramic image data end of controller, … …, and K panoramic camera's panoramic image data end links to each other with the K panoramic image data end of controller.
3. The method for providing three-dimensional map sharing data on line based on GIS positioning according to claim 1, wherein the method for determining the position of the unmanned aerial vehicle by the positioning module in step S1 is as follows:
wherein, (X a,Ya,Za) represents the location described by base station a;
(X b,Yb,Zb) represents the position where the base station b is located;
(X c,Yc,Zc) represents the location of the base station c.
4. The method for providing three-dimensional map sharing data on-line based on GIS positioning according to claim 1, further comprising the steps of:
s211, judging whether to press the dividing line of the left display screen and the right display screen:
If the dividing line of the left display screen and the right display screen is pressed, executing the next step;
If the dividing line of the left display screen and the right display screen is not pressed, executing the step S21;
S212, judging the sliding direction and the sliding distance:
if the left display screen slides leftwards, the length of the left display screen is d L;
the length of the right display screen is d R; at the moment, the length ratio of the left display screen to the right display screen is alpha L/βR;
if the left display screen slides to the right, the length of the left display screen is d L;
the length of the right display screen is d R; at this time, the length ratio of the left and right display screens is α L/βR.
5. The method for providing three-dimensional map sharing data on-line based on GIS positioning according to claim 1, wherein the method for downloading the three-dimensional map in step S2 comprises the steps of:
S21, acquiring three-dimensional map data within ten kilometers of the position of the unmanned aerial vehicle according to the position of the unmanned aerial vehicle;
s22, carrying out encryption processing on the three-dimensional map data to obtain three-dimensional map safety data; transmitting the data to the sharing terminal;
s23, after receiving the data sent by the three-dimensional cadastral management platform, the sharing terminal processes the received data to obtain the downloaded three-dimensional map data.
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