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An accelerated coordinate conversion method and device based on a recorder management platform

A technology of coordinate conversion and management platform, applied in geographic information database, special data processing application, multimedia data retrieval and other directions, can solve the problem that the recorder management platform does not have offset value cache, which affects the operation performance of the platform, and achieves high speed. , reduce service costs and improve performance

Active Publication Date: 2020-08-07
AEROSPACE HI TECH HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing recorder management platform does not have the offset value buffer function, and when the amount of coordinate data received is large, it seriously affects the operating performance of the platform, and proposes a recorder management platform based on Accelerated coordinate transformation method and device

Method used

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  • An accelerated coordinate conversion method and device based on a recorder management platform
  • An accelerated coordinate conversion method and device based on a recorder management platform
  • An accelerated coordinate conversion method and device based on a recorder management platform

Examples

Experimental program
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specific Embodiment approach 1

[0024] Specific implementation mode one: the accelerated coordinate conversion method based on the recorder management platform of this embodiment is as follows: figure 1 shown, including:

[0025] Step 1: Obtain the geographic coordinates to be processed.

[0026] Step 2: Transform the geographic coordinates into two-dimensional Cartesian coordinates. The units of geographic coordinates are degrees, and the units of two-dimensional Cartesian coordinates are centimeters.

[0027] For example, take the point where the meridian passes the equator as the origin, the longitude as the abscissa, the latitude as the ordinate, and the east longitude and north latitude as positive, establish a coordinate system, then the calculation of the two-dimensional Cartesian coordinates of each point in the east longitude and north latitude area on the earth surface The method is as follows, the unit is meter.

[0028] Abscissa: x=R*(lng*cos(lat*PI / 180)*PI / 180)

[0029] Ordinate: y=R*(lat*PI...

specific Embodiment approach 2

[0040] Embodiment 2: This embodiment differs from Embodiment 1 in that in step 6, when there is a value that matches the KEY value, it specifically includes the following steps:

[0041] Step A1: Get the KEY value.

[0042] Step A2: Obtain the offset corresponding to the KEY value.

[0043] Step A3: Calculate the Cartesian coordinates of the coordinates corresponding to the KEY value. The Cartesian coordinates here are the horizontal and vertical coordinates that split the string of the KEY value into, which represent the coordinates of the grid.

[0044] Step A4: Transform the Cartesian coordinates into geographic coordinates as offset coordinates.

[0045] Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0046] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is:

[0047] In step six, when there is no value matching the KEY value, specifically include the following steps:

[0048] Step B1: Obtain the offset coordinates of the coordinates corresponding to the KEY value through the network;

[0049] Step B2: Convert the coordinates and offset coordinates corresponding to the KEY value into two-dimensional Cartesian coordinates;

[0050] Step B3: Subtract the two-dimensional rectangular abscissa of the offset coordinate from the two-dimensional rectangular abscissa of the corresponding coordinate of KEY and round it up as the abscissa of the offset; subtract the two-dimensional rectangular ordinate of the offset coordinate from the corresponding KEY The two-dimensional Cartesian ordinate of the coordinate is rounded up and used as the ordinate of the offset.

[0051] Other steps and parameters are the same as those in Embodime...

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Abstract

The present invention relates to an accelerated coordinate transformation method and device based on a recorder management platform, and belongs to the field of electronic map vehicle location information processing. In order to the overcome the defect that the existing recorder management platform does not have an offset value cache function, which seriously affects operation performance of the platform when a relatively large volume of coordinate data is received, an accelerated coordinate transformation method and apparatus based on a recorder management platform are provided. The method provided by the present invention comprises: transforming to-be-processed geographical coordinates into two-dimensional orthogonal coordinates; according to given accuracy, meshing a coordinate system; solving coordinates of a southwest point of a mesh where the coordinates are located; combining abscissa and ordinate of the coordinates of the southwest point to form a character string as a KEY value; searching a cache for a value matched with the KEY value; if the value exists, calculating an offset value corresponding to the KEY value, and calculating offset coordinates; and if the value does not exist, acquiring offset coordinates of coordinates corresponding to the KEY value via a network, and calculating an offset value of the offset coordinates and storing the offset value into the cache.

Description

technical field [0001] The invention relates to an accelerated coordinate conversion method and device based on a recorder management platform, belonging to the field of electronic map vehicle position information processing. Background technique [0002] When the recorder management platform displays vehicle location information on the electronic map, it first needs to perform offset conversion on the coordinates, and then use the converted offset coordinates to display them correctly on the electronic map. The platform needs to access the coordinate offset service issued by the map service provider designated by the Ministry of Communications through the external network to be able to convert the coordinates normally. Due to the large number of vehicles on the platform and the high frequency of uploading coordinates, real-time coordinate conversion through the external network has seriously affected the operational performance of the platform. [0003] Because the vehicle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/44G06F16/29
CPCG06F16/29G06F16/444
Inventor 姜军李德贤郑祥滨刘明月陈玉峰
Owner AEROSPACE HI TECH HLDG GROUP
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