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Moving object locating and tracking technique based on three-dimensional geographic information technique

A geographic information technology, a technology of moving objects, applied in the field of mobile positioning and tracking, can solve problems such as error-prone, unstable signal, poor track display effect and accuracy, etc.

Active Publication Date: 2013-06-12
TERRA DIGITAL CREATING SCI & TECH (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unstable signal of GPS equipment and the influence of terrain factors, errors are prone to occur. For users, there is a large deviation between the trajectory obtained by displaying moving object points and the actual trajectory, especially in low-speed states.
Although the implementation method is relatively simple, the trajectory display effect and accuracy are not ideal

Method used

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  • Moving object locating and tracking technique based on three-dimensional geographic information technique

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] First, determine the calculation area A.

[0016] The first step: make the DTM of area A, establish the 3D GIS foundation-DTM according to the actual situation of area A, based on the 3D geographic information display platform, and synthesize the 3D terrain with real coordinates and undulations by integrating aerial or satellite photos and DEM data, Then, by loading 3D models, text annotations, vector data and other materials, construct a 3D scene of area A. For the topography, landforms, and objects in key areas of concern, high-resolution data can be used to construct a detailed and realistic 3D scene;

[0017] Step 2: The monitored object carries the positioning device B (such as GPS, Beidou locator, etc.) to move in the area A, and the device collects the position data according to the predetermined time requirement and sends it back to the system as the original positioning data for storage;

[0018] Step 3: When it is necessary to display the trajectory of termina...

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Abstract

The invention discloses a new method which is used for displaying movement trail of a moving object. The method comprises the steps of collecting position information through obtaining an original point dynamic effect model (DEM) and a digital terrain model (DTM), choosing data, reversely conducting aggregation according to hot density, polymerizing various data sets according to time domains, calling the data after the original point DEM and the DTM are matched and aggregated, and enabling a result to be drawn in a three-dimensional scene. The practical movement trail of the object is reflected through the seven procedures. According to the method for displaying the movement trial of the moving object in a three-dimensional geographic information technique, due to addition of space aggregation calculation and time aggregation calculation, the fact that the movement trial of the object is truly restored is achieved, a good foundation is provided for various moving object locating and tracking systems.

Description

technical field [0001] The invention relates to a method for mobile positioning and tracking, in particular to a method for displaying the moving track of a moving object under the three-dimensional geographic information technology. Background technique [0002] At present, the mobile object positioning and tracking technology based on 3D geographic information technology is mainly based on GPS positioning and navigation equipment, and the device positioning data is used to directly display the trajectory in the mobile tracking system. Due to the unstable signal of GPS equipment and the influence of terrain factors, errors are prone to occur. For users, the trajectory obtained by displaying moving object points has a large deviation compared with the actual trajectory, and the error is especially obvious at low speeds. Although the implementation method is relatively simple, the trajectory display effect and accuracy are not ideal. The method truly restores the actual movi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05G06F17/30
Inventor 刘俊伟李蔚蔚杨俊唐莉萍
Owner TERRA DIGITAL CREATING SCI & TECH (BEIJING) CO LTD