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A Geographical Information Extraction and Target Tracking Method Based on SMR Target Trajectory

A technology of geographic information and target tracking, applied in the field of geographic information extraction and target tracking based on SMR target trajectory, can solve problems such as poor road map accuracy, and achieve the effect of improving continuity and track accuracy.

Active Publication Date: 2021-09-07
NANJING LES ELECTRONICS EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. When reliable road information cannot or has not been obtained, when the road map provided by the geographic information system cannot be updated in time, or when the accuracy of the current road map is poor

Method used

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  • A Geographical Information Extraction and Target Tracking Method Based on SMR Target Trajectory
  • A Geographical Information Extraction and Target Tracking Method Based on SMR Target Trajectory
  • A Geographical Information Extraction and Target Tracking Method Based on SMR Target Trajectory

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Embodiment Construction

[0072] Such as Figure 11 As shown, the present invention provides a kind of geographic information extraction and target tracking method based on SMR target trajectory, comprising the following steps:

[0073] Step 1. Extract the historical track data accumulated in the track database, and select and preprocess the large amount of extracted historical track data. For the data, see figure 1 ;

[0074] Extract the historical track data accumulated in the track database, analyze and solve the radar track parameter information, and judge the abnormal value data of the track parameters such as speed, position, time, for example, the position is greater than 10km, the speed is greater than 320km / h, and the time is greater than 86400 seconds, etc., that is to define such data as "outlier value", and judge and eliminate the historical track with "outlier value" data according to the reasonable value range of each parameter item of the track.

[0075] Step 2. Construct a constrained...

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Abstract

The invention provides a geographic information extraction and target tracking method based on SMR target trajectory, comprising: Step 1, performing track data selection and preprocessing to obtain target historical trajectory data; Step 2, extracting regional road polygons, and eliminating abnormal concave-convex roads area, identify road edge information; step 3, extract road network centerline, road course and road width data of target movement area, and eliminate false road information; step 4, identify road area type, and distinguish road types in different areas; step 5 , taking the geographic information of the road as a constraint into the corresponding Kalman filter equation to estimate the target state. This method can automatically extract road geographic information based on the target trajectory information actually detected and tracked by the radar and improve the accuracy of target tracking when the road geographic feature information cannot or has not been obtained, the airport infrastructure road information cannot be updated in time, and the map road accuracy is poor. Track accuracy and stability.

Description

technical field [0001] The invention belongs to the field of radar data processing, in particular to a geographic information extraction and target tracking method based on an SMR target trajectory. Background technique [0002] Surface Surveillance Radar (SMR) is mainly used for airport surface (runway and maneuvering area) traffic control, detection equipment for radar surveillance of aircraft, vehicles and other objects on runways, taxiways, and apron areas. SMR uses the scattering effect of electromagnetic waves to generate high-resolution radar images on the airport ground, and automatically records and tracks targets, providing the system with timely, accurate and comprehensive information on airport ground activities. The surface surveillance radar has technical characteristics such as high resolution, anti-ground objects and weather clutter, all-weather work, and high reliability. [0003] Road map information can be used to improve track accuracy and tracking stabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/91G01S13/72G01S13/58G01S13/89
CPCG01S13/58G01S13/72G01S13/726G01S13/89G01S13/91
Inventor 陈硕翟海涛商凯赵玉丽张鈞溥章林
Owner NANJING LES ELECTRONICS EQUIP CO LTD