Virtual transponder capture method and capture system based on satellite space distribution inspection

A technology of spatial distribution and transponders, applied in the field of virtual transponder capture method and capture system, capable of solving the problems of virtual transponder positioning accuracy and low efficiency

Active Publication Date: 2020-06-02
BEIJING JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to solve the problem of low positioning accuracy and efficiency of virtual transponders, and provide a virtual transponder capture method and capture system based on satellite spatial distribution inspection. The real-time comparison of the observation characteristics of the virtual transponder, using the spatial distribution of navigation satellites obtained by the satellite positioning receiver as the basis for the decision-makin

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  • Virtual transponder capture method and capture system based on satellite space distribution inspection
  • Virtual transponder capture method and capture system based on satellite space distribution inspection
  • Virtual transponder capture method and capture system based on satellite space distribution inspection

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no. 1 example

[0101] This embodiment provides a virtual transponder acquisition method based on satellite spatial distribution inspection, figure 1 Shown is a schematic flow chart of the virtual transponder capture method. Such as figure 1 As shown, the virtual transponder capture method includes the following steps:

[0102] Step S1, collecting data of the target track line to establish a virtual transponder basic database;

[0103] Step S2: Obtain the coordinate position of the train currently running according to the satellite navigation information and calculate the train running status information, extract the information related to the current running train in the virtual transponder basic database, and predict the target virtual transponder to be captured and the triggering time of pre-capture ;

[0104] Step S3, starting from the triggering moment of the pre-capture, extracting the navigation satellite observation information in real time, calculating the characteristic value of...

no. 2 example

[0187] This embodiment provides a virtual transponder acquisition system based on satellite spatial distribution inspection, Figure 7 A schematic diagram of the virtual transponder capture system is shown. Such as Figure 7As shown, the virtual transponder acquisition system based on satellite spatial distribution inspection specifically includes: vehicle-mounted subsystem 01 and central subsystem 02, and data and information are transmitted by wireless communication between the vehicle-mounted subsystem 01 and central subsystem 02; wherein:

[0188] The on-board subsystem 01 is used for:

[0189] Collect the data of the target track line to establish a virtual transponder basic database;

[0190] Obtain the coordinate position of the current operation of the train according to the satellite navigation information and calculate the train operation status information, extract the information relevant to the current operation train in the virtual transponder basic database, ...

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Abstract

The invention provides a virtual transponder capture method and capture system based on satellite space distribution inspection. The virtual transponder capture method comprises the following steps: firstly, establishing a virtual transponder basic database; then acquiring the current position and running state of a train according to satellite navigation, and predicting a target virtual transponder to be captured and a pre-capturing triggering moment according to the basic database; from the pre-capturing triggering moment, calculating a visual satellite space distribution characteristic value and a prediction value in real time; meanwhile, estimating a satellite spatial distribution reference value according to the basic database; judging the capture state of the target virtual transponder to be captured according to the satellite spatial distribution characteristic value, the characteristic value prediction value and the reference value; and determining the capture moment, correcting the current position of the train and updating the virtual transponder basic database. According to the method, the limitation of implementing capture space analysis from a positioning domain is overcome, the capture precision and real-time performance of the virtual transponder are improved, and the design, development and equipment manufacturing of a novel train control system can be effectively supported.

Description

technical field [0001] The invention belongs to the field of rail transit train operation control, in particular to a virtual transponder capture method and capture system based on satellite spatial distribution inspection. Background technique [0002] With the development of cities, rail transit plays an increasingly important role in the communication between cities and cities. During the operation of the rail transit system, the train operation control system is the control center that determines the safety of train operation and improves transportation efficiency. The train control system includes the trackside part and the on-board part, and realizes the positioning and control of the train through the communication between the trackside equipment and the on-board equipment. In order to improve the accuracy of train positioning, it is necessary to install a large number of transponders along the railway line, and the increase in the number of transponders also increas...

Claims

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Application Information

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IPC IPC(8): H04B7/185G01S19/50B61L25/02
CPCB61L25/025B61L2205/04G01S19/50H04B7/1851H04B7/18519
Inventor 刘江蔡伯根王剑陆德彪上官伟姜维柴琳果
Owner BEIJING JIAOTONG UNIV
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