Virtual Transponder Acquisition Method and Acquisition System Based on Satellite Spatial Distribution Inspection

Abstract

The invention provides a virtual transponder capture method and capture system based on satellite spatial distribution inspection. The virtual transponder capture method first establishes a virtual transponder basic database, and then obtains the current position and running status of the train according to satellite navigation. The basic database predicts the virtual transponder of the target to be captured and the trigger time of pre-capture; then, from the trigger time of pre-capture, real-time calculation of the characteristic value and predicted value of the visible satellite space distribution, and at the same time estimate the satellite space distribution reference value according to the basic database, and then according to the satellite space Distribute eigenvalues, eigenvalue predicted values ​​and reference values, judge the capture state of the virtual transponder of the target to be captured, determine the capture time, correct the current position of the train and update the basic database of the virtual transponder. The invention overcomes the limitations of implementing capture space analysis starting from the positioning domain, improves the capture accuracy and real-time performance of the virtual transponder, and can effectively support the design, development and equipment manufacturing of a new train control system.

Description

technical field [0001] The invention belongs to the field of rail transit train operation control, and in particular relates 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. The increase in the number of transponders also...

AI Technical Summary

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-making of capture, overcomes the limitations of the capture space analysis in the conventional capture scheme starting from the positioning domain, and provides accurate identification and determination of virtual transponders. The capture state and capture time of the transponder provide a feasible way, thereby improving the capture accuracy and real-time performance of the virtual transponder, and effectively supporting the design, development and equipment manufacturing of new train control systems

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