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

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...

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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