GSM-R interference source automatic identification device and method

Abstract

The present invention proposes a device and method for automatically identifying a GSM-R interference source, comprising: using a uniform circular array antenna and a GSM-R dedicated antenna to receive radio signals along a railway; a real-time multi-channel receiver transmits the radio signals received by the uniform circular array antenna to a real-time processing unit; a power divider divides the radio signals received by the GSM-R dedicated antenna into a signal I and a signal II; a sweep frequency processing module performs sweep frequency processing on the signal I; a real-time spectrum processing module performs real-time spectrum processing on the signal II; the real-time processing unit receives spatiotemporal positioning information and obtains current cell carrier frequency configuration information through a basic database; identifies adjacent GSM-R cells according to the spatiotemporal positioning information, the carrier frequency configuration information and the radio signals received by the uniform circular array antenna, and monitors multipath signals of the adjacent cells; identifies interference signals according to the sweep frequency processing result, the real-time spectrum processing result, the multipath monitoring result and the carrier frequency configuration information, and obtains interference identification results.

Description

Technical Field

[0001] The present invention relates to the technical field of railway dynamic detection, and in particular to a device and method for automatically identifying a GSM-R interference source. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section.

[0003] As a dedicated channel for wireless data transmission between railway trains and the ground, the GSM-R network is responsible for services such as wireless train number verification, wireless transmission of dispatching commands, and transmission of train operation control information. It plays an irreplaceable role in organizing railway transportation, commanding train operations, and railway business liaison. In order to ensure the normal operation of the GSM-R network, the existing technology conducts GSM-R network inspections on high-speed railways and conventional railways through monthly operation of high-speed comprehensive inspection trains and electrical inspection vehicles. The inspection items include wireless field strength coverage, GSM-R service quality, and electromagnetic environment. Based on the current communication detection, the railway department can find problems such as unqualified field strength coverage, poor voice quality, frequency occupancy, and large signal blocking interference in the GSM-R network. However, the current GSM-R communication detection system does not have the ability to automatically identify interference sources.

[0004] At present, the identification of interference sources mainly relies on GSM-R service quality detection. During the detection process, the detection personnel check the service quality detection data. When they find that the voice quality of the GSM-R network downlink wireless link is poor and the receiving level of the adjacent cell rises sharply, they replay the sweep data and real-time spectrum data for analysis to confirm whether there is co-frequency cell interference, large signal blocking interference, intermodulation interference, etc. This interference source identification method has the problem of low efficiency. In addition, the interference source identification method based on sweep and real-time spectrum has the following two problems: (1) It is impossible to confirm whether there is multipath interference; (2) Under the conditions of low signal-to-noise ratio and low receiving level, the co-frequency interference identification method based on sweep cannot determine whether there is co-frequency interference because the sweep module cannot decode the GSM-R broadcast message. At the same time, in order to strengthen railway radio management and ensure the normal operation of railway radio services, the interference source monitoring capability needs to be improved.

[0005] In summary, there is an urgent need for a technical solution that can overcome the above-mentioned defects and effectively identify the interference source of GSM-R. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the present invention proposes a device and method for automatically identifying GSM-R interference sources. The present invention realizes automatic identification of interference sources along the railway based on frequency sweeping, real-time spectrum and array antenna, which can improve the efficiency and ability of interference source identification, promote the construction of a stable and orderly radio wave order along the railway, and effectively ensure the safety of railway communications.

[0007] In a first aspect of an embodiment of the present invention, a device for automatically identifying a GSM-R interference source is proposed, comprising: a uniform circular array antenna, a GSM-R dedicated antenna, a multi-channel receiver, a power divider, a frequency sweep processing module, a real-time spectrum processing module, a real-time processing unit, a system controller and a system display; wherein,

[0008] The uniform circular array antenna and the GSM-R dedicated antenna are used to receive radio signals along the railway;

[0009] The multi-channel receiver is connected to the uniform circular array antenna and is used to transmit the radio signal received by the uniform circular array antenna to the real-time processing unit;

[0010] The power divider is connected to the GSM-R dedicated antenna and is used to divide the radio signal received by the GSM-R dedicated antenna into signal I and signal II, input signal I to the frequency sweep processing module, and input signal II to the real-time spectrum processing module;

[0011] The frequency sweep processing module is used to perform frequency sweep processing on the signal I and send the frequency sweep processing result to the real-time processing unit;

[0012] The real-time spectrum processing module is used to perform real-time spectrum processing on the signal II and send the real-time spectrum processing result to the real-time processing unit;

[0013] The real-time processing unit is used to receive the time-space positioning information and obtain the current cell carrier frequency configuration information through the basic database;

[0014] According to the time-space positioning information, carrier frequency configuration information and the radio signal received by the uniform circular array antenna, the adjacent GSM-R cell is identified, the multipath signal of the adjacent cell is monitored, and the multipath monitoring result is obtained;

[0015] Identify interference signals based on frequency scanning processing results, real-time spectrum processing results, multipath monitoring results, and carrier frequency configuration information to obtain interference identification results;

[0016] Send the current position information of the dynamic detection vehicle and the interference identification result to the system controller;

[0017] The system controller is used to mark the interference source information on the map and display it in real time through the system display.

[0018] In a second aspect of an embodiment of the present invention, a method for automatically identifying a GSM-R interference source is proposed, comprising:

[0019] Use uniform circular array antennas and GSM-R dedicated antennas to receive radio signals along the railway;

[0020] A real-time multi-channel receiver is connected to the uniform circular array antenna and transmits the radio signal received by the uniform circular array antenna to the real-time processing unit;

[0021] The power divider is connected to the GSM-R dedicated antenna, divides the radio signal received by the GSM-R dedicated antenna into signal I and signal II, inputs signal I to the frequency sweep processing module, and inputs signal II to the real-time spectrum processing module;

[0022] The frequency sweep processing module performs frequency sweep processing on the signal I and sends the frequency sweep processing result to the real-time processing unit;

[0023] The real-time spectrum processing module performs real-time spectrum processing on the signal II and sends the real-time spectrum processing result to the real-time processing unit;

[0024] The real-time processing unit receives the time-space positioning information and obtains the current cell carrier frequency configuration information through the basic database;

[0025] According to the time-space positioning information, carrier frequency configuration information and the radio signal received by the uniform circular array antenna, the adjacent GSM-R cell is identified, the multipath signal of the adjacent cell is monitored, and the multipath monitoring result is obtained;

[0026] Identify interference signals based on frequency scanning processing results, real-time spectrum processing results, multipath monitoring results, and carrier frequency configuration information to obtain interference identification results;

[0027] Send the current position information of the dynamic detection vehicle and the interference identification result to the system controller;

[0028] The system controller identifies the interference source information on the map and displays it in real time through the system display.

[0029] In a third aspect of an embodiment of the present invention, a computer device is proposed, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements a method for automatically identifying a GSM-R interference source when executing the computer program.

[0030] In a fourth aspect of the embodiments of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, a method for automatically identifying a GSM-R interference source is implemented.

[0031] In a fifth aspect of the embodiments of the present invention, a computer program product is proposed. The computer program product includes a computer program. When the computer program is executed by a processor, a method for automatically identifying a GSM-R interference source is implemented.

[0032] The present invention receives radio signals along the railway through a GSM-R dedicated antenna and an array antenna installed on the roof of a dynamic detection vehicle, pre-processes the radio signals using a frequency sweeper, a real-time spectrum analyzer and a multi-channel receiver, and then identifies interference sources that affect the normal operation of GSM-R through a GSM-R interference source automatic identification algorithm, and displays interference source related information on a display. The overall solution can identify a variety of GSM-R interferences, improve the efficiency and ability of interference source identification, promote the construction of a stable and orderly radio wave order along the railway, and effectively ensure the safety of railway communications. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 FIG. 1 is a schematic diagram of the architecture of a device for automatically identifying a GSM-R interference source according to an embodiment of the present invention.

[0035] Figure 2 The figure is a schematic diagram of the position relationship of the element antennas of a uniform circular array antenna according to a specific embodiment of the present invention.

[0036] Figure 3A It is a schematic diagram of the existing receiver RF front-end architecture.

[0037] Figure 3B It is a schematic diagram of the front-end architecture of the multi-channel receiver of the present invention.

[0038] Figure 4 It is a schematic diagram of the process relationship of interference identification according to an embodiment of the present invention.

[0039] Figure 5 The figure is a flow chart of a method for automatically identifying a GSM-R interference source according to an embodiment of the present invention.

[0040] Figure 6 It is a schematic diagram of the structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The principles and spirit of the present invention will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are provided only to enable those skilled in the art to better understand and implement the present invention, and are not intended to limit the scope of the present invention in any way. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0042] Those skilled in the art will appreciate that the embodiments of the present invention may be implemented as a system, device, apparatus, method or computer program product. Therefore, the present disclosure may be specifically implemented in the following forms, namely: complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0043] According to an embodiment of the present invention, a device and method for automatically identifying a GSM-R interference source are proposed, which relates to the technical field of railway dynamic detection. The present invention adopts frequency sweeping, real-time spectrum and array antenna to realize automatic identification of all interference sources that affect the normal operation of GSM-R along the railway. Through frequency sweeping analysis, partial co-frequency cell interference and frequency point occupancy can be found. The real-time spectrum can find partial co-frequency interference, large signal blocking interference, intermodulation interference, adjacent frequency interference, and array antenna can find multipath interference and co-frequency interference. Among them, the interference source search method based on array antenna of the present invention can identify all co-frequency interference, including co-frequency cell interference of the line, co-frequency cell interference of the adjacent line, and multipath interference. The method proposed by the present invention can realize automatic identification of GSM-R interference sources, and significantly improve the efficiency of GSM-R interference source identification.

[0044] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0045] Figure 1 FIG. 1 is a schematic diagram of the architecture of a device for automatically identifying a GSM-R interference source according to an embodiment of the present invention. Figure 1 As shown, the device includes: a uniform circular array antenna 110, a GSM-R dedicated antenna 120, a multi-channel receiver 130, a power divider 140, a frequency sweep processing module 150, a real-time spectrum processing module 160, a real-time processing unit 170, a system controller 180 and a system display 190; wherein,

[0046] The uniform circular array antenna 110 and the GSM-R dedicated antenna 120 are used to receive radio signals along the railway;

[0047] The multi-channel receiver 130 is connected to the uniform circular array antenna 110 and is used to transmit the radio signal received by the uniform circular array antenna to the real-time processing unit 170;

[0048] The power divider 140 is connected to the GSM-R dedicated antenna 120 and is used to divide the radio signal received by the GSM-R dedicated antenna into a signal I and a signal II, and input the signal I to the frequency sweep processing module 150 and input the signal II to the real-time spectrum processing module 160;

[0049] The frequency sweep processing module 150 is used to perform frequency sweep processing on the signal I and send the frequency sweep processing result to the real-time processing unit 170;

[0050] The real-time spectrum processing module 160 is used to perform real-time spectrum processing on the signal II and send the real-time spectrum processing result to the real-time processing unit 170;

[0051] The real-time processing unit 170 is used to receive the time-space positioning information and obtain the current cell carrier frequency configuration information through the basic database;

[0052] According to the time-space positioning information, carrier frequency configuration information and the radio signal received by the uniform circular array antenna, the adjacent GSM-R cell is identified, the multipath signal of the adjacent cell is monitored, and the multipath monitoring result is obtained;

[0053] Identify interference signals based on frequency scanning processing results, real-time spectrum processing results, multipath monitoring results, and carrier frequency configuration information to obtain interference identification results;

[0054] Send the current position information of the dynamic detection vehicle and the interference identification result to the system controller 180;

[0055] The system controller 180 is used to mark the interference source information on the map and display it in real time through the system display 190.

[0056] In actual application scenarios, the GSM-R interference source automatic identification device of the present invention can also have a system power supply, which is charged through an AC220V interface. The real-time processing unit maintains communication with the location information interface, the uniform circular array antenna and the GSM-R dedicated antenna communicate with the radio frequency interface, and the system display is connected to the human-machine interface.

[0057] The present invention receives radio signals along the railway by means of a GSM-R dedicated antenna and an array antenna installed on the roof of a dynamic detection vehicle, pre-processes the radio signals by means of a frequency sweeper, a real-time spectrum analyzer and a multi-channel receiver, and then identifies interference sources that affect the normal operation of GSM-R by means of a GSM-R interference source automatic identification algorithm, and displays interference source related information on a display. The overall solution can identify a variety of GSM-R interferences with high accuracy, and can significantly improve the efficiency of GSM-R interference source identification.

[0058] In order to explain the above-mentioned GSM-R interference source automatic identification device more clearly, a detailed description is given below in conjunction with a specific embodiment. The term "module" or "unit" used below can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiment is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0059] Uniform circular array antenna 110:

[0060] The uniform circular array antenna is installed on the roof of the dynamic detection vehicle, and the uniform circular array antenna is connected to the multi-channel receiver through a feeder.

[0061] refer to Figure 2 The uniform circular array antenna is installed on the roof of the dynamic detection vehicle. The antenna array is composed of eight antennas. Each antenna is arranged on a circle at equal intervals. The angle φ between the array elements is 45 degrees. Numbers 1-8 are the positions of the eight antennas, and the reference array element is the array element numbered 1.

[0062] Specifically, eight antennas are arranged at equal intervals on a circle with a radius r of 0.165 m, and the operating frequency range of the array antenna is 600 MHz-6 GHz.

[0063] GSM-R dedicated antenna 120:

[0064] The GSM-R dedicated antenna is installed on the roof of the dynamic detection vehicle, and the GSM-R dedicated antenna is connected to the power divider through a feeder.

[0065] The GSM-R dedicated antenna is an antenna specially used for GSM-R vehicle-to-ground communication. It is mainly used to receive 900MHz band radio signals. Its operating frequency range includes 885-889MHz and 930-934MHz bands.

[0066] In this embodiment, the dynamic inspection vehicle is a special railway inspection vehicle, which mainly includes a high-speed comprehensive inspection train and an electrical inspection vehicle, which are used to inspect the status of communication infrastructure along the high-speed railway and conventional railway respectively.

[0067] Multi-channel receiver 130:

[0068] A multi-channel receiver is an instrument with the ability to receive and process multi-channel RF signals. It can realize the synchronous acquisition of eight-channel data. Multi-channel synchronous acquisition is an important guarantee for realizing high-precision array signal processing.

[0069] refer to Figure 3A and Figure 3B As shown in FIG. 1 , there are respectively a schematic diagram of an existing receiver RF front-end architecture and a schematic diagram of a front-end architecture of a multi-channel receiver of the present invention. Figure 3A and Figure 3B As shown, the multi-channel receiver of the present invention directly utilizes the technology of analog-to-digital converter to digitize the radio frequency signal. Before the signal undergoes analog-to-digital conversion, there is no need to convert the analog frequency into a lower intermediate frequency or baseband. The radio frequency sampling analog-to-digital converter can replace the traditional receiver radio frequency signal processing front end, including a mixer, a local oscillator synthesizer, an intermediate frequency amplifier and a filter (and in some cases, multiple analog-to-digital converters can be set). Compared with the prior art, the present invention uses a radio frequency analog-to-digital converter to realize direct sampling of radio frequency signals along the railway, which greatly reduces the materials used, cost, design time, size, weight and power consumption, while increasing the programmability of the software and the flexibility of the system.

[0070] Power divider 140:

[0071] The power divider is a device that evenly divides the GSM-R antenna input signal into two equal-power signals. On the one hand, it can improve the consistency of the radio signals received by the sweeper and real-time spectrum analyzer, and avoid inconsistent measurement results such as the receiving level and power due to differences in the installation position of the roof antenna. On the other hand, it can improve the current situation of insufficient roof antennas on dynamic detection vehicles.

[0072] Sweep frequency processing module 150:

[0073] The frequency scanning processing module is a GSM-R cell broadcast message decoding device, which obtains cell information by demodulating and decoding the radio signal received by the antenna, wherein the cell information at least includes MCC, MNC, LAC, CI, and frequency point number information.

[0074] Specifically, MCC is the mobile country code, which can be used to identify the country to which the GSM cell belongs. my country's MNC is 460. MNC is the mobile network code, which can be used to identify the operator to which the GSM cell belongs. my country's railway MNC is 20, China Mobile's MNC is 00, and China Unicom's MNC is 01. LAC is the location area identification code. GSM-R allocates different LAC codes to different railway lines, so the line to which the GSM-R cell belongs can be identified based on this. CI is the cell ID

[0075] Real-time spectrum processing module 160:

[0076] The real-time spectrum processing module is a spectrum analyzer, which is used to sample the input signal and perform spectrum analysis on the sampled signal. The time of spectrum analysis is shorter than the time of signal sampling.

[0077] Specifically, the real-time spectrum analyzer can capture signals with a duration of at least 27 microseconds with a 100% probability, which can ensure the capture of instantaneous interference signals. In actual application scenarios, the real-time bandwidth of the real-time spectrum analyzer is 40MHz, and the spectrum analysis of radio signals in the 925-965MHz downlink frequency band is performed in real time.

[0078] Real-time processing unit 170:

[0079] The real-time processing unit adopts a high-performance embedded processing module to receive the frequency sweeping results of the frequency sweeping processing module, the real-time spectrum processing results of the real-time processing module, and the sampling results of the multi-channel receiver to realize the identification of interference.

[0080] Specifically, the real-time processing unit receives the time-space positioning information and obtains the current cell carrier frequency configuration information through the basic database;

[0081] According to the time-space positioning information, carrier frequency configuration information and the radio signal received by the uniform circular array antenna, the adjacent GSM-R cell is identified, the multipath signal of the adjacent cell is monitored, and the multipath monitoring result is obtained;

[0082] Identify interference signals based on frequency scanning processing results, real-time spectrum processing results, multipath monitoring results, and carrier frequency configuration information to obtain interference identification results;

[0083] The current position information of the dynamic detection vehicle and the interference identification results are sent to the system controller.

[0084] refer to Figure 4 , is a schematic diagram of the process relationship of interference identification according to an embodiment of the present invention. Figure 4 As shown, the interference that can be identified by the real-time processing unit includes all types of interference that affect the normal operation of GSM-R, including at least co-channel interference, adjacent channel interference, large signal blocking interference, intermodulation interference, and multipath interference.

[0085] Blocking interference refers to the interference caused by nonlinear distortion when a strong interference signal and a useful signal enter the receiver at the same time. Blocking interference will cause the receiver to not work properly, and long-term blocking may also cause permanent performance degradation of the receiver. Intermodulation interference refers to the interference caused when two or more interference signals are added to the receiver at the same time. Due to the effect of nonlinearity, the combined frequency of the interference signals may be equal to or close to the useful signal frequency and pass through the receiver smoothly.

[0086] Specifically, the decoding result of the frequency scanner is analyzed to determine whether there is a cell with an MNC other than 20. If so, the frequency point occupancy is determined;

[0087] Determine whether there is a cell with the same BCCH and LAC but different CI. If so, further determine whether the level difference between this cell and the same-frequency cell is less than 12dBm. If so, it is determined that there is same-frequency interference on this line.

[0088] Determine whether there is a cell with the same BCCH but different LAC. If so, further determine whether the level difference between this cell and the cell with the same frequency is less than 12dBm. If so, it is determined that there is adjacent line co-frequency interference.

[0089] Analyze the real-time spectrum processing results to determine whether there is blocking interference, and if so, determine that there is blocking interference;

[0090] Determine whether intermodulation interference exists, and if so, determine that intermodulation interference exists.

[0091] Determine whether there is an adjacent frequency signal. If so, further determine whether the level difference between the current cell and the adjacent frequency signal is less than -6dBm. If so, it is determined that adjacent frequency interference exists.

[0092] According to the current position information of the dynamic detection vehicle and the radio signal received by the uniform circular array antenna, the adjacent GSM-R cell is identified through the basic database, the multipath signal of the adjacent cell is monitored, and the multipath monitoring result is obtained;

[0093] Specifically, by analyzing the incoming direction of the current cell frequency point, it is determined whether there is a multipath signal. If so, it is further determined whether the level difference between the multipath signals is less than 12dBm. If so, it is determined that there is a multipath result.

[0094] Among them, the current position information refers to the information including the current line, type of vehicle, and position of the dynamic inspection vehicle. For example, "Beijing-Shanghai High-speed Railway Upward K100+008" means that the inspection vehicle is currently located at 100.008 km on the Beijing-Shanghai High-speed Railway Upward.

[0095] The basic database refers to an electronic table containing the information of GSM-R base stations on the railway line, which at least includes the base station name, base station location, base station frequency, base station BSIC, CI, etc. The real-time processing unit can obtain the information of base stations near the current location through the basic database.

[0096] The real-time processing unit uses a direction-of-arrival estimation algorithm to monitor multipath signals in neighboring cells.

[0097] After the above process of identifying multiple interferences, the interference identification result can be obtained, and the current position information of the dynamic detection vehicle and the interference identification result are sent to the system controller;

[0098] System controller 180, system display 190:

[0099] Finally, the system controller 180 marks the interference source information on the map and displays it in real time through the system display 190 .

[0100] It should be noted that, although several modules of the GSM-R interference source automatic identification device are mentioned in the above detailed description, this division is only exemplary and not mandatory. In fact, according to an embodiment of the present invention, the features and functions of two or more modules described above can be embodied in one module. Conversely, the features and functions of one module described above can be further divided into multiple modules to be embodied.

[0101] After introducing the apparatus of the exemplary embodiment of the present invention, next, reference is made to Figure 5 A method for automatically identifying a GSM-R interference source according to an exemplary embodiment of the present invention is introduced.

[0102] Based on the same inventive concept, the present invention also proposes a method for automatically identifying a GSM-R interference source, such as Figure 5 As shown, the method includes:

[0103] S501, using a uniform circular array antenna and a GSM-R dedicated antenna to receive radio signals along the railway;

[0104] S502, a real-time multi-channel receiver is connected to a uniform circular array antenna and transmits a radio signal received by the uniform circular array antenna to a real-time processing unit;

[0105] S503, the power divider is connected to the GSM-R dedicated antenna, and the radio signal received by the GSM-R dedicated antenna is divided into signal I and signal II, and signal I is input to the frequency sweep processing module, and signal II is input to the real-time spectrum processing module;

[0106] S504, the frequency sweep processing module performs frequency sweep processing on the signal I, and sends the frequency sweep processing result to the real-time processing unit;

[0107] S505, the real-time spectrum processing module performs real-time spectrum processing on the signal II, and sends the real-time spectrum processing result to the real-time processing unit;

[0108] S506, the real-time processing unit receives the time-space positioning information and obtains the current cell carrier frequency configuration information through the basic database;

[0109] S507, identifying neighboring GSM-R cells according to the time-space positioning information, the carrier frequency configuration information, and the radio signal received by the uniform circular array antenna, monitoring multipath signals of the neighboring cells, and obtaining multipath monitoring results;

[0110] S508, identifying interference signals according to the frequency scanning processing result, the real-time spectrum processing result, the multipath monitoring result and the carrier frequency configuration information to obtain an interference identification result;

[0111] S509, sending the current position information of the dynamic detection vehicle and the interference identification result to the system controller;

[0112] S510: The system controller marks the interference source information on the map and displays it in real time through the system display.

[0113] It should be noted that, although the operations of the method of the present invention are described in a specific order in the above embodiments and the accompanying drawings, this does not require or imply that the operations must be performed in the specific order, or that all the operations shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0114] Based on the above invention concept, Figure 6 As shown, the present invention also proposes a computer device 600, including a memory 610, a processor 620, and a computer program 630 stored in the memory 610 and executable on the processor 620, wherein the processor 620 implements the aforementioned GSM-R interference source automatic identification method when executing the computer program 630.

[0115] Based on the aforementioned inventive concept, the present invention proposes a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the aforementioned GSM-R interference source automatic identification method is implemented.

[0116] Based on the aforementioned inventive concept, the present invention proposes a computer program product, wherein the computer program product comprises a computer program, and when the computer program is executed by a processor, a method for automatically identifying a GSM-R interference source is implemented.

[0117] The present invention receives radio signals along the railway through a GSM-R dedicated antenna and an array antenna installed on the roof of a dynamic detection vehicle, pre-processes the radio signals using a frequency sweeper, a real-time spectrum analyzer and a multi-channel receiver, and then identifies interference sources that affect the normal operation of GSM-R through a GSM-R interference source automatic identification algorithm, and displays interference source related information on a display. The overall solution can identify a variety of GSM-R interferences, improve the efficiency and ability of interference source identification, promote the construction of a stable and orderly radio wave order along the railway, and effectively ensure the safety of railway communications.

[0118] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0119] The present invention is described with reference to flowcharts and / or block diagrams of methods and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0120] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0121] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0122] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A device for automatically identifying GSM-R interference sources, characterized in that: include: Uniform circular array antenna, GSM-R dedicated antenna, multi-channel receiver, power divider, frequency sweep processing module, real-time spectrum processing module, real-time processing unit, system controller and system display; Among them, The uniform circular array antenna and the GSM-R dedicated antenna are used to receive radio signals along the railway; The multi-channel receiver is connected to the uniform circular array antenna and is used to transmit the radio signal received by the uniform circular array antenna to the real-time processing unit; The power divider is connected to the GSM-R dedicated antenna and is used to divide the radio signal received by the GSM-R dedicated antenna into signal I and signal II, input signal I to the frequency sweep processing module, and input signal II to the real-time spectrum processing module; The frequency sweep processing module is used to perform frequency sweep processing on the signal I and send the frequency sweep processing result to the real-time processing unit; The real-time spectrum processing module is used to perform real-time spectrum processing on the signal II and send the real-time spectrum processing result to the real-time processing unit; The real-time processing unit is used to receive the time-space positioning information and obtain the current cell carrier frequency configuration information through the basic database; According to the time-space positioning information, carrier frequency configuration information and the radio signal received by the uniform circular array antenna, the adjacent GSM-R cell is identified, the multipath signal of the adjacent cell is monitored, and the multipath monitoring result is obtained; Identify interference signals based on frequency scanning processing results, real-time spectrum processing results, multipath monitoring results, and carrier frequency configuration information to obtain interference identification results; Send the current position information of the dynamic detection vehicle and the interference identification result to the system controller; The system controller is used to mark the interference source information on the map and display it in real time through the system display.

2. The device according to claim 1, characterized in that The uniform circular array antenna and the GSM-R dedicated antenna are installed on the roof of the dynamic detection vehicle, the uniform circular array antenna is connected to the multi-channel receiver through a feeder, and the GSM-R dedicated antenna is connected to the power divider through a feeder; The uniform circular array antenna is an antenna array consisting of eight antennas, each antenna is arranged on a circle at equal intervals, and the angle between array elements is 45 degrees.

3. The device according to claim 2, characterized in that The multi-channel receiver has a multi-channel radio frequency signal receiving and processing function and is used for synchronously collecting signals of eight channels.

4. The device according to claim 1, characterized in that The frequency scanning processing module is a GSM-R cell broadcast message decoding device, which obtains cell information by demodulating and decoding the radio signal received by the antenna, wherein the cell information at least includes MCC, MNC, LAC, CI, and frequency point number information.

5. The device according to claim 1, characterized in that The real-time spectrum processing module is a spectrum analyzer, which is used to sample the input signal and perform spectrum analysis on the sampled signal. The time of spectrum analysis is shorter than the time of signal sampling.

6. The device according to claim 1, characterized in that The real-time processing unit uses a direction-of-arrival estimation algorithm to monitor multipath signals in neighboring cells.

7. A method for automatically identifying GSM-R interference sources, characterized in that: include: Use uniform circular array antennas and GSM-R dedicated antennas to receive radio signals along the railway; A real-time multi-channel receiver is connected to the uniform circular array antenna and transmits the radio signal received by the uniform circular array antenna to the real-time processing unit; The power divider is connected to the GSM-R dedicated antenna, divides the radio signal received by the GSM-R dedicated antenna into signal I and signal II, inputs signal I to the frequency sweep processing module, and inputs signal II to the real-time spectrum processing module; The frequency sweep processing module performs frequency sweep processing on the signal I and sends the frequency sweep processing result to the real-time processing unit; The real-time spectrum processing module performs real-time spectrum processing on the signal II and sends the real-time spectrum processing result to the real-time processing unit; The real-time processing unit receives the time-space positioning information and obtains the current cell carrier frequency configuration information through the basic database; According to the time-space positioning information, carrier frequency configuration information and the radio signal received by the uniform circular array antenna, the adjacent GSM-R cell is identified, the multipath signal of the adjacent cell is monitored, and the multipath monitoring result is obtained; Identify interference signals based on frequency scanning processing results, real-time spectrum processing results, multipath monitoring results, and carrier frequency configuration information to obtain interference identification results; Send the current position information of the dynamic detection vehicle and the interference identification result to the system controller; The system controller identifies the interference source information on the map and displays it in real time through the system display.

8. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method of claim 7 is implemented.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method of claim 7 is implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the method according to claim 7 is implemented.

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