Method for improving air traffic control primary radar monitoring efficiency through multi-station cooperation

Abstract

Air traffic control primary surveillance radars are mostly deployed in ground fixed stations, and for single air traffic control primary radars, the target surveillance efficiency is inevitably insufficient due to the limitation of the deployment positions, the technical characteristics and the like of the single air traffic control primary radars. The invention provides a method for simultaneous detection and cooperative monitoring of multiple air traffic control primary radars aiming at the defects of single air traffic control primary radars in the aspect of target monitoring efficiency, two or more primary radars form a cluster, and the radars perform data support mutually, so that each radar can better monitor a target. A plurality of air traffic control primary radars capable of detecting at the same time implement cooperative monitoring, and the monitoring efficiency of the radars can be remarkably improved, including: 1) the same target can be continuously tracked; 2) smooth transition of the tracking track; 3) the target data is not easy to lose; and 4) the target track is more stable.

Description

Technical Field

[0001] The invention belongs to the field of radar technology, and in particular relates to a method for improving the monitoring efficiency of air traffic control primary radar through multi-station collaboration. Background Art

[0002] Most of the primary surveillance radars for air traffic control are deployed at ground fixed stations. For a single primary radar, due to the limitations of its deployment location and its own technical characteristics, there are inevitably deficiencies in target surveillance performance: 1) In the diffraction area, the target azimuth is prone to splitting, resulting in a decrease in azimuth detection accuracy; 2) In the long-distance detection area, the azimuth detection accuracy of the target is low; 3) In the shielded area caused by the geographical environment and the radar's own blind spot, there is no detection data, resulting in target loss; 4) Due to the existence of electromagnetic wave reflection, surround and external electromagnetic wave interference, the radar outputs false targets. Summary of the invention

[0003] Aiming at the shortcomings of a single air traffic control primary radar in terms of target monitoring efficiency, the present invention proposes a method for simultaneous detection and coordinated monitoring of multiple air traffic control primary radars, wherein two or more primary radars form a cluster, and the radars provide data support to each other, so that each radar can better monitor the target. The coordinated monitoring of multiple air traffic control primary radars that detect simultaneously can significantly improve the monitoring efficiency of the radars, including: 1) continuous tracking of the same target; 2) smooth transition of the tracking track; 3) target data is not easily lost; 4) the target track is more stable.

[0004] The method of the present invention improves the integrity and accuracy of target monitoring data of a single radar by exchanging information and fusing data of multiple air traffic control primary radars. At the same time, the difference of monitoring data of the same target by different radars is utilized to further improve the track tracking accuracy of each radar. It mainly includes the following steps:

[0005] 1) Cluster collaborative management

[0006] Through cluster management, radar entry and exit are realized, and cluster status and architecture are adjusted in real time to ensure that the cluster coordination status is dynamically stable and data operations are compliant.

[0007] 2) Cluster collaborative monitoring

[0008] The target monitoring data of each radar is aggregated in the cluster and dynamically distributed to each participating node for target monitoring processing through cluster collaborative management. Radar nodes use collaborative monitoring data to output high-quality radar signals based on their own monitoring tasks.

[0009] 3) Cluster data fusion processing

[0010] A single radar uses cluster collaborative management information to achieve coordinate conversion, time alignment, determine association status, and perform target maintenance.

[0011] 4) Target status management

[0012] Target status management establishes a status table for each target monitored by the cluster collaboratively, including the status of the target in this radar node and other radar nodes.

[0013] A method for improving the monitoring efficiency of air traffic control primary radar by multi-station collaboration of the present invention realizes collaborative monitoring software and cluster control through the following modules:

[0014] Add a communication interface module to complete the maintenance of the communication link between the collaborative monitoring software and all other software.

[0015] Add a network management module and use the Network Monitoring Protocol (NMP) to monitor the network in real time.

[0016] Add a target monitoring module to monitor all targets uniformly.

[0017] Add data fusion module to track the target.

[0018] Add a system maintenance module to record exception handling logs and error logs.

[0019] When collaborative monitoring is started, the communication interface module begins to establish connections with other nodes in the cluster, parses the received data, and forwards it to other processing modules according to the data type.

[0020] The system maintenance module can record and track the main working information of the system in order to analyze and locate problems. The recorded content includes information type, information source, recording time, main content, etc. All information is divided into three categories according to the importance: fault information, alarm information and general information.

[0021] The beneficial effects of the present invention are

[0022] 1. Single radar has higher monitoring efficiency: Through the coordinated monitoring of multiple radar clusters, the azimuth accuracy of single radar target monitoring can be improved, the target track of a single radar can be kept continuous, and the false alarm rate of a single radar can be reduced.

[0023] 2. Better utilization of radar monitoring data: The method of the present invention can realize comprehensive and effective utilization of cluster data, optimize cluster layout at the data level according to the needs of monitoring tasks, and thus improve radar monitoring efficiency.

[0024] 3. Easy to implement, low cost, and strong scalability: The method proposed in the present invention does not change the main equipment composition of the air traffic control primary radar, has typical open and reconfigurable features, and can be widely used in various types of domestic air traffic control primary radars. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a diagram of the basic architecture for cluster collaborative monitoring.

[0026] Figure 2 Main flow chart for cluster collaborative monitoring.

[0027] Figure 3 This is the main flow chart for collaborative surveillance of a single radar.

[0028] Figure 4 Flowchart of the target monitoring process.

[0029] Figure 5 Figure 3. Data fusion processing for cluster monitoring.

[0030] Figure 6 This is a comparison chart of the performance of independent monitoring and cluster collaborative monitoring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] A method for improving the monitoring efficiency of air traffic control primary radar by multi-station collaboration of the present invention has the following process steps:

[0033] 1) Topology management

[0034] Collaborative monitoring (or cluster control) periodically monitors the topology of the cluster system, detects and determines the network topology and stability in real time. Each working state has a corresponding solution list, which specifies the effective area and the collaborative configuration of the radar.

[0035] 2) Target status update

[0036] Cluster control completes the following operations based on node data:

[0037] (a) Track start.

[0038] (b) Track update.

[0039] (c) Track extrapolation.

[0040] (d) The track disappears.

[0041] 3) Regional data fusion processing

[0042] Cluster monitoring data fusion processing flow is as follows Figure 5 Cluster control or cooperative monitoring performs coordinate conversion and time alignment, and then performs track association.

[0043] (a) Data alignment

[0044] Before performing track fusion, the arrival times of all targets need to be aligned to the latest processing time.

[0045] (b) Multi-radar data fusion

[0046] The present invention adopts an improved multi-point positioning method to effectively improve the azimuth accuracy of the target.

[0047] 4) Monitoring effectiveness analysis

[0048] The performance analysis of the real historical data of multiple radars operating independently was carried out, and the semi-physical simulation demonstration of multi-station collaborative monitoring was carried out using the method of the present invention. Figure 6 Shown is a comparison of the performance of independent monitoring and cluster collaborative monitoring. Figure 6 In the figure, each color curve except red represents an independently operated ATC primary radar, which is the monitoring effectiveness analysis result of a single radar; the red line is the monitoring effectiveness analysis result after cluster collaborative monitoring of these radars according to the method of the present invention. It can be seen that after adopting the method of the present invention, the target monitoring accuracy is significantly improved, the monitoring data quality is more stable, and the overall monitoring effectiveness of the radar is improved.

[0049] The present invention is not limited to the above specific implementations, and the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made to the above implementations based on the technical essence of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for improving the monitoring efficiency of air traffic control primary radar by multi-station collaboration, characterized in that: The steps include: 1) Cluster collaborative management Through cluster management, radar entry and exit are realized, and cluster status and architecture are adjusted in real time to ensure that cluster coordination status is dynamic and stable and data operation is compliant with regulations; 2) Cluster collaborative monitoring The target monitoring data of each radar is collected in the cluster and dynamically distributed to each participating node through cluster collaborative management for target monitoring processing. Radar nodes use collaborative monitoring data to output high-quality radar signals based on their own monitoring tasks; 3) Cluster data fusion processing A single radar uses cluster collaborative management information to achieve coordinate conversion, time alignment, determine association status, and perform target maintenance; 4) Target status management Target status management establishes a status table for each target monitored by the cluster collaboratively, including the status of the target in this radar node and other radar nodes.

2. The method for improving the monitoring efficiency of air traffic control primary radar by multi-station collaboration according to claim 1 is characterized in that: The method achieves collaborative monitoring and cluster control by adding functional modules: By adding a communication interface module, the maintenance of the communication link for collaborative monitoring is completed; By adding a network management module and using a network monitoring protocol, the network can be monitored in real time. By adding a target monitoring module, all targets can be monitored uniformly; By adding a data fusion module, the target can be tracked; By adding a system maintenance module, exception handling logs and error logs are recorded.

3. The method for improving the monitoring efficiency of air traffic control primary radar by multi-station collaboration according to claim 2 is characterized in that: When collaborative monitoring is started, the communication interface module begins to establish connections with other nodes in the cluster, parses the received data, and forwards it to other modules according to the data type.

4. The method for improving the monitoring efficiency of air traffic control primary radar by multi-station collaboration according to claim 3 is characterized in that: The system maintenance module can record and track work information in order to analyze and locate problems; the recorded content includes information type, information source, recording time, and main content; all information is divided into three categories according to its importance: fault information, alarm information, and general information.

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