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Foundation surveillance radar multi-target tracking method based on radial velocity information

A multi-target tracking and radial velocity technology, applied in the direction of reflection/re-radiation of radio waves, utilization of re-radiation, measurement devices, etc. Improve the effect of tracking

Active Publication Date: 2018-07-20
长沙深之瞳信息科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The existing multi-hypothesis tracking algorithm uses the position information of the target and false alarms obtained by each frame echo to perform correlation filtering to form a track. However, when there are too many false alarms caused by clutter, the algorithm often generates too many low-quality hypotheses. , leading to poor real-time performance of the system, and seriously even causing correlation errors and filtering divergence

Method used

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  • Foundation surveillance radar multi-target tracking method based on radial velocity information
  • Foundation surveillance radar multi-target tracking method based on radial velocity information
  • Foundation surveillance radar multi-target tracking method based on radial velocity information

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Embodiment

[0045] Such as figure 1As shown, a kind of ground-based surveillance radar multi-target tracking method based on radial velocity information provided by the present invention comprises the following steps:

[0046] Step S1, using the radial velocity to calculate the track fitting degree:

[0047] Assume that the measurement data set obtained by the kth scan is Z(K):

[0048]

[0049] Indicates the i-th measurement obtained by the radar at the k-th scan, m k is the total number of measurements obtained in the kth scan, N represents the total number of scans, i=0 represents missed detection, and the radial velocity of each measurement is expressed by express;

[0050] Assuming that a certain track already exists at time k-1:

[0051]

[0052] Where x is the estimated result of each track at time k-1, j represents the j-th hypothesis, m represents the m-th track in the j-th hypothesis, and M is the number of tracks of the j-th hypothesis;

[0053] for track Suppos...

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Abstract

The invention discloses a foundation surveillance radar multi-target tracking method based on radial velocity information. The foundation surveillance radar multi-target tracking method based on radial velocity information includes the following steps: S1, calculating the track fitting degree by means of radial velocity; S2, generating hypothesis by means of the radial velocity fitting degree andthe positional information; S3, modifying the track scores of the first k optimal hypothesis by means of the radial velocity fitting degree, and obtaining the hypothesis probability pj of each hypothesis in the first k optimal hypothesis; S4, establishing a hypothesis tree according to the first k optimal hypothesis, based on the principle of selecting the root node in which the hypothesis probability pj is, performing pruning on the hypothesis tree by means of an N pruning algorithm, and leaving the optimal hypothesis to be determined; and S5, according to a preset determination threshold T1and a preset delete threshold T2, comparing the track scores of the optimal hypothesis to be determined in the step S4 with the determination threshold T1 and the delete threshold T2, so as to determine the track or delete the track. The foundation surveillance radar multi-target tracking method based on radial velocity information can realize inhibition of false tracks and false alarm in a strongclutter and high false alarm environment, and can greatly improve the radar multi-target tracking effect.

Description

technical field [0001] The invention belongs to the technical field of new system radar tracking, and in particular relates to a ground-based surveillance radar multi-target tracking method based on radial velocity information, which can significantly improve the false alarm suppression and multi-target tracking effect of the ground-based surveillance radar in a strong clutter environment . Background technique [0002] Radar is a device that detects targets through electromagnetic waves. The radar multi-target tracking technology uses the electromagnetic wave echoes received by the receiver to calculate the target azimuth, elevation angle, radial distance and other information, and use these information to perform data analysis on the target. Key processes such as correlation and filtering estimation to obtain accurate information status of the target. Through these target information, commanders and fighters can well estimate the battlefield situation. Compared with area...

Claims

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Application Information

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IPC IPC(8): G01S7/41G01S13/72
CPCG01S7/41G01S13/726
Inventor 刘忠焦润之邓峰彭志伟蒋伟明
Owner 长沙深之瞳信息科技有限公司
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