Target movement situation information data association strategy-based target tracking method

A technology of information data and target tracking, applied in the direction of radio wave reflection/re-radiation, using re-radiation, measuring devices, etc., can solve problems such as certain difficulty, large amount of algorithm calculation and storage

Active Publication Date: 2016-12-21
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology

However, the number of hypothetical track branches generated by the MHT algorithm has an exponentially rising relationship with the false alarm rate, the number of targets, and the numb

Method used

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  • Target movement situation information data association strategy-based target tracking method
  • Target movement situation information data association strategy-based target tracking method
  • Target movement situation information data association strategy-based target tracking method

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Embodiment Construction

[0083] The first step is to combine figure 1 Explain the process of creating the track to be selected. Search for trace information within a circular area with the tracking target A as the center and r as the radius. Among them, the search radius r is related to the radar antenna period. The longer the radar antenna period, the larger the search radius. Under normal circumstances, you can set 1~7Km according to the tracking target position. If the point trail falls into this area, create the candidate target track; otherwise, do not create the candidate target track. (The radar is susceptible to clutter, target and other factors in the process of detecting the target. At the same time, multiple traces will appear in the target tracking gate. figure 1 The meaning of the two t1 moments is that at the same moment, two traces appear in the target gate at the same time, and the two traces have the same time. In the same way, there are two traces at t3. )

[0084] The second ste...

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Abstract

The invention discloses a target movement situation information data association strategy-based target tracking method. The method includes the following steps that: step 1, the track of a target to be selected is created; step 2, tracking processing is carried out on the track of the target to be selected, a reasonable track of a formal target is established according to a target starting condition; and step 3, a Kalman filtering model is used to carry out filtering estimation processing on the tracks of a tracked target and the formal target, so that a track state estimation value can be obtained, the time to closest point of approach (TCPA) of the tracked target and the formal target is calculated according to a ship collision avoidance radar measurement model and a TCPA value is compared with a target separation time threshold, a target approach time threshold and a target overlap time threshold, so that the movement state information of the targets can be obtained; and step 4, and the association strategy and associated algorithm of the trace points and tracks of the tracked target are determined according to the movement state information of the targets, and the association relation of the tracked target and the trace points can be obtained.

Description

Technical field [0001] The invention belongs to radar target tracking technology, and particularly relates to a target tracking method based on a target movement situation information data association strategy. Background technique [0002] The data association process is the process of determining the corresponding relationship between the measurement information received by the sensor and the target source, which runs through the target start, target maintenance and target end processes. At present, data association algorithms commonly used in engineering include two categories. The first category is to study the latest measurement collections. For example, Singer and Sea proposed the optimal proximity algorithm. The basic principle selects the trace closest to the target predicted position as Association point. When the target signal-to-noise ratio is high or the target is sparse, the tracking effect of this algorithm is better. The low-resolution radar has a wide detection ...

Claims

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Application Information

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IPC IPC(8): G01S13/66G01S7/41
CPCG01S7/41G01S13/66
Inventor 郑浩常传文翟海涛萨出拉白俊奇商凯刘文陈硕顾晶
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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