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Track-Before-Detect for Dim Targets

In: Target Tracking with Random Finite Sets

Author

Listed:
  • Weihua Wu

    (Air Force Early Warning Academy)

  • Hemin Sun

    (Air Force Early Warning Academy)

  • Mao Zheng

    (Air Force Early Warning Academy)

  • Weiping Huang

    (Air Force Early Warning Academy)

Abstract

Track-before-detect (TBD) is an effective technique used for detection and tracking of dim targets. This technique does not claim the detection result regarding the presence or absence of a target based on the single-frame data. Instead, it firstly tracks a target according to hypothetical potential paths in the multi-frame data, filters clutters and constantly accumulates the target energy based on different characteristics of target echo, clutter and noise, and estimates the target trajectory at the time of target detection. Since the TBD sets no threshold or merely sets a lower threshold for the single-frame data, information of dim targets is retained as much as possible, thus avoiding the target loss problem faced by the traditional detect-before-track (DBT) method. From the perspective of the energy utilization, the TBD integrates detection and tracking. In this way, both single scanning pulse train coherent integration and inter-scanning non-coherent integration are used to improve the energy utilization efficiency. Therefore, the TBD is able to improve the capability of radar to detect dim and small targets.

Suggested Citation

  • Weihua Wu & Hemin Sun & Mao Zheng & Weiping Huang, 2023. "Track-Before-Detect for Dim Targets," Springer Books, in: Target Tracking with Random Finite Sets, chapter 0, pages 283-296, Springer.
    • Handle: RePEc:spr:sprchp:978-981-19-9815-7_10
    DOI: 10.1007/978-981-19-9815-7_10
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