Open AccessTracking fluctuating targets in extremely heterogeneous clutter using amplitude information
Author(s) -
Li Feng,
Zhuo Bangsheng,
Peng Xiangjun,
Cheng Miaomiao,
Yao Di
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0722
Subject(s) - clutter , radar , tracking (education) , algorithm , computer science , track before detect , amplitude , secondary surveillance radar , radar tracker , physics , optics , telecommunications , pedagogy , psychology
This study analyses the radar fluctuating target detection in G 0 ‐distributed clutter using dynamic programming – track before detect (DP‐TBD) algorithm. G 0 ‐distributed clutter is often used to fit the complex circumstances. The authors use chi‐square distribution to model the fluctuating targets. The log‐likelihood ratio (LLR) is taken as the scoring function of DP‐TBD. This study makes contribution to simplify the double integral into single integral in LLR and applies numerical integration with variable resolution to evaluating the LLR. Simulations prove the simplified integral equals the original integral and using LLR in DP‐TBD is able to improve the performance of detecting fluctuating targets in G 0 ‐distributed clutter.