Double‐threshold CFAR detector in presence of subspace interference for MIMO radar
| Autor: | Qinzhen Hu, Shenghua Zhou, Hongtao Su, Zhihua Li |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer science
Detector MIMO 020206 networking & telecommunications 02 engineering and technology Interference (wave propagation) Object detection Constant false alarm rate law.invention law Signal Processing 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Detection theory Electrical and Electronic Engineering Radar Algorithm Diversity scheme |
| Zdroj: | IET Signal Processing. 14:72-80 |
| ISSN: | 1751-9683 1751-9675 |
| DOI: | 10.1049/iet-spr.2018.5226 |
| Popis: | In this study, a constant false alarm rate (CFAR) decision scheme is devised for frequency diversity multiple-input-multiple-output (MIMO) radar. Under the assumption that there exists not only the unstructured disturbance but also the structured interference, a double threshold detector (DT-MGLRT) based on the modified generalised likelihood ratio test (MGLRT) algorithm is proposed, of which the first stage deals with the unknown parameters and the second stage determines the final decision. It is proved that the proposed detector possesses a CFAR with respect not only to the unknown spectral properties of the unstructured disturbance but also to the structured interference distribution. Finally, some experiment results indicate that the proposed detection algorithm has 2 dB signal-to-interference-plus-noise power ratio improvement on average in detection performance at a low computation and communication cost over conventional detection algorithms. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text