Abstract
In this paper, we consider the problem of detecting the echo from a point target in the presence of reverberation. For its strong correlation to the transmitted signal and non-Rayleigh envelope arising from sparse distribution of scatterers, reverberation decreases the performance of the conventional matched filter (MF) receiver. We propose a nonlinear receiver using the bistable system with a discrete-time autoregressive model of order 1 [AR(1)]. The signals are pre-processed by bistable systems before the MF receiver. Numerical simulations are carried out to verify the performance of our proposed nonlinear receiver versus the conventional MF receiver. The reverberation is generated using the point-scatterer simulation method, and the results show that in reverberation-limited environment, our proposed nonlinear receiver may perform better and much more robust to the scatterer number than the conventional MF receiver.
| Original language | English (US) |
|---|---|
| Journal | Fluctuation and Noise Letters |
| Volume | 8 |
| Issue number | 3-4 |
| State | Published - Dec 2008 |
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Keywords
- Bistable system
- Non-Rayleigh reverberation
- Stochastic resonance
- Target detection
ASJC Scopus subject areas
- Mathematics(all)
- Physics and Astronomy(all)
Cite this
Improving target detection in reverberation-limited environment via bistable system. / Zhang, Huiquan; Xu, Bohou; Jiang, Zhong-Ping; Li, Jianlong.
In: Fluctuation and Noise Letters, Vol. 8, No. 3-4, 12.2008.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Improving target detection in reverberation-limited environment via bistable system
AU - Zhang, Huiquan
AU - Xu, Bohou
AU - Jiang, Zhong-Ping
AU - Li, Jianlong
PY - 2008/12
Y1 - 2008/12
N2 - In this paper, we consider the problem of detecting the echo from a point target in the presence of reverberation. For its strong correlation to the transmitted signal and non-Rayleigh envelope arising from sparse distribution of scatterers, reverberation decreases the performance of the conventional matched filter (MF) receiver. We propose a nonlinear receiver using the bistable system with a discrete-time autoregressive model of order 1 [AR(1)]. The signals are pre-processed by bistable systems before the MF receiver. Numerical simulations are carried out to verify the performance of our proposed nonlinear receiver versus the conventional MF receiver. The reverberation is generated using the point-scatterer simulation method, and the results show that in reverberation-limited environment, our proposed nonlinear receiver may perform better and much more robust to the scatterer number than the conventional MF receiver.
AB - In this paper, we consider the problem of detecting the echo from a point target in the presence of reverberation. For its strong correlation to the transmitted signal and non-Rayleigh envelope arising from sparse distribution of scatterers, reverberation decreases the performance of the conventional matched filter (MF) receiver. We propose a nonlinear receiver using the bistable system with a discrete-time autoregressive model of order 1 [AR(1)]. The signals are pre-processed by bistable systems before the MF receiver. Numerical simulations are carried out to verify the performance of our proposed nonlinear receiver versus the conventional MF receiver. The reverberation is generated using the point-scatterer simulation method, and the results show that in reverberation-limited environment, our proposed nonlinear receiver may perform better and much more robust to the scatterer number than the conventional MF receiver.
KW - Bistable system
KW - Non-Rayleigh reverberation
KW - Stochastic resonance
KW - Target detection
UR - http://www.scopus.com/inward/record.url?scp=73549083240&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=73549083240&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:73549083240
VL - 8
JO - Fluctuation and Noise Letters
JF - Fluctuation and Noise Letters
SN - 0219-4775
IS - 3-4
ER -