基于子波濾波的并行分布式檢測融合算法分析
Optimal distributed detection fusion analysis with parallel topology based on wavelet domain filter
-
摘要: 將軟閾值決策子波域濾波算法與多傳感器并行分布式檢測融合系統(tǒng)有機地結合在一起，提出了多傳感器并行分布式檢測系統(tǒng)在Neyman-Pearson(N-P)準則下融合規(guī)則和局部判決規(guī)則之間相互關系的理論分析方法，完整地給出了兩種次最佳系統(tǒng)和全局最佳系統(tǒng)判決規(guī)則的理論推導，并藉此理論對以上3種系統(tǒng)進行了瑞利噪聲環(huán)境下的仿真，結果表明子波域濾波算法和多傳感器并行分布式檢測融合系統(tǒng)的同時引入明顯提高了雷達探測系統(tǒng)的檢測性能。Abstract: This paper presents a theoretical analysis in the sense of the Neyman-Pearson (N-P) test about the relationship between fusion rule and local decision rules in the parallel distributed detection fusion system with multiple sensors. It combines wavelet filter based on soft-threshold with the parallel distributed detection fusion system with multiple sensors ideally, and derives the determination of decision rules of two sub-optimal systems and globally optimal system completely. The detection performances of three systems above are computed numerically for the problem of detecting a known signal embeded in Rayleigh noise. The results obtained indicate that the presented method can enhance the radar detection performance remarkably.
-
E. Waltz, J. Llina, Multisensor Data Fusion, Boston: Artech House, 1990, Chapter 1-12.[2]Y. Yu, J. B. Weaver, et al., Wavelet transform domain filters: a spatial selective noise filteration technique, IEEE Trans. on Image Processing, 1994, IP-3(6), 747-757.[3]D.L. Donoho, De-noising by soft-thresholding, IEEE Trans. on IT, 1995, IT-41(3), 612-627.[4]R. Viswanathan, P. K. Varshney, Distributed detection with multiple sensors: Part I Fundamentals, Proc. IEEE, 1997, 85(1), 54-63.[5]R. Srinivasan, Distributed radar detection theory, IEE Proc.-F, 1986, 133(1), 55-60.[6]S.C.A. Thomopoulos, Optimal distributed decision fusion, IEEE Trans. on Aerospace and Electronic Systems, 1989, AES-25(5), 761-765.[7]G. Polychronopoulos, N. Tsitsiklis, Explicit solutions for some simple decentralized detection problems, IEEE Trans. on Aerospace and Electronic Systems, 1991, AES-26(2), 282-292.[8]R.S. Blum, Necessary conditions for optimum distributed sensor detectors under the NeymanPearson criterion, IEEE Trans. on IT, 1996, IT-42(3), 990-994. -
計量
- 文章訪問數: 2130
- HTML全文瀏覽量: 97
- PDF下載量: 523
- 被引次數: 0
下載:
