LÜ Jindong, WANG Tong, TANG Xiaobin. Semi-supervised SAR Ship Target Detection with Graph Attention Network[J]. Journal of Electronics & Information Technology, 2023, 45(5): 1541-1549. doi: 10.11999/JEIT220139
Citation:
Guan Jian, He You. PERFORMANCE ANALYSIS OF TWO CFAR DETECTORS UNDER CLUTTER EDGE SITUATION[J]. Journal of Electronics & Information Technology, 1996, 18(3): 243-248.
LÜ Jindong, WANG Tong, TANG Xiaobin. Semi-supervised SAR Ship Target Detection with Graph Attention Network[J]. Journal of Electronics & Information Technology, 2023, 45(5): 1541-1549. doi: 10.11999/JEIT220139
Citation:
Guan Jian, He You. PERFORMANCE ANALYSIS OF TWO CFAR DETECTORS UNDER CLUTTER EDGE SITUATION[J]. Journal of Electronics & Information Technology, 1996, 18(3): 243-248.
This paper studies the performances of the GOSGO (Generalised Order Statistics and Greatest Of)-- and GOSSO (Generalised Order Statistics and Smallest Of)--CFAR detectors under clutter edge situation. The analytic expressions of false alarm probabilities under clutter edge situation are derived. Their performances to counter clutter edge are analysed, and compared them with the OS(Order Statistics), CA(Cell Averaging), GO(Greatest Of) and SO(Smallest Of) detectors. Results show that GOSGO possesses the better performance than GO for countering clutter edge. But the performance of GOSSO is not good.
针对生存性EONs中时变业务的路由和频谱分配问题,本文提出一种基于频谱窗滑动的时变业务共享保护(Time-varying Traffic Sharing Protection based on Spectrum Window Sliding, TTSP-SWS)算法。TTSP-SWS算法的贡献在于:(1)设计考虑可用频谱块承载权重和保护频谱块共享度的保护路径代价函数,用于选择时变业务的保护路径;(2)设计基于频谱窗滑动的保护路径的频谱分配策略为时变业务分配所需频谱块;(3)根据时变业务带宽变化情况,设计基于频谱窗滑动的频谱扩展/压缩的调整策略。
2.
问题描述
EONs拓扑抽象为G(V, E, F),其中,V表示EONs节点集合,E表示光纤链路集合,F表示每条链路提供的频隙资源集合。时变业务表示为r(s, d, B, q),其中,s,d分别表示时变业务的源、目的节点,B表示时变业务所需带宽,q表示时变业务需要的保护等级。
为了验证本文所提TTSP-SWS算法的性能,本文分别对DSPRA-DPP[16], DSPRA-SBPP[16]和FMDA-RSA[17]生存性策略在图1所示的国家科学基金网(National Science Foundation Network, NSFNET)和美国网络(United States of America Network, USNET)拓扑[17]中的业务阻塞率、保护冗余度和频谱使用率性能进行仿真,其中,NSFNET拓扑具有14个节点,21条链路,USNET拓扑包含24个节点,43条链路[17],设K=3,业务间保护频隙GB=1 fs,图1的链路旁边数字表示节点之间的物理长度,单位km。其他默认仿真主要参数如表1。
Finn H M, Jhonson R S. RCA Rev., 1968, 29(9): 414-463.[2]Hansen V G. Constant false alarm rate processing in search radars. In Proceedings of IEEE 1973 International Radar Conference, London: 1973, 325-332.[3]dunk G V. IEEE Trans. on AES, 1978, AES-14(5): 750-755.[4]Rohling H. IEEE Trans. on AES, 1983, AES-19(4): 608-621.[5]何友,Rohling H.电子科学学刊,1994,16(6): 582-590.[6]Wilson S L. IEEE Trans. on AES, 1993, AES-29(1): 57-72.[7]Gandhi P P, Kassam S A. IEEE Trans. on AES, 1988, AES-24(4): 427-445.[8]关健.几种新的CFAR检测器在干扰边缘环境中的性能:[硕士学位论文].烟台:海军航空工程学院电子工程系,1994.