A constant false alarm rate frame detector for satellite-based automatic identification system

被引：3
|
作者：
Zhou, Haosu [1 ]
Wang, Jianxin [1 ]
Zhang, Peixin [1 ]
Ban, Tian [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Jiangsu, Peoples R China
来源：
INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING | 2018年 / 36卷 / 01期
基金：
美国国家科学基金会;
关键词：
frame detection; satellite-based automatic identification system (AIS); constant false alarm rate (CFAR); message collisions; FREQUENCY OFFSET; SYNCHRONIZATION; NONCOHERENT; RECEIVER;
D O I：
10.1002/sat.1189
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Frame detection is an important step in satellite-based automatic identification system for its contributions in verifying the presence of automatic identification system signal before frame synchronization. In this paper, a constant false alarm rate frame detector is proposed, which exploits the feature implied in the training sequence, to realize frame detection in the presence of additive white Gaussian noise and frequency offset. False alarm probability is related with a threshold, which is independent of the signal and noise. For fixed false alarm probability, the relationship between detection performance and E-b/N-0 is analyzed. Simulations prove that the proposed detector outperforms the detector based on cyclic autocorrelation when message collisions exist. Copyright (c) 2016 John Wiley & Sons, Ltd.
引用
收藏
页码：1 / 13
页数：13
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