一种改进的星载AIS信号侦收算法

在分析传统侦收船舶自动识别系统( AIS)信号严重依赖全球定位系统( GPS)不足的基础上, 提出了 一种改进的侦收算法,利用同步序列的实时相关运算实现AIS信号的检测并达到位同步, 进 而完成解调侦收.改进后的算法不再需要GPS系统的辅助, 简化了设计降低了成本, 在 13 d B的信 噪比下误包率可以达到5% 以下....

Full description

Saved in:
Bibliographic Details
Published in电讯技术 Vol. 56; no. 9; pp. 1034 - 1038
Main Author 饶坤
Format Journal Article
LanguageChinese
Published 中国西南电子技术研究所,成都,610036 2016
Subjects
Online AccessGet full text
ISSN1001-893X
DOI10.3969/j.issn.1001-893x.2016.09.015

Cover

More Information
Summary:在分析传统侦收船舶自动识别系统( AIS)信号严重依赖全球定位系统( GPS)不足的基础上, 提出了 一种改进的侦收算法,利用同步序列的实时相关运算实现AIS信号的检测并达到位同步, 进 而完成解调侦收.改进后的算法不再需要GPS系统的辅助, 简化了设计降低了成本, 在 13 d B的信 噪比下误包率可以达到5% 以下.
Bibliography:Through analyzing the disadvantage of traditional automatic identification system ( AIS) signal re-connaissance depending heavily on global positioning system(GPS), this paper presents an improved algo-rithm which realizes AIS signal detection and bit synchronization according to the correlation result of syn-chronisation sequence in real time,and demodulates AIS signal successively. The improved algorithm doesn't need to use GPS,resulting in a more simplified design and a lower cost. The package error rate (PER) is less than 5% at the signal-to-noise ratio of 13 dB.
RAO Kun(Southwest China Institute of Electronic Technology,Chengdu 6 1 0 0 3 6, China)
automatic identification system; signal detection;bit synchronization;demodulation reconnaissance
51-1267/TN
ISSN:1001-893X
DOI:10.3969/j.issn.1001-893x.2016.09.015