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....
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| Published in | 电讯技术 Vol. 56; no. 9; pp. 1034 - 1038 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国西南电子技术研究所,成都,610036
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-893X |
| DOI | 10.3969/j.issn.1001-893x.2016.09.015 |
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| 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. |
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| 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 |