| 摘要: |
| 针对海事自动识别系统（Automatic Identification System，AIS）收发信机的信号
处理主要采用专用芯片实现的现状，提出了一种中频数字化的替代方案,采用FPGA
完成AIS中频收发信机的信号处理。重点研究了突发GMSK中频信
号的调制、差分解调、位同步和帧同步的设计方法及实现过程。测试结果表明，采用并行化
的数字信号处理，增强了设备的灵活性和可靠性，并提高了设备的性能。 |
| 关键词: 自动识别系统 收发信机 中频数字化 并行数字信号处理 |
| DOI：10.3969/j.issn.1001-893X. |
|
| 基金项目: |
|
| Design and Implementation of an AIS IF Transceiver Based on FPGA |
| ZHENG Li,ZHONG Jie |
| (Southwest China Institute of Electronic Technology, Chengdu 610036, China) |
| Abstract: |
| The signal processing of maritime AIS(Automatic Identification System)
transceiver is mainly realized by special IC(Integrated Circuit).In this paper,
a digital IF(Intermediate Frequency) substitute solution is proposed in which F
PGA (Field Programmable Ga
te Array) is adopted to implement the maritime AIS IF transceiver signal proces
sing.The design and implementation of modulation,difference demodu
lation,bit and packet synchronization of burst GMSK IF signal is emphasized.Test
results ind
icate that this solution leads to much more flexibility and reliability,and the
performance of the equipment is also improved thanks to parallel digital signal
processing. |
| Key words: automatic identification system(AIS) transceiver digital IF parallel digital signal processing |
