AIS与ASM多信道实时接收解调系统  

Multi-channel real-time reception and demodulation system of AIS and ASM

作　　者：黄金磊 王建新 杨树树 HUANG Jinlei;WANG Jianxin;YANG Shushu(School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Nanjing Electronic Equipment Institute,Nanjing 210007,China)

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094 [2]南京电子设备研究所,江苏南京210007

出　　处：《电子设计工程》2022年第21期95-99,共5页Electronic Design Engineering

摘　　要：AIS系统是一种工作在海上甚高频的船舶自动识别系统,ASM是包含在VDES下的特殊应用报文的通道,二者被用于实现海上船舶通信、船舶航行避碰等。针对AIS和ASM通信设备对实时处理能力的需求,采用FPGA和DSP共同合作的方法,实现了AIS与ASM的多信道实时接收解调,通过信号源进行地面测试,测试结果证明,该解调系统可以同时解调四个AIS信道和两个ASM信道的信息,且AIS的灵敏度为-119 d Bm,ASM的灵敏度为-116 d Bm。The AIS system is an automatic identification system that works at VHF at sea. ASM is a channel for application specific messages contained in VDES. They are used to achieve maritime ship communication and ship collision avoidance. In response to the demand for real-time processing capabilities of AIS and ASM communication equipment,the method of joint cooperation between FPGA and DSP is used to realize the multi-channel real-time reception and demodulation of AIS and ASM. Ground testing is carried out through the signal source. The test results prove that the demodulation system can demodulate the information of 4 AIS channels and 2 ASM channels at the same time,and the sensitivity of AIS is-119 d Bm,and the sensitivity of ASM is-116 d Bm.

关 键 词：AIS ASM 多信道 实时接收解调 灵敏度 

分 类 号：TN911.72[电子电信—通信与信息系统]