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.
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)
出处
《电子设计工程》
2022年第21期95-99,共5页
Electronic Design Engineering
关键词
AIS
ASM
多信道
实时接收解调
灵敏度
AIS
ASM
multi-channel
real-time reception and demodulation
sensitivity
