|Table of Contents|

Short message characteristics of AIS base stations(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2012年06期
Page:
111-118
Research Field:
交通信息工程及控制
Publishing date:

Info

Title:
Short message characteristics of AIS base stations
Author(s):
MA Feng;  CHU Xiu-min;  YAN Xin-ping
Engineering Research Center for Transportation Safety of Ministry of Education, Wuhan University of Technology, Wuhan 430070, Hubei, China
Keywords:
maritime communication;  automatic identification system;  hardware-in-the-loop simulation;  Hata-Okumura model;  packet error rate;  field strength calculation;  maximum capacity
PACS:
U675.7
DOI:
-
Abstract:
The characteristics of short messages from automatic identification system(AIS)base stations to ships in the inland river and port were studied. The principles of waveform distortion and package error were analyzed when AIS field strength was declined. In the hardware-in-the-loop simulation platform, the relationship between message length and package error rate was analyzed, and the prediction model of package error rate was proposed. Combined with Hata-Okumura model, the maximum capacity for short messages sent from AIS base stations to ships was proposed in crowded channel. At last, taking the Shanghai Channel of Huangpu River as an example, using the proposed model, the maximum capacity was calculated and compared with the measured result. Comparison result indicates that the reliability of short message decreases with the increase of short message length and the decrease of fixed field strength. The number of AIS target ships communicating with AIS base stations meanwhile is limited. For the Shanghai Channel of Huangpu River, the calculated number of AIS target ship communicating with an AIS base station is 26 when the total AIS target ships is 625, and the measured value is 24, so the calculated value basically matches with the reality value. 2 tabs, 6 figs, 15 refs.

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Last Update: 2012-12-30