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Research on the Additional Secondary Phase Factor for Automatic Identification System Signals Transmitted over a
Xiaoye Wang1, Shufang Zhang2, Xiaowen Sun3
1Information Science and Technology College, Dalian Maritime University, Dalian 116026, China. xywang1987@dlmu.edu.cn.
Sensors (Basel, Switzerland)
|February 22, 2018
Summary
This study analyzes Additional Secondary Phase Factor (ASF) in Automatic Identification System (AIS) signals over rough seas. Findings aid accurate propagation delay measurements and reliable VHF communication link design in marine engineering.
Area of Science:
- Electromagnetics and Wave Propagation
- Marine Engineering
- Signal Processing
Background:
- Automatic Identification System (AIS) signals are crucial for maritime navigation and safety.
- Understanding signal propagation over rough sea surfaces is complex due to environmental variability.
- Additional Secondary Phase Factor (ASF) influences signal integrity and accuracy in marine environments.
Purpose of the Study:
- To investigate the Additional Secondary Phase Factor (ASF) characteristics of AIS signals over rough sea surfaces.
- To analyze the impact of varying propagation conditions on AIS signal ASFs.
- To provide a foundation for accurate propagation delay measurements and robust communication link design.
Main Methods:
- Developing and analyzing mathematical expressions for ASFs of AIS signals.
- Performing numerical calculations to quantify ASF behavior.
- Conducting simulation analyses under rough sea surface conditions.
Main Results:
- Characterized ASF variations in AIS signals across different propagation conditions.
- Quantified the influence of rough sea surfaces on signal ASFs.
- Established a relationship between signal form and ASF changes.
Conclusions:
- The study provides insights into ASF behavior crucial for high-accuracy propagation delay measurements of AIS signals over rough seas.
- Results offer a valuable reference for designing reliable Very High Frequency (VHF) communication links in marine engineering.
- Understanding ASF is key to enhancing maritime communication and navigation system performance.
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