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Application of Position Data Compression Method by Dropping Most Significant Bits to AIS and a Protocol Design Based on Real AIS Data
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- Seta Takahiro
- 国立研究開発法人 海上・港湾・航空技術研究所 海上技術安全研究所
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- Kobayashi Mitsuru
- 国立研究開発法人 海上・港湾・航空技術研究所 海上技術安全研究所
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- Niwa Yasuyuki
- 国立研究開発法人 海上・港湾・航空技術研究所 海上技術安全研究所
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- Matsumoto Hirofumi
- 国立研究開発法人 水産研究・教育機構 水産大学校
Bibliographic Information
- Other Title
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- 上位桁破棄による位置データ圧縮手法のAIS への適用と実データに基づくプロトコルの試設計
- ジョウイ ケタ ハキ ニ ヨル イチ データ アッシュク シュホウ ノ AIS エ ノ テキヨウ ト ジツ データ ニ モトズク プロトコル ノ シセッケイ
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Description
<p>A data compression method applicable to position data in AIS (Automatic Identification System) like system is proposed, in which MSBs (Most Significant Bits, higher bits) of position data are dropped from data to be exchanged. The MSB dropping technique has had a problem which comes from the nature that the distance corresponding to a degree longitude becomes smaller in the high latitude region than on the equator. This problem is solved by splitting region according to latitudes and dropping LSBs (Least Significant Bits, lower bits) in high latitude regions instead of dropping MSBs. In addition, a sample protocol is designed according to real AIS data. With the designed protocol, the data size of position data in the AIS is decreased by 20%.</p>
Journal
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- Journal of the Japan Society of Naval Architects and Ocean Engineers
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Journal of the Japan Society of Naval Architects and Ocean Engineers 26 (0), 247-253, 2017
The Japan Society of Naval Architects and Ocean Engineers
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Details 詳細情報について
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- CRID
- 1390282680233438720
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- NII Article ID
- 130006449189
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- NII Book ID
- AA12057769
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- ISSN
- 18811760
- 18803717
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- NDL BIB ID
- 028836690
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed