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Proceedings Paper

Detecting ships in lock using laser measurement system
Author(s): Yulong Cao; Jian-zhen Gao; Mingwu Ren; Jingyu Yang
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Paper Abstract

In the paper, Laser Measurement System (LMS) is used to monitor region in ship lock of the Three Gorges Project. Several methods are carried out to detect objects in the region. First, in order to determine whether there are ships in detected region, a distance difference integral method is given. Second, in order to decrease the random noise affection, the neutralization and the relativity of the fore-and-aft data are used to eliminate the noise and to eliminate misjudge from the random data. Third, two LMSs are installed to trace the motive object, a fixed LMS detects a linear region, and the other LMS can be rotated to scan a plane region in ship lock. As the fix LMS detected some motive objects, the other LMS begins to rotate and trace changed region and to determine whether there are objects in detected region. Finally, Laser Measurement System is tested in SanBo ship lock in ZheJiang province of China. All the methods are very effective. And the system will be installed in permanent ship lock of the Three Gorges Project in 2003. The system will keep the safety of the lock.

Paper Details

Date Published: 15 May 2000
PDF: 6 pages
Proc. SPIE 3965, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications, (15 May 2000); doi: 10.1117/12.385448
Show Author Affiliations
Yulong Cao, Nanjing Univ. of Science and Technology (China)
Jian-zhen Gao, Nanjing Univ. of Science and Technology (China)
Mingwu Ren, Nanjing Univ. of Science and Technology (China)
Jingyu Yang, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 3965:
Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications
Morley M. Blouke; Nitin Sampat; Thomas Yeh; Nitin Sampat; George M. Williams; Thomas Yeh, Editor(s)

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