Volume 4, Issue 1 (Journal of Control, V.4, N.1 Spring 2010)                   JoC 2010, 4(1): 1-11 | Back to browse issues page

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Kazemi A, Farrokhi M. Line-of-sight stabilization for submarine periscopes . JoC. 2010; 4 (1) :1-11
URL: http://joc.kntu.ac.ir/article-1-141-en.html
1- Department of Electrical Engineering, Iran University of Science and Technology
Abstract:   (11761 Views)
This paper presents a method for line-of-sight stabilization in submarine periscopes with respect to disturbances in the sea surface movements. These disturbances can cause unstable images taken by the periscope and give altered information from the targets that are located on the see surface, on the land, or in the air. To overcome this problem, an image stabilization method is required to generate reference signals for servomotors to remove the unwanted motions incurred on the image sequences. To drive the stabilization equations, basic rotation and homogeneous transformation matrices will be used. The stabilization equations will be derived for two different cases: 1) the range of target is known and 2) the range of target is unknown. In fact, these equations map the input space to the three-dimensional output space. The input space consists of the deviation angles of the periscope platform, the optional target range, which can be measured or given by the operator (optional data), and some desired operator information. The output space consists of three reference signals for three servomotors inside the persicope. The proposed method is implemented on an experimental periscope, mounted on a moving platform, which simulates the sea surface movements. The experimental results show good performance of the proposed method against sea surface movements.
Full-Text [PDF 338 kb]   (1472 Downloads)    
Type of Article: Research paper | Subject: Special
Received: 2014/08/22 | Accepted: 2014/08/22 | Published: 2014/08/22

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