Marine Detection System

Marine Vessel Detection System Comparing Satellite Images And GPRS Signal Information

Sajan Ambadiyil

Optical Image Processing & Security Products

Centre for Development of Imaging Technology

Thiruvanthapuram-695027, Kerala, India [e-mail] Dintu Thomas

Communication Engineering Department

SCMS School of Engineering and Technology

Ernakulam, Kerala, India [e-mail] V.P.Mahadevan Pillai

Department of Optoelectronics, University of Kerala, Kariavattom, Thiruvanthapuram-69558, Kerala, India [e-mail] Abstract— Vessel monitoring systems (VMS) are used in commercial fishing to allow environmental and fisheries regulatory organizations to monitor, the position, time, speed and course of fishing

PROPOSED SYSTEM All the existing systems are proven technologies which prevent accidents and save the lives of countless mariners. It is not feasible to poor fishermen since it is very expensive. In order to overcome this problem a portable, cost effective GPS-GPRS based system is proposed.

In the proposed system, a communication between the fishermen boat with nearby ships and coast guard section is introduced by using a GPS-GPRS based system. GPS receiver which receives signals from the satellite and gives the current position of the boat and transmits the information to the nearest coastguard station through General Packet Radio Service (GPRS). The system consists of a GPRS,GPS , and a micro-chip containing all the information about the vessels and fishermen. The position, location and identity of the seagoing vessels can be easily traced and tracked out by the enforcement authority. The proposed system is also used to detect the maritime boundary of the country. This mainly happens when fisherman crosses maritime border of neighboring country as he is not aware of the limits in sea. The system provides an alert or indication to both coastal guard and to the fisherman. Thus it can save the lives of the fisherman or reduce the damages caused to them by crossing the boundary. The block diagram for the proposed system is shown in Fig.

• The human interpretation is more easier when deals with an optical image than as of a SAR image, without the use of polarimetry.

• The tasking of an optical satellite is more simpler.

Fig 2:Block Diagram for Proposed GPS-GPRS

The various steps involved in the digital processing of Satellite Images are :

1.) Image rectification and restoration.

2.) Image enhancement.

3.) Information extraction

Image rectification and restoration : Geometric distortions apparent themselves as errors in the position of a pixel relative to other pixels in the image If it is left uncorrected, these distortions give any data extracted from the image is useless. Distortions occur for many reasons. For example, due to changes in platform attitude (roll, pitch and yaw), altitude, earth curvature ,earth rotation, detector delay and panoramic distortion. Most of them can be solved mathematically and are removed before you buy an image. Alttitude changes are however difficult solved mathematically and thus a procedure called image rectification is performed. Satellite systems are however geometrically quite