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Classification of sonar signals using artificial neural network voting scheme / Nor Shaadah Bt Hamzah

Classification of sonar signals using artificial neural network voting scheme_Nor Shaadah Bt Hamzah_E3_2010_875003615_00003084308_NI
Istilah SONAR merujuk kepada teknik yang menggunakan perambatan bunyi dalam air untuk navigasi komunikasi atau mengesan objek lain di dalam air. Bagi projek ini, set data sonar yang digunakan mengandungi isyarat yang diperolehi daripada pelbagai perbezaan dari segi sudut, 90 darjah untuk silinder logam dan 180 darjah untuk silinder luruslaras batu. Setiap corak adalah set bagi 60 nilai dalam julat 0.0 hingga 1.0. Setiap nombor mewakili tenaga dalam tempoh perincian jalur frekuensi, bersepadu dalam tempoh masa tertentu. Satu sistem pintar dari Rangkaian Neural Buatan (RNB) digunakan untuk mengklasifikasikan isyarat sonar daripada dua jenis sasaran di bawah laut iaitu silinder logam (bounced off a cylinder metal) dan silinder luruslaras batu (bounced of cylindrical rock). Rangkaian Perceptron Berbilang Lapisan (MLP) digunakan untuk mengesan dan mengelas setiap isyarat sonar. Algoritma pembelajaran Bayesian Regularization backpropagation digunakan untuk melatih rangkaian. MLP yang memberikan anggaran pengelasan dengan purata ralat yang terkecil dipilih untuk membentuk MLP gabungan dan disatukan di dalam satu sistem undian. Dalam projek ini, MLP diimplementasikan dalam satu dan dua kelas keluaran. Pembandingan prestasi dilakukan kepada kedua-dua kelas keluaran. Sistem MLP gabungan diuji dengan menggunakan set data pengesahan dan prestasinya dibandingkan dengan MLP tunggal tanpa skema undian. Keputusan menunjukkan MLP dengan satu kelas keluaran mengelas isyarat sonar dengan lebih baik daripada MLP dua kelas keluaran. Manakala MLP gabungan pula memberikan pengelasan isyarat sonar lebih baik daripada MLP tunggal. Keputusan yang diperolehi menunjukkan bahawa skema undian boleh digunakan untuk meningkatkan ketepatan pengelasan isyarat sonar. ------------------------------------------------------------------------------------------------------------------------------------ SONAR is a technique that uses sound propagation to navigate, communicate with or detect other objects. In this project, sonar data set are obtained from cylinder at aspect angles spanning 90 degree and from the rock at aspect angles spanning 180 degree. Each pattern is a set of 60 numbers in the range 0.0 to 1.0. Each number represents the energy within a particular frequency band, integrated over a certain period of time. An intelligent system from Artificial Neural Network (ANN) has been applied to the classification of SONAR returns from undersea targets, which are bounced off a metal cylinder and those bounced off a roughly cylindrical rock. Multilayer Perceptron (MLP) ANNs are used to identify and classify each sonar signal. The Bayesian Regularization back-propagation learning algorithm was used to train the network. MLPs that give small average error has been chosen to form an MLP ensemble, and to integrate with a voting system. In this project, MLPs with one and two output classes has been implemented. The performance of both types of MLP output classes are compared.This ensemble system are tested using the verification data set and its performance is compared with single MLPs without the voting scheme. The result show that MLP with one output class can classify sonar signals better than MLPs with two output classes. While, MLP ensemble gives better sonar signal classification than single MLPs. The results demonstrate the feasibility of applying the MLP ensemble to increase the classification performance of classifying the sonar signals.
Contributor(s):
Nor Shaadah Bt Hamzah - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003084308
Accession Number : 875003615
Language:
English
Subject Keywords:
SONAR is a technique that uses sound propagation to navigate, communicate with or detect other objects.; sonar data set are obtained from cylinder at aspect angles spanning 90 degree and from the rock at aspect angles spanning 180 degree; bounced off a metal cylinder and those bounced off a roughly cylindrical rock.
First presented to the public:
1/4/2010
Original Publication Date:
3/14/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 74
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-03-14 15:31:37.662
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Nor Hayati Ismail

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Classification of sonar signals using artificial neural network voting scheme / Nor Shaadah Bt Hamzah1 2018-03-14 15:31:37.662