DC Field | Value | Language |
---|---|---|
dc.contributor.author | Principe, Jose | ko |
dc.contributor.author | Kim, Munchurl | ko |
dc.contributor.author | Fisher, John | ko |
dc.date.accessioned | 2022-12-04T05:00:10Z | - |
dc.date.available | 2022-12-04T05:00:10Z | - |
dc.date.created | 2022-12-03 | - |
dc.date.issued | 1998-08 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON IMAGE PROCESSING, v.7, no.8, pp.1136 - 1149 | - |
dc.identifier.issn | 1057-7149 | - |
dc.identifier.uri | http://hdl.handle.net/10203/301565 | - |
dc.description.abstract | This paper addresses target discrimination in synthetic aperture radar (SAR) imagery using linear and nonlinear adaptive networks. Neural networks are extensively used for pattern classification but here the goal is discrimination. We show that the two applications require different cost functions. We start by analyzing with a pattern recognition perspective the two-parameter constant false alarm rate (CFAR) detector which is widely utilized as a target detector in SAR. Then we generalize its principle to construct the quadratic gamma discriminator (QGD), a nonparametrically trained classifier based on local image intensity. The linear processing element of the QCD is further extended with nonlinearities yielding a multilayer perceptron (MLP) which we call the NL-QGD (nonlinear QGD). MLPs are normally trained based on the L/sub 2/ norm. We experimentally show that the L/sub 2/ norm is not recommended to train MLPs for discriminating targets in SAR. Inspired by the Neyman-Pearson criterion, we create a cost function based on a mixed norm to weight the false alarms and the missed detections differently. Mixed norms can easily be incorporated into the backpropagation algorithm, and lead to better performance. Several other norms (L/sub 8/, cross-entropy) are applied to train the NL-QGD and all outperformed the L/sub 2/ norm when validated by receiver operating characteristics (ROC) curves. The data sets are constructed from TABILS 24 ISAR targets embedded in 7 km/sub 2/ of SAR imagery (MIT/LL mission 90). | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | Target Discrimination in Synthetic Aperture Radar Using Artificial Neural Networks | - |
dc.type | Article | - |
dc.identifier.wosid | 000074868300005 | - |
dc.identifier.scopusid | 2-s2.0-0032139311 | - |
dc.type.rims | ART | - |
dc.citation.volume | 7 | - |
dc.citation.issue | 8 | - |
dc.citation.beginningpage | 1136 | - |
dc.citation.endingpage | 1149 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON IMAGE PROCESSING | - |
dc.identifier.doi | 10.1109/83.704307 | - |
dc.contributor.localauthor | Kim, Munchurl | - |
dc.contributor.nonIdAuthor | Principe, Jose | - |
dc.contributor.nonIdAuthor | Fisher, John | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | gamma kernels | - |
dc.subject.keywordAuthor | mixed norm training | - |
dc.subject.keywordAuthor | neural networks | - |
dc.subject.keywordAuthor | synthetic aperture radar | - |
dc.subject.keywordAuthor | target discrimination | - |
dc.subject.keywordPlus | SAR IMAGERY | - |
dc.subject.keywordPlus | RECOGNITION | - |
dc.subject.keywordPlus | SYSTEM | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.