Two-Dimensional Augmented State–Space Approach with Applications to Sparse Representation of Radar Signatures

Two-Dimensional Augmented State–Space Approach with Applications to Sparse Representation of Radar Signatures

In this work, we focus on sparse representation of two-dimensional (2-D) radar signatures for man-made targets. Based on the damped exponential (DE) model, a 2-D augmented state−space approach (ASSA) is proposed to estimate the parameters of scattering centers on complex man-made targets,...

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Main Authors: Kejiang Wu, Xiaojian Xu
Format: Article
Language:English
Published: MDPI AG 2019-10-01
Series:Sensors
Subjects:
damped exponential (de) model
inverse synthetic aperture radar (isar)
radar signatures
state–space approach (ssa)
sparse representation
Online Access:https://www.mdpi.com/1424-8220/19/21/4631
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spelling doaj-5d2da753a411444398f9cb388aa9caf62020-11-25T02:33:14ZengMDPI AGSensors1424-82202019-10-011921463110.3390/s19214631s19214631Two-Dimensional Augmented State–Space Approach with Applications to Sparse Representation of Radar SignaturesKejiang Wu0Xiaojian Xu1School of Electronics and Information Engineering, Beihang University, Beijing 100191, ChinaSchool of Electronics and Information Engineering, Beihang University, Beijing 100191, ChinaIn this work, we focus on sparse representation of two-dimensional (2-D) radar signatures for man-made targets. Based on the damped exponential (DE) model, a 2-D augmented state−space approach (ASSA) is proposed to estimate the parameters of scattering centers on complex man-made targets, i.e., the complex amplitudes and the poles in down-range and aspect dimensions. An augmented state−space approach is developed for pole estimation of down-range dimension. Multiple-range search strategy, which applies one-dimensional (1-D) state−space approach (SSA) to the 1-D data for each down-range cell, is used to alleviate the pole-pairing problem occurring in previous algorithms. Effectiveness of the proposed approach is verified by the numerical and measured inverse synthetic aperture radar (ISAR) data.https://www.mdpi.com/1424-8220/19/21/4631damped exponential (de) modelinverse synthetic aperture radar (isar)radar signaturesstate–space approach (ssa)sparse representation
collection DOAJ
language English
format Article
sources DOAJ
author Kejiang Wu
Xiaojian Xu
spellingShingle Kejiang Wu
Xiaojian Xu
Two-Dimensional Augmented State–Space Approach with Applications to Sparse Representation of Radar Signatures
Sensors
damped exponential (de) model
inverse synthetic aperture radar (isar)
radar signatures
state–space approach (ssa)
sparse representation
author_facet Kejiang Wu
Xiaojian Xu
author_sort Kejiang Wu
title Two-Dimensional Augmented State–Space Approach with Applications to Sparse Representation of Radar Signatures
title_short Two-Dimensional Augmented State–Space Approach with Applications to Sparse Representation of Radar Signatures
title_full Two-Dimensional Augmented State–Space Approach with Applications to Sparse Representation of Radar Signatures
title_fullStr Two-Dimensional Augmented State–Space Approach with Applications to Sparse Representation of Radar Signatures
title_full_unstemmed Two-Dimensional Augmented State–Space Approach with Applications to Sparse Representation of Radar Signatures
title_sort two-dimensional augmented state–space approach with applications to sparse representation of radar signatures
publisher MDPI AG
series Sensors
issn 1424-8220
publishDate 2019-10-01
description In this work, we focus on sparse representation of two-dimensional (2-D) radar signatures for man-made targets. Based on the damped exponential (DE) model, a 2-D augmented state−space approach (ASSA) is proposed to estimate the parameters of scattering centers on complex man-made targets, i.e., the complex amplitudes and the poles in down-range and aspect dimensions. An augmented state−space approach is developed for pole estimation of down-range dimension. Multiple-range search strategy, which applies one-dimensional (1-D) state−space approach (SSA) to the 1-D data for each down-range cell, is used to alleviate the pole-pairing problem occurring in previous algorithms. Effectiveness of the proposed approach is verified by the numerical and measured inverse synthetic aperture radar (ISAR) data.
topic damped exponential (de) model
inverse synthetic aperture radar (isar)
radar signatures
state–space approach (ssa)
sparse representation
url https://www.mdpi.com/1424-8220/19/21/4631
work_keys_str_mv AT kejiangwu twodimensionalaugmentedstatespaceapproachwithapplicationstosparserepresentationofradarsignatures
AT xiaojianxu twodimensionalaugmentedstatespaceapproachwithapplicationstosparserepresentationofradarsignatures
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