Inverse Synthetic Aperture Radar Imaging: Principles, Algorithms and Applications

Chen, Victor C. Chen; Martorella, Marco

doi:10.1049/sbra504e

Cited by 248 publications

(167 citation statements)

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“…The second exponentials of if-1 (̂, ) and if-2 (̂, ) in (9) account for Doppler and the third exponentials are the residual video phase (RVP). The RVP of each channel can be removed by the translation motion compensation (TMC) algorithms [7]. Taking FT of in (9) in terms of , the two temporary HRRPs of the double channels in the frequency domain, after the two RVPs and constant terms are removed, are obtained as follows:…”

Section: Pulse Compression Via Dual-channel Dechirpingmentioning

confidence: 99%

“…Inverse synthetic aperture radar (ISAR) is a powerful tool in many civilian and military fields such as air traffic control, harbor and river traffic surveillance, and remote sensing of satellites, benefiting from the superiorities such as robust performance under all-weather conditions, high-resolution images, and long detection range [1][2][3][4][5][6][7][8]. The high-resolution image even can be utilized for the purposes of feature extraction and target recognition of noncooperative targets [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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High-Resolution ISAR Imaging with Wideband V-FM Waveforms

Feng¹,

Pan²,

Wang³

2017

International Journal of Antennas and Propagation

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V-FM waveforms, composed of two chirp signals with the opposite slopes, can also achieve high range resolution with wide bandwidth via intrapulse frequency modulation. In this paper, a framework for inverse synthetic aperture radar (ISAR) imaging of moving targets with V-FM waveforms is investigated, where the range compression of the received signals is achieved by the dual-channel dechirping and the azimuth compression is done via the traditional Fourier transform (FT). The two corresponding reconstructed temporary high-resolution range profiles (HRRPs) from the double channels are synthesized for the HRRPs of the target, in which one is flipped from left to right and added to the other. Then the final HRRPs are arranged into a two-dimensional (2D) array and the azimuth compression is done via FT to achieve the ISAR imaging after the motion compensation. Simulated trials, adopting the scattering center modeling of the Yak-42 plane, are used to validate the correctness of the analyses and the finally well-focused images greatly support the effectiveness of V-FM waveforms in ISAR imaging.

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Section: Pulse Compression Via Dual-channel Dechirpingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Resolution ISAR Imaging with Wideband V-FM Waveforms

Feng¹,

Pan²,

Wang³

2017

International Journal of Antennas and Propagation

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“…바이스태틱 레이다 시스템의 개념을 확장하여 송/수신 기능을 모두 수행하는 여러 대의 레이다들을 분리시켜 분포시킴으로써, statistic 다중입력-다중출력(Multiple-Input Multiple-Output: MIMO) 레이다 네트워크(network) 시스템 을 정의할 수 있다 [1] . 여기서 MIMO 레이다 시스템을 통 해 표적을 관측할 경우, 여러 관측각도에서의 바이스태틱 ISAR 영상들을 형성할 수 있다.…”

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“…여기서 MIMO 레이다 시스템을 통 해 표적을 관측할 경우, 여러 관측각도에서의 바이스태틱 ISAR 영상들을 형성할 수 있다. 만약 상기 형성된 모든 바이스태틱 ISAR 영상들을 인코히리언트(incoherent)하게 합성할 수 있다면, 표적에 대한 다중각도에서의 바이스태 틱 산란분포를 하나의 2차원 영상의 형태로 도시하는 MIMO ISAR 영상을 형성할 수 있다 [1] . 상기 MIMO ISAR 영상은 표적 식별 수행 시 높은 정보량을 지닌 유용한 특 징 벡터(feature vector)로 활용될 수 있을 뿐만 아니라, 표 적에 대한 산란 매커니즘 분석 시 유용한 지표로써 활용 될 수 있다.…”

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“…그러나 MIMO 레이다 환경 내 각각의 바이스 태틱 ISAR 영상들은 서로 다른 방향의 2차원 거리-도플 러 영상 투영 평면(Image Projection Plane: IPP)에서 형성 됨과 더불어, 서로 다른 도플러 스케일링 인자(Doppler scaling factor)를 가진다. 또한, 바이스태틱 ISAR 영상 형 성 시 기하학적 왜곡이 발생하기 때문에 [1], [3] , 형성된 바이 스태틱 ISAR 영상들을 인코히리언트하게 합성하는데 큰 어려움이 있다.…”

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3-D Multiple-Input Multiple-Output Interferometric ISAR Imaging

Kang¹,

Bae²,

Yang³

et al. 2015

The Journal of Korean Institute of Electromagnetic Engineering

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본 논문에서는 다중입력-다중출력(multiple-input, multiple-output: MIMO AbstractIn this paper, we propose a multiple-input, multiple-output(MIMO) interferometric radar network system to generate three-dimensional (3-D) MIMO interferometric inverse synthetic aperture radar(InISAR) image. In the MIMO interferometric radar network system, the MIMO InISAR image can be formed by an incoherent summation of multiple bistatic InISAR images that show 3-D scatterers of a target observed at different bistatic interfermetric configurations, respectively. Because bistatic-sccattering physics of a target at different viewpoints are visible in the 3-D MIMO InISAR image, it can provide various scatterering physics properties of a target, and can be used for target classification as a useful feature vector. Simulations validate that our proposed method successfully finds locations of scatterers of a target in MIMO radar interferometric network system.

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Far‐Field Synthetic Aperture Imaging via Fourier Ptychography with Quasi‐Plane Wave Illumination

Li,

Wang,

Liang

et al. 2023

Advanced Photonics Research

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Fourier ptychography (FP) technique is a promising super‐resolution tool in noninterferometric synthetic aperture research thanks to its unique capabilities for circumventing the physical limitation of space bandwidth product. However, FP imaging in the long‐range scenario suffers from field‐of‐view (FOV) attenuation due to spherical‐wave imaging characteristics, and the speckle noise of most targets further restricts the FP's application in far‐field detection. Herein, a remote FP (R‐FP) technique is proposed to address the issues by combining the idea of quasi‐plane wave illumination and the total variation‐guided filtering (TVGF) method. Compared with conventional macroscopic Fourier ptychographic imaging, R‐FP overcomes the contradiction between FOV and detection range and mitigates the effect of speckle noise by utilizing the TVGF method, as demonstrated by high‐resolution imaging of various targets (including United States Air Force (USAF) resolution chart, spade poker, and fingerprint). In particular, the long‐range FP capability of the proposed approach is demonstrated by the synthetic aperture imaging of a King poker card at 12 m away. To the best of the authors’ knowledge, R‐FP achieves the farthest detection range of macroscopic Fourier ptychographic imaging up to date, demonstrating its potential for application in far‐field detection.

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Inverse Synthetic Aperture Radar Imaging: Principles, Algorithms and Applications

Cited by 248 publications

References 0 publications

High-Resolution ISAR Imaging with Wideband V-FM Waveforms

High-Resolution ISAR Imaging with Wideband V-FM Waveforms

3-D Multiple-Input Multiple-Output Interferometric ISAR Imaging

Far‐Field Synthetic Aperture Imaging via Fourier Ptychography with Quasi‐Plane Wave Illumination

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