A SAR multilook optronic processor for operational Earth monitoring applications

Marchese, Linda; Bourqui, Pascal; Turgeon, Sandra; Doucet, Michel; Vachon, Carl; Harnisch, Bernd; Süess, Martin; Châteauneuf, François; Bergeron, Alain

doi:10.1117/12.866986

Cited by 3 publications

(2 citation statements)

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“…And this processor structure indicates that the processes of range and azimuth are separate. The prototype is designed to process data set taken in the image mode from ASAR on ENVISAT with the spatial resolution of 30 meters [3] [6]. On account of the relatively low resolution requirement, the SAR algorithm that only implements range and azimuth compression is sufficient.…”

Section: The Current Optical Sar Processormentioning

confidence: 99%

“…Researchers of INO (National Optics Institute) in Canada have done much research in this area recently. INO's optical processor is based on the tilted-plane processor mentioned above and adopts many new technologies such as high resolution SLM (spatial light modulator) [3] [4]. It can process the data from ASAR on ENVISAT of 30 meter spatial resolution [6].…”

Section: Introductionmentioning

confidence: 99%

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A novel high resolution optical SAR processor for satellite applications

Zhao

Wang

Liu

2013

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS

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Onboard SAR data imaging is increasingly important for many satellite applications. And optical SAR processor is one promising solution due to its extremely quick calculation speed, simple structure and strong radiation hardness. Recent relative researches done by researchers of National Optics Institute in Canada prove the feasibility of optical processor, but its resolution of 30 meter is relatively low. This paper proposes a novel high resolution optical SAR processor which is based on the Range Doppler Algorithm. The processor includes two main elements: the optical one-dimensional Fourier transformation element and the spatial light modulator (SLM). The usage of several SLMs gives wider parameter adjustment boundary and more flexibility to the processor.

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Section: The Current Optical Sar Processormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel high resolution optical SAR processor for satellite applications

Zhao

Wang

Liu

2013

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS

View full text Add to dashboard Cite

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Optronic High-Resolution SAR Processing With the Capability of Adaptive Phase Error Compensation

Gao

Lin

Guo

et al. 2016

IEEE Geosci. Remote Sensing Lett.

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Study on processing synthetic aperture radar data based on an optical 4f system for fast imaging

Wang¹,

Zhang²,

Yang³

et al. 2022

Opt. Express

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Due to the huge amount of collected echo data caused by the working principle of synthetic aperture radar (SAR), the use of digital processing relies heavily on the performance of digital chips. Because of the limitation of Moore’s law, the technology of digital signal processing exposes the limitation of computing speed and power consumption in the face of SAR processing. Against this background, the optical processing method based on the optical 4f system is introduced into SAR imaging. A spatial light modulator (SLM) is placed on the input surface and spectrum surface of the 4f system to load the echo data of the SAR and the matched filter function of the SAR. Using optical Fourier transform to realize the core calculation of SAR data processing can solve the difficulty of processing time-consuming due to the large amount of calculation. In the process of Fourier transform, instead of using a solid glass lens, we use a phase-type Fresnel lens diagram in the SLM to realize the function of Fourier, which avoids the need for special design of Fourier lens. It also greatly reduces the volume and weight of the whole machine, which provides a reference method for real-time imaging of spaceborne SAR.

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A SAR multilook optronic processor for operational Earth monitoring applications

Cited by 3 publications

References 0 publications

A novel high resolution optical SAR processor for satellite applications

A novel high resolution optical SAR processor for satellite applications

Optronic High-Resolution SAR Processing With the Capability of Adaptive Phase Error Compensation

Study on processing synthetic aperture radar data based on an optical 4f system for fast imaging

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