Two-Step Detector for RADARSAT-2's Experimental GMTI Mode

Gierull, Christoph H.; Sikaneta, Ishuwa; Cerutti-Maori, Delphine

doi:10.1109/tgrs.2012.2201729

Cited by 104 publications

(66 citation statements)

References 25 publications

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“…Since the scope of the paper is to demonstrate the improved capabilities of the proposed configuration against current state-of-the-art SAR-GMTI missions, the clutter is assumed to have a stationary zero-mean complex Gaussian distribution c (ϑ c ) ∈ C ∼ N (0, R c ), as it is extendedly considered in the literature [16], [18], [19]. This hypothesis breaks down when considering realistic scenarios that may contain highly heterogeneous terrains, such as urban or industrial areas [13]. In the maritime case, it has been assumed that a Kdistribution (compound model) fits well the sea clutter returns [20].…”

Section: B Interferencementioning

confidence: 99%

“…Therefore, a simple complex subtraction between the two coregistrated channels allow canceling the clutter while the moving targets show up in the final DPCA image, [11]- [13].…”

Section: Gmti Processing Techniquesmentioning

confidence: 99%

“…The high sensitivity of the interferometric phase to slight variations in the scene allows exploiting the ATI to perform detection of slowly moving targets [10]- [13]. ATI, as DPCA, is a dual-channel antenna technique, where the formation of the interferogram allows both detection of the moving target and estimation of its radial velocity.…”

Section: B Along-track Interferometry (Ati)mentioning

confidence: 99%

“…deterministic case, whereas for values above this value there is a global degradation. Additionally, the impact of data averaging (multilook processing) on P d has been also evaluated (not reported here due to space limitations), showing an improvement on P d as the number of looks (boxcar size) increases, whenever the target occupies a sufficient number of single-look resolution cells to avoid degradation on the effective SCNR after multilook, see [13].…”

Section: A Monte Carlo Approachmentioning

confidence: 99%

“…small boats in the sea. For this dual receive antenna (DRA) mode configurations, conventional SAR-GMTI processing techniques operating on the SAR images can be applied, based on either phase change detection, along-track interferometry (ATI) [10]- [11]; or clutter cancellation in the case of displaced phase center antenna (DPCA) [11]- [13].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Performance Evaluation of SAR-GMTI Missions for Maritime Applications

Makhoul

Broquetas

Rodon

et al. 2015

IEEE Trans. Geosci. Remote Sensing

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Abstract-This paper proposes a new optimized multichannel synthetic aperture radar (SAR) configuration, based on receiving antennas with non-uniformly displaced phase centers, intended for ground moving target indication (GMTI) applications over maritime scenarios. This system is compared with current SAR missions, such as TerraSAR-X (TSX) or TanDEM-X (TDX). The GMTI capabilities of the different configurations are analyzed in a two-level performance approach. First, an intensive numerical simulation evaluation, based on Monte Carlo (MC) trials, is carried out in order to characterize the probabilities of detection under different system parameters as well as scenario conditions. Different GMTI techniques, displaced phase center antenna (DPCA), along-track interferometry (ATI) and extended displaced phase center antenna (EDPCA), are assessed. In a second step, synthetic simulated SAR data, obtained in a study case scenario, is used to demonstrate the potential improvement of the proposed multichannel configuration compared to current SAR missions, providing subclutter visibility for maritime surveillance of small and slowly moving boats.Index Terms-Synthetic aperture radar (SAR), ground moving target indication (GMTI), displaced phase center antenna (DPCA), along-track interferometry (ATI), extended DPCA (ED-PCA), constant false alarm rate (CFAR) detector, Monte Carlo (MC) simulations, SAR raw data simulation.

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Section: B Interferencementioning

confidence: 99%

“…Therefore, a simple complex subtraction between the two coregistrated channels allow canceling the clutter while the moving targets show up in the final DPCA image, [11]- [13].…”

Section: Gmti Processing Techniquesmentioning

confidence: 99%