Concept of operation and preliminary experimental results of the DRDC through-wall SAR system

Sévigny, Pascale; DiFilippo, D.; Laneve, Tony; Chan, Brigitte; Fournier, Jonathan; Roy, Sougata; Ricard, Benoit; Maheux, Jean

doi:10.1117/12.849709

Cited by 15 publications

(2 citation statements)

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“…Instead of the use of orthogonal waveforms, a sequential multiplexing of the transmitters with simultaneous reception at multiple receivers is assumed. This signaling approach is a viable option for TWRI operations and is the salient feature of three known through-the-wall radar imaging systems; one is built by the Army Research Lab [8], the other by the Defense Research and Development Canada [9], and the third by MIT Lincoln Lab [4]. With the assumption of sequential multiplexing, a signal model can thus be developed based on single active transmitters.…”

Section: Twri Signal Modelmentioning

confidence: 99%

Wall clutter mitigation for MIMO radar configurations in urban sensing

Ahmad

Amin

2012

2012 11th International Conference on Information Science, Signal Processing and Their Applications (ISSPA)

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Strong front wall returns tend to obscure indoor targets and render through-the-wall target detection difficult and challenging. Among the various techniques proposed for wall clutter mitigation under monostatic radar operation is subspace projection. This technique uses the strength of the wall EM reflections relative to that of the target to separate the wall subspace from the target subspace. In this paper, we present analyses of the subspace projection approach for suppressing wall clutter and preserving indoor targets in multi-input multi-output (MIMO) through-the-wall radar imaging systems. We highlight the similarities and the differences in performance of the subspace technique under MIMO and monostatic configurations. Supporting results based on simulated and experimental data are provided.

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Section: Twri Signal Modelmentioning

confidence: 99%

Wall clutter mitigation for MIMO radar configurations in urban sensing

Ahmad

Amin

2012

2012 11th International Conference on Information Science, Signal Processing and Their Applications (ISSPA)

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“…Typically, by using point scattering focusing, multipath reflections are also focused, leading to false alarms that clutter the image. Due to the confusion and false alarms, (visual) interpretation of focused radar images is difficult without prior knowledge of the building structure, [7], [8]. Furthermore, by using (monostatic) imaging concepts, it is unlikely that walls parallel to the radar line-of-sight can be detected since they give rise to diffuse scattering in the direction of the radar.…”

Section: Introductionmentioning

confidence: 99%

Extraction of Building Features from Stand-Off Measured Through-Wall Radar Data

Wit¹,

Rossum²

2016

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Automated extraction of building features is a great aid in synthesizing building maps from radar data. In this paper, a model-based method is described to detect and classify canonical scatters, such as corners and planar walls, inside a building. Once corners and walls have been located, a building map can be synthesized. To detect and classify the canonical scatterers, sparse reconstruction with an overcomplete dictionary is used. The dictionary is tuned to phase models that are specific to the different canonical scatterers, i.e., a linear phase change for walls and a quadratic phase change for corners. This is a potentially robust method for detecting canonical scatterers because the polynomial degree of the measured phase is preserved, even after propagation through a wall. Building-feature extraction results obtained with actually stand-off measured through-wall radar data are discussed.Index Terms-Overcomplete dictionary (OCD), radar imaging, sparse reconstruction, through-wall radar.

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Multifunction radar concept for through-wall surveillance

Wit

Rossum

Miller

et al. 2013

2013 IEEE Radar Conference (RadarCon13)

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Abstract-Radar systems suitable for stand-off mapping of building structures and through-wall surveillance allow covert reconnaissance of buildings and surveillance of people inside in support of e.g. police raids or search and rescue operations. In this paper the operational concept will be outlined for a multifunction radar system capable of stand-off building imaging and mapping, through-wall tracking of moving people, and blueforce tracking. These capabilities are illustrated with the aid of representative measurements.

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Concept of operation and preliminary experimental results of the DRDC through-wall SAR system

Cited by 15 publications

References 0 publications

Wall clutter mitigation for MIMO radar configurations in urban sensing

Wall clutter mitigation for MIMO radar configurations in urban sensing

Extraction of Building Features from Stand-Off Measured Through-Wall Radar Data

Multifunction radar concept for through-wall surveillance

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