Polarimetric Study of MMW Imaging Radars for Indoor Navigation and Mapping

Moallem, Meysam; Sarabandi, Kamal

doi:10.1109/tap.2013.2289354

Cited by 37 publications

(18 citation statements)

References 12 publications

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“…The results obtained by 2D analysis suggest that reflections from uniform surfaces do not affect the detection and recognition of typical indoor walls. This is in agreement with the experimental results presented in [32]. Specifically, ghost returns individuated in [32] are generated by multiple reflections and backscattering from the bright targets located outside the main beam of the antenna.…”

Section: Point Target Analysissupporting

confidence: 92%

“…This is in agreement with the experimental results presented in [32]. Specifically, ghost returns individuated in [32] are generated by multiple reflections and backscattering from the bright targets located outside the main beam of the antenna. With specific reference to an unknown environment, the main outcome of the 2D analysis is that a single data take from a single location is not adequate for a correct interpretation of the radar response.…”

Section: Point Target Analysissupporting

confidence: 92%

“…However, if bright targets, showing a larger value of RCS, are present in an actual scene, this approximation could not be valid. Indeed, ghost signatures due to multiple backscattered reflections from bright target not in line-of-sight could appear in the image, as in [32], thus causing misleading interpretation of the image itself.…”

Section: Journal Of Sensorsmentioning

confidence: 99%

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Indoor Operations by FMCW Millimeter Wave SAR Onboard Small UAS: A Simulation Approach

2016

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A dedicated system simulator is presented in this paper for indoor operations onboard small Unmanned Aerial Systems (UAS) by a novel millimeter wave radar sensor. The sensor relies on the principle of Synthetic Aperture Radar (SAR) applied to a Frequency Modulated Continuous Wave (FMCW) radar system. Input to the simulator are both design parameters for Synthetic Aperture Radar (SAR), which should be able to cope with the stringent requirements set by indoor operations, and information about platform navigation and observed scene. The scene generation task is described in detail. This is based on models for point target response on either a completely absorbing background or fluctuating background and ray tracing (RT) techniques. Results obtained from scene processing are finally discussed, giving further insights on expected results from high-resolution observation of an assigned control volume by this novel SAR sensor.

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Section: Point Target Analysissupporting

confidence: 92%

Section: Point Target Analysissupporting

confidence: 92%

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Indoor Operations by FMCW Millimeter Wave SAR Onboard Small UAS: A Simulation Approach

2016

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“…However, these techniques need to critically analyse for fully utilisation in MMW images for concealed target identification. Very limited work on the basis of signal processing method has been reported at 60 GHz and more than 60 GHz frequency for complete concealed target detection and identification [22][23][24][25][26] . The dielectric contrast among matchbox, gun, and knife (with a wooden handle) are quite large i.e., matchbox has a very low dielectric constant so it is challenging to detect high dielectric and low dielectric targets from same image processing techniques.…”

Section: Introductionmentioning

confidence: 99%

Development of Scale and Rotation Invariant Neural Network based Technique for Detection of Dielectric Contrast Concealed Targets with Millimeter Wave System

2017

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The detection of concealed targets beneath a person's clothing from standoff distance is an important task for protection and the security of a person in a crowded place like shopping malls, airports and playground stadium, etc. The detection capability of the concealed weapon depends on a lot of factors likes, a collection of back scattered data, dielectric property and a thickness of covering cloths, the hidden object, standoff distance and the probability of false alarm owing to objectionable substances. Though active millimeter wave systems have used to detect weapons under cloths, but still more attention is required to detect the target likes a gun, knife, and matchbox. To observe such problems, active V-band (59 GHz-61 GHz) MMW radar with the help of artificial neural network (ANN) has been demonstrated for non-metallic as well as metallic concealed target detection. To validate ANN, the signature of predefined targets is matched with the signature of validated data with the help of the correlation coefficient. The proposed technique has good capability to distinguish concealed targets under various cloths.

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“…Orthogonal polarization has also been proposed to increase the passive RF tag code length by splitting bits of one code among two orthogonal polarizations [2]. They can also be used in imaging radar to enhance the target features [3].…”

Section: Introductionmentioning

confidence: 99%

Millimeter wave orthogonally polarized substrate integrated waveguide slot antenna arrays

Numan

Frigon

Laurin

2015

Global Symposium on Millimeter-Waves (GSMM)

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Substrate integrated waveguide (SIW) antenna array design with orthogonal polarizations with respect to the array axis is proposed. The antenna structure consists of three layers containing a feeding network, cavities and dielectric cover. The proposed design can achieve any desired polarization and it can be used to design two dimensional arrays. Two 10 element arrays are fabricated with polarization parallel and orthogonal to the array axis. These arrays provide 1GHz impedance bandwidth in automotive radar frequency range (76-81GHz). The designed beamwidth is 9 o in the plane parallel to the array axis and 120 o in the perpendicular plane. Approximately 20dB cross polarization rejection is measured in the desired field of view. The matched measured and simulated results show the validity of the proposed design.

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Polarimetric Study of MMW Imaging Radars for Indoor Navigation and Mapping

Cited by 37 publications

References 12 publications

Indoor Operations by FMCW Millimeter Wave SAR Onboard Small UAS: A Simulation Approach

Indoor Operations by FMCW Millimeter Wave SAR Onboard Small UAS: A Simulation Approach

Development of Scale and Rotation Invariant Neural Network based Technique for Detection of Dielectric Contrast Concealed Targets with Millimeter Wave System

Millimeter wave orthogonally polarized substrate integrated waveguide slot antenna arrays

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