Oversampling advances in millimeter-wave scan imaging using inexpensive neon indicator lamp detectors

Levanon, Assaf; Kopeika, Norman S.; Yitzhaky, Yitzhak; Abramovich, Amir; Rozban, Daniel; Joseph, H.; Aharon, Avihai; Belenky, A.; Gefen, Michael; Pecht, Michael

doi:10.1117/1.oe.52.6.063202

Cited by 9 publications

(10 citation statements)

References 19 publications

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“…The design of the FPA is based on our previous work in MMW imaging systems using GDD FPAs operated in direct detection mode [15][16][17][18][19][20][21]. However, by implementing heterodyne FMCWs, this concept can enable video rate 3D standoff detection for homeland security applications.…”

Section: Discussionmentioning

confidence: 99%

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Capability of long distance 100 GHz FMCW using a single GDD lamp sensor

et al. 2014

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Millimeter wave (MMW)-based imaging systems are required for applications in medicine, homeland security, concealed weapon detection, and space technology. The lack of inexpensive room temperature imaging sensors makes it difficult to provide a suitable MMW system for many of the above applications. A 3D MMW imaging system based on chirp radar was studied previously using a scanning imaging system of a single detector. The radar system requires that the millimeter wave detector will be able to operate as a heterodyne detector. Since the source of radiation is a frequency modulated continuous wave (FMCW), the detected signal as a result of heterodyne detection gives the object's depth information according to value of difference frequency, in addition to the reflectance of the 2D image. New experiments show the capability of long distance FMCW detection by using a large scale Cassegrain projection system, described first (to our knowledge) in this paper. The system presents the capability to employ a long distance of at least 20 m with a low-cost plasma-based glow discharge detector (GDD) focal plane array (FPA). Each point on the object corresponds to a point in the image and includes the distance information. This will enable relatively inexpensive 3D MMW imaging.

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Section: Discussionmentioning

confidence: 99%

“…Recent results include the use of oversampling subpixel shifting to obtain high resolution images [18][19][20] on the order of 0.9 milliradians in special circumstances. Moreover, shortly we plan to present an initial description of a new high speed FMCW 256 pixel FPA of 3 mm diameter commercial GDD lamps in a 16 × 16 format.…”

Section: Introductionmentioning

confidence: 99%

Capability of long distance 100 GHz FMCW using a single GDD lamp sensor

et al. 2014

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“…However, success in developing less expensive real-time millimeter wave and terahertz imaging systems depends largely on the ability to develop inexpensive focal plane arrays, especially using inexpensive detectors such as GDDs. Indeed, small GDD arrays such as 8 × 8 and 18 × 2 scanner have been developed and tested and found to yield very good image quality despite the large size and dimensions of the lamps [15]- [19]. Recent results include using oversampling sub-pixel shifting to obtain high resolution images [17]- [19] on the order of 0.9 milliradians.…”

Section: Introductionmentioning

confidence: 97%

“…Indeed, small GDD arrays such as 8 × 8 and 18 × 2 scanner have been developed and tested and found to yield very good image quality despite the large size and dimensions of the lamps [15]- [19]. Recent results include using oversampling sub-pixel shifting to obtain high resolution images [17]- [19] on the order of 0.9 milliradians. If 3 mm diameter lamps are used, 0.5 milliradian resolution should be achievable.…”

Section: Introductionmentioning

confidence: 97%

“…It was shown that it is possible to detect metallic materials, and interpolate over the image with the assistance of DSP algorithms. A quasi optical system for the detector FPA was also designed, and various kinds of imaging were demonstrated [16]- [19]. Lab VIEW controlling software permits graphical algorithm display and image processing.…”

Section: Introductionmentioning

confidence: 99%

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Calibration Method for MMW Imaging Using Inexpensive Miniature Neon Indicator Lamp Detectors

et al. 2014

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We have developed focal plan array (FPA) imagers based on very inexpensive miniature neon indicator lamp detectors called glow discharged detectors (GDDs). The novelty of this paper is a technique of calibration, which permits reliable imaging with such an inexpensive FPA. GDDs are commercial lamps, which lack uniformity as detectors. The technique developed in this paper cancels out differences in response between the FPA lamps caused by both nonuniformity of the MMW collimated beam, and nonuniformity of the GDDs and other components in the electronic circuit. Utilizing this method in the new imaging system unifies detector response. Results, shown with two types of sensor configurations (8 × 8 and 18× 2 scanner array), indeed show better performances and improvement in visibility of details.

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A Harmonics Interferometric Doppler Sensor With a Neon Lamp Detector

Liao

Wang

et al. 2020

IEEE Sensors J.

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Oversampling advances in millimeter-wave scan imaging using inexpensive neon indicator lamp detectors

Cited by 9 publications

References 19 publications

Capability of long distance 100 GHz FMCW using a single GDD lamp sensor

Capability of long distance 100 GHz FMCW using a single GDD lamp sensor

Calibration Method for MMW Imaging Using Inexpensive Miniature Neon Indicator Lamp Detectors

A Harmonics Interferometric Doppler Sensor With a Neon Lamp Detector

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