2019
DOI: 10.3390/s19102330
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Experimental Research on Interferometric Inverse Synthetic Aperture Radar Imaging with Multi-Channel Terahertz Radar System

Abstract: The all solid-state terahertz (THz) radar has obvious miniaturized integration and high resolution imaging advantages compared with conventional microwave radar. In this paper, a 0.22 THz active frequency-modulated pulse radar system with one transmission channel and four receiving channels is presented, and interferometric inverse synthetic aperture radar (InISAR) imaging experiments, which can acquire altitude information of objects, are carried out. In order to acquire high-quality InISAR images, a calibrat… Show more

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Cited by 14 publications
(11 citation statements)
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“…According to the difference in elevation dimension imaging, 3-D radar imaging systems are mainly divided into two categories. First-class imaging systems utilize the interferometry technique and equivalent geometry to retrieve target height information [7]. The interferometry imaging handles phase differences from multiple SAR/ISAR images produced by multiple receivers of different views.…”
Section: Introductionmentioning
confidence: 99%
“…According to the difference in elevation dimension imaging, 3-D radar imaging systems are mainly divided into two categories. First-class imaging systems utilize the interferometry technique and equivalent geometry to retrieve target height information [7]. The interferometry imaging handles phase differences from multiple SAR/ISAR images produced by multiple receivers of different views.…”
Section: Introductionmentioning
confidence: 99%
“…Besides, the photon energy of THz waves is much lower than the familiar X-ray, causing nearly no harm to human bodies. The above advantages show the great potential of THz imaging and sensing in plenty of applications [2], including public security detection [3][4][5][6][7][8][9][10][11][12][13][14][15][16], radar imaging [17][18][19][20][21][22][23][24][25][26][27], non-destructive inspection [28,29], and biomedical testing [30].…”
Section: Introductionmentioning
confidence: 99%
“…Recently, the interferometric technique is applied to the THz ISAR imaging system, for the purpose of acquiring the 3D images of moving targets. Researchers from the National University of Defense Technology (NUDT) developed an interferometric inverse synthetic aperture radar (InISAR) imaging system in the 0.22 THz band [26,27], and achieved 3D images of targets undergoing turntable rotation or equivalent translational movement. However, the effective FOV is still restricted by the antenna aperture, once the targets move out the FOV, they cannot be imaged continuously.…”
Section: Introductionmentioning
confidence: 99%
“…Inverse synthetic aperture radar (ISAR) can image non-cooperative targets and obtain high-resolution two-dimension (2-D) images, serving as an effective tool for radar target recognition with broad applications in civilian and military fields [ 1 , 2 , 3 , 4 , 5 , 6 ]. The Range-Doppler (RD) algorithm is usually adopted to generate the target’s ISAR images [ 7 ], but the obtained images only reveal the Doppler information of the target in the azimuth dimension rather than the information about the actual size of the target.…”
Section: Introductionmentioning
confidence: 99%