scholarly journals Two-dimensional synthetic aperture millimeter-wave radiometric interferometer for measuring full-component Stokes vector of emission from hydrometeors

Radio Science ◽  
2003 ◽  
Vol 38 (3) ◽  
pp. n/a-n/a ◽  
Author(s):  
B. G. Kutuza ◽  
G. K. Zagorin
Keyword(s):  
Millimeter Wave ◽  
Synthetic Aperture ◽  
Stokes Vector ◽  
Two Dimensional

Two-dimensional interferometric and synthetic aperture imaging with a hybrid terahertz/ millimeter wave system

2010 ◽  
Vol 49 (19) ◽  
pp. E13 ◽  
Author(s):  
Ke Su ◽  
Zhiwei Liu ◽  
Robert B. Barat ◽  
Dale E. Gary ◽  
Zoi-Heleni Michalopoulou ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Synthetic Aperture ◽  
Wave System ◽  
Two Dimensional ◽  
Synthetic Aperture Imaging

Millimeter-Wave Two-Dimensional Beam-Switchable and Scalable Phased Antenna Array

2021 ◽  
pp. 1-1
Author(s):  
Nai-Chen Liu ◽  
Ching-Cheng Tien ◽  
Chi-Yang Chang ◽  
Hao-Wei Ling ◽  
Chih-Wei Chiu ◽  
...  
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Two Dimensional ◽  
Phased Antenna Array

Two-Dimensional Channel Parameter Estimation for Millimeter-Wave Systems using Butler Matrices

2020 ◽  
pp. 1-1
Author(s):  
Fazal-E- Asim ◽  
Felix Antreich ◽  
Charles C. Cavalcante ◽  
Andre L. F. De Almeida ◽  
Josef A. Nossek
Keyword(s):  
Parameter Estimation ◽  
Millimeter Wave ◽  
Two Dimensional ◽  
Channel Parameter

scholarly journals An Efficient Signal Reconstruction Algorithm for Stepped Frequency MIMO-SAR in the Spotlight and Sliding Spotlight Modes

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Jiajia Zhang ◽  
Guangcai Sun ◽  
Mengdao Xing ◽  
Zheng Bao ◽  
Fang Zhou
Keyword(s):  
Efficient Algorithm ◽  
Low Cost ◽  
Signal Reconstruction ◽  
Multiple Input Multiple Output ◽  
Reconstruction Algorithm ◽  
Synthetic Aperture ◽  
Two Dimensional ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Stepped Frequency

Multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) using stepped frequency (SF) waveforms enables a high two-dimensional (2D) resolution with wider imaging swath at relatively low cost. However, only the stripmap mode has been discussed for SF MIMO-SAR. This paper presents an efficient algorithm to reconstruct the signal of SF MIMO-SAR in the spotlight and sliding spotlight modes, which includes Doppler ambiguity resolving algorithm based on subaperture division and an improved frequency-domain bandwidth synthesis (FBS) method. Both simulated and constructed data are used to validate the effectiveness of the proposed algorithm.

A Hybrid Synthetic Aperture and Time-Reversal MUSIC Algorithm for Subwavelength Radar Imaging

2021 ◽  
Author(s):  
Nathaniel Tamminga ◽  
Brianna Christensen ◽  
Sarah Petry ◽  
Enson Chang
Keyword(s):  
Synthetic Aperture Radar ◽  
Millimeter Wave ◽  
Time Reversal ◽  
Radar Imaging ◽  
Synthetic Aperture ◽  
Music Algorithm ◽  
Subwavelength Imaging ◽  
Chipless Rfid ◽  
Imaging Approach ◽  
Printing Cost

A promising chipless RFID approach uses millimeter-wave synthetic aperture radar (SAR) to image metal ink-printed ID tags from a meter or more away. Due to printing cost, it is desirable to minimize the size and spacing of metal patches within a tag, preferably into the subwavelength regime. Although circular SAR (CSAR) has a sharply peaked point response in 2D, its side lobes of closely-spaced targets interfere strongly with each other to distort the image. An alternative 2D subwavelength imaging approach with minimal side lobes is Time-Reversal MUSIC (TR-MUSIC). Traditional TR-MUSIC, however, requires a large number of transmitters and receivers. We propose a hybrid synthetic aperture TR-MUSIC algorithm (SATR-MUSIC) that combines the benefits of both approaches. Using relatively few transceivers, SATR-MUSIC is able to resolve objects separated by approximately  in 2D with minimal background artifacts. It does so by averaging TR-MUSIC’s imaging kernel incoherently over the synthetic aperture.

scholarly journals Millimeter-wave photoresponse due to excitation of two-dimensional plasmons in InGaAs/InP high-electron-mobility transistors

2013 ◽  
Vol 114 (3) ◽  
pp. 033105 ◽  
Author(s):  
N. Nader Esfahani ◽  
R. E. Peale ◽  
W. R. Buchwald ◽  
C. J. Fredricksen ◽  
J. R. Hendrickson ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Electron Mobility ◽  
High Electron Mobility Transistors ◽  
High Electron ◽  
Two Dimensional ◽  
High Electron Mobility ◽  
Electron Mobility Transistors
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