Results 21 to 30 of about 832 (152)
Generalized Radar Range Equation Applied to the Whole Field Region
Sensors, 2022 Most terahertz (THz) radar systems can only work in the near-field region, because the THz source power is limited and the size of the target scattered near field is up to tens of kilometers.
Luyin Xiao +4 more
doaj +1 more source
Three-Dimensional Terahertz Continuous Wave Imaging Radar for Nondestructive Testing
IEEE Access, 2020 In recent years, our research group has been devoting substantial efforts to the research and development of active all-solid-state electronic terahertz (THz) continuous wave imaging systems for nondestructive testing, which is currently benefitting from
Xiaoxuan Zhang +3 more
doaj +1 more source
275–305 GHz FM-CW Radar 3D Imaging for Walk-Through Security Body Scanner
Photonics, 2023 Imaging using millimeter waves (MMW) and terahertz (THz) waves can help inspect hazardous materials hidden beneath clothing in a non-contact and non-invasive manner.
Tomofumi Ikari +2 more
doaj +1 more source
MOBILE MAPPING BY FMCW SYNTHETIC APERTURE RADAR OPERATING AT 300 GHZ [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 While optical cameras or laser systems are widely used for mobile mapping low attention was payed for radar systems. Due to new semiconductor technologies, compact and leight weight SAR systems based on the Frequency Modulated Continuous Wave (FMCW ...
S. Palm +5 more
doaj +1 more source
Graphene-Based Magnetically Tunable Broadband Terahertz Absorber
IEEE Photonics Journal, 2022 This study proposes a broadband absorber based on graphene and one-dimensional photonic crystal (1DPC) to achieve magnetically tunable broadband absorption in the terahertz (THz) frequency range.
Zhenyan Wei +4 more
doaj +1 more source
Photonics, 2018 Radomes protecting sensitive radar, navigational, and communications equipment of, e.g., aircraft, are strongly exposed to the environment and have to withstand harsh weather conditions and potential impacts.
Fabian Friederich +9 more
doaj +1 more source
New Vacuum Electronic Devices for Radar
Leida xuebao, 2016 Vacuum Electronic Devices (VEDs) which are considered as the heart of a radar system, play an important role in their development. VEDs and radar systems supplement and promote each other.
Hu Yinfu, Feng Jinjun
doaj +1 more source
Research progress on dynamic regulation of THz wave based on VO2 phase transition characteristics
Dianzi Jishu Yingyong, 2019 The terahertz(THz) wave is located in the transition region of photonics to electronics, and has important application prospects in high-speed broadband communication, radar, imaging and other fields.
Lu Xueguang +3 more
doaj +1 more source
Coherent Integration Loss Due to Nonstationary Phase Noise in High-Resolution Millimeter-Wave Radars
Remote Sensing, 2021 Phase noise refers to the instability of an oscillator, which is the cause of instantaneous phase and frequency deviations in the carrier wave. This unavoidable instability adversely affects the performance of range–velocity radar systems, including ...
Chagai Levy +2 more
doaj +1 more source
Ultralow‐Dispersion Silicon THz Photonic Crystal Interconnects for Multichannel Datalinks
Advanced Materials, EarlyView.An all‐silicon terahertz photonic crystal waveguide interconnect enables 452 Gbps aggregate data transfer through seven complex‐modulated channels. By revealing the impact of ultralow dispersion on link performance and achieving a record interconnect figure of merit, the work advances centimeter‐scale THz on‐chip communication for future data‐centre ...
Nikhil Navaratna +4 more
wiley +1 more source