The System Design and Preliminary Tests of the THz Atmospheric Limb Sounder (TALIS)

Xu, Haowen; Lü, Hao; Wang, Zhenzhan; Liu, Jingyi; Wang, Wenyu

doi:10.1109/tim.2021.3135008

Cited by 2 publications

(2 citation statements)

References 34 publications

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“…The larger antenna aperture and the higher frequency will lead to a higher vertical resolution. For example, the THz Atmospheric Limb Sounder (TALIS) (Wang et al, 2020;Xu et al, 2022) has an antenna diameter of 1.6 m, and it has a vertical resolution of about 1 km at 640 GHz and 5.5 km at 118 GHz. The relationship between the antenna size, scanning parameters, and vertical resolution can be found in Eq.…”

Section: Discussionmentioning

confidence: 99%

Feasibility analysis of optimal terahertz (THz) bands for passive limb sounding of middle and upper atmospheric wind

Wang,

Xu,

Wang

2023

Atmos. Meas. Tech.

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Abstract. As of now, direct measurements of middle and upper atmospheric wind are still scarce, and the observation method is limited, especially for the upper stratosphere and lower mesosphere. This paper presents a study of band selection to derive line-of-sight wind from 30 km to more than 120 km using a high-spectral-resolution terahertz (THz) radiometer, which can fill the measurement gap between lidar and interferometer data. Simulations from 0.1–5 THz for evaluating the feasibility of the spaceborne THz limb sounder are described in this study. The results show that high-precision wind (better than 5 m s−1) can be obtained from 40 to 70 km by covering a cluster of strong O3 lines. By choosing strong O2 or H2O lines, the high-quality measurement can be extended to 105 km. The O atom (OI) lines can provide wind signals in the higher atmosphere. In addition, performance of different instrument parameters, including spectral resolution, bandwidth, and measurement noise, was analyzed, and, lastly, four different band combinations are suggested.

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Section: Discussionmentioning

confidence: 99%

Feasibility analysis of optimal terahertz (THz) bands for passive limb sounding of middle and upper atmospheric wind

Wang,

Xu,

Wang

2023

Atmos. Meas. Tech.

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“…THz waves are safe for biological tissue because of low photon energy and non-ionizing attributes, in contrast to X-rays, and promise higher resolution compared with microwave bands [ 3 , 4 ]. The above characteristics of THz waves have promoted THz technology to make great progress in medical detection [ 5 ], security inspection [ 6 ], non-destructive testing [ 7 ], wireless communication [ 8 ], atmospheric monitoring [ 9 ], astronomical observation [ 10 ], and so on. However, the interest in a wide range of commercial THz applications is the main driver for the development of widely accessible room-temperature THz detectors.…”

Section: Introductionmentioning

confidence: 99%

Room-Temperature CMOS Monolithic Resonant Triple-Band Terahertz Thermal Detector

Wang

Yan

et al. 2023

Micromachines

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Multiband terahertz (THz) detectors show great application potential in imaging, spectroscopy, and sensing fields. Thermal detectors have become a promising choice because they could sense THz radiations on the whole spectrum. This paper demonstrates the operation principle, module designs with in-depth theoretical analysis, and experimental validation of a room-temperature CMOS monolithic resonant triple-band THz thermal detector. The detector, which consists of a compact triple-band octagonal ring antenna and a sensitive proportional to absolute temperature (PTAT) sensor, has virtues of room-temperature operation, low cost, easy integration, and mass production. Good experimental results are obtained at 0.91 THz, 2.58 THz, and 4.2 THz with maximum responsivities of 32.6 V/W, 43.2 V/W, and 40 V/W, respectively, as well as NEPs of 1.28 μW/Hz0.5, 2.19 μW/Hz0.5, and 2.37 μW/Hz0.5, respectively, providing great potential for multiband THz sensing and imaging systems.

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The System Design and Preliminary Tests of the THz Atmospheric Limb Sounder (TALIS)

Cited by 2 publications

References 34 publications

Feasibility analysis of optimal terahertz (THz) bands for passive limb sounding of middle and upper atmospheric wind

Feasibility analysis of optimal terahertz (THz) bands for passive limb sounding of middle and upper atmospheric wind

Room-Temperature CMOS Monolithic Resonant Triple-Band Terahertz Thermal Detector

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