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Akademický článek

Novel Time-domain Ultra-wide Band TEM Horn Antenna for Highway GPR Applications

Autor: Yin De, Ye Shengbo, Liu Jinwei, Ji Yicai, Liu Xiaojun, Fang Guangyou

Publikováno v: Leida xuebao, Vol 6, Iss 6, Pp 611-618 (2017)

Based on transmission line theory and impedance transition, we design an ultra-wideband Transverse ElectroMagnetic (TEM) horn antenna that takes advantage of index gradient structure and loading techniques and is optimized for highway Ground Penetrat

Externí odkaz: https://doaj.org/article/0fbb28bdb3fa42a1bde10a4696ec8cf5

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Akademický článek

Optimization Acceleration Integral Method Based on Power Spectrum Estimation

Autor: Guo Ruijie, Ye Shengbo, Ji Yicai

Publikováno v: MATEC Web of Conferences, Vol 176, p 03012 (2018)

Due to the excellent performance of the frequency domain integration method, it is widely used for acceleration integral calculations. However, the frequency-domain integration needs to select the effective integration frequency band to achieve its o

Externí odkaz: https://doaj.org/article/7137ce1494bd4b1c8f79d66c3e7e7b4d

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Akademický článek

An efficient sub-aperture millimeter-wave imaging technique based on boundary-type MIMO array

Autor: Lin, Bo, Li, Chao, Ji, Yicai, Liu, Xiaojun, Fang, Guangyou

Publikováno v: In Signal Processing October 2024 223

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Ground Experiments and Performance Evaluation of the Low-Frequency Radio Spectrometer Onboard the Lander of Chang'e-4 Mission

Autor: Zhu, Xinying, Su, Yan, Ji, Yicai, Zhang, Hongbo, Zhao, Bo, Xue, Xiping, Dai, Shun, Li, Junduo, Li, Chunlai

The Low-Frequency Radio Spectrometer (LFRS) is a scientific payload onboard the Chang'e-4 lunar lander launched in December 2018. The LFRS provides in-situ measurements of the low-frequency radio phenomena on the far-side of the Moon for the first ti

Externí odkaz: http://arxiv.org/abs/2012.04347

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Akademický článek

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Report

Discovering the Sky at the Longest Wavelengths with Small Satellite Constellations

Due to ionosphere absorption and the interference by natural and artificial radio emissions, ground observation of the sky at the decameter or longer is very difficult. This unexplored part of electromagnetic spectrum has the potential of great disco

Externí odkaz: http://arxiv.org/abs/1907.10853

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