Results 151 to 160 of about 93,595 (201)
The Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) Mission Design. [PDF]
Space Sci RevPetrinec SM +21 more
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From Earth to Mars: a perspective on exploiting biomineralization for Martian construction. [PDF]
Front MicrobiolKhoshtinat S, Long-Fox J, Hosseini SMJ.
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The Wuhan Ionospheric Sounding Systems
IEEE Geoscience and Remote Sensing Letters, 2009The ionospheric laboratory of Wuhan University, Wuhan, China, has developed a new ionospheric sounding system for about seven years. The first system is used for ionospheric oblique backscattering detection and is called the Wuhan ionospheric oblique backscattering sounding system (WIOBSS).
Gang Chen, Shuzhu Shi, Guoqiang Zhu
exaly +2 more sources
IEEE Geoscience and Remote Sensing Letters, 2022
Improving the quality of the oblique sounding ionogram under the low transmit power and miniaturized antenna array structure has always been a meaningful research content. Here we try to use the adaptive beamforming technology combined with Wuhan Multi-channel Ionospheric Sounding System (WMISS) to improve the situation effectively.
Xiaoli Zhu, Yaogai Hu, Ting Lan
exaly +2 more sources
Improving the quality of the oblique sounding ionogram under the low transmit power and miniaturized antenna array structure has always been a meaningful research content. Here we try to use the adaptive beamforming technology combined with Wuhan Multi-channel Ionospheric Sounding System (WMISS) to improve the situation effectively.
Xiaoli Zhu, Yaogai Hu, Ting Lan
exaly +2 more sources
A Novel Ionospheric Sounding Radar Based on USRP
IEEE Geoscience and Remote Sensing Letters, 2017Ionospheric sounding is a technique that provides real-time data on high-frequency ionospheric-dependent radio propagation. This letter presents a Universal Software Radio Peripheral-based ionospheric sounding radar, which relies on a basic system consisting of a synchronized transmitter and receiver.
Ziyang Zhao, Huixia Li, Xiaohua Deng
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Spectrally efficient oblique ionospheric sounding
Ninth International Conference on Antennas and Propagation (ICAP), 1995 This paper details some of the recent research and concepts that have been developed within the Communications and Signal Processing Research Consortium at the University of Hull and University of Leeds aimed at providing an embedded ionospheric sounding capability that would exist as a normal function of an adaptive HF radio terminal.
Bartlett, A., Gallagher, M., Darnell, M.
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Flexible, low-cost, ionospheric sounding system
, 1996 An embedded ionospheric sounding facility [1] is used in conjunction with the HF propagation prediction program ICEPAC to identify the modal structure present on ionograms generated from oblique incidence ionospheric soundings. The ionospheric sounding and modal analysis system exists as a normal function of an adaptive HF radio terminal. In particular,
Bartlett, A., Darnell, M., Gallagher, M.
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Radar Soundings of the Ionosphere of Mars
Science, 2005We report the first radar soundings of the ionosphere of Mars with the MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding) instrument on board the orbiting Mars Express spacecraft. Several types of ionospheric echoes are observed, ranging from vertical echoes caused by specular reflection from the horizontally stratified ionosphere to a
D A, Gurnett +10 more
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The 70th anniversary of ionospheric sounding
Engineering Science & Education Journal, 2001Routine sounding of the ionosphere is 70 years old. This article describes its origins, starting from the pioneering trans-Atlantic transmission of 1901, and its development from 1931 to the present day, together with some recent directions in research using ionosonde data.
Rishbeth, H., Davis, C.J.
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Science, 1966
Over the past few years, the satellite topside sounders have significantly contributed to the understanding of the upper ionosphere. A great quantity of radio echo data has been accumulated, from which the ionospheric electron-density distribution can be determined.
openaire +1 more source
Over the past few years, the satellite topside sounders have significantly contributed to the understanding of the upper ionosphere. A great quantity of radio echo data has been accumulated, from which the ionospheric electron-density distribution can be determined.
openaire +1 more source