Results 61 to 70 of about 9,599 (294)

Study on the Optoelectronic Design for Korean Mobile Satellite Laser Ranging System [PDF]

Journal of Astronomy and Space Sciences, 2011
Korea Astronomy and Space Science Institute has been developing one mobile and one stationary satellite laser ranging system for the space geodesy research and precise orbit determination since 2008, which are called as ARGO-M and ARGO-F, respectively.
Hyung-Chul Lim, Seong-Cheol Bang, Sung-Yeol Yu, Yoon-Kyung Seo, Eunseo Park, Kwang Dong Kim, Jakyoung Nah, Jeong Gyun Jang, Bi-Ho Jang, Jang-Hyun Park, Jong-Uk Park   +10 more
doaj   +1 more source

An aperture of 21 cm telescope with polarized coaxial for satellite laser ranging

Frontiers in Physics, 2023
With the development of aerospace and space scientific research, satellite laser ranging (SLR) has put forward higher requirements for response speed, data density, and measurement accuracy. In coaxial common optical path laser ranging, the emitted laser
Mingliang Long, Huarong Deng, Haifeng Zhang, Haifeng Zhang, Kai Tan, Hai sheng Lin, Zhibo Wu, Zhibo Wu, Zhongping Zhang, Zhongping Zhang, Zhongping Zhang   +10 more
doaj   +1 more source

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

Advanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben, Nicolas Gauquelin, Arno Annys, Zhaoliang Liao, Jo Verbeeck, Guus Rijnders, Gertjan Koster   +6 more
wiley   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

Advanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus, Bradlee J. McIntosh, Lili Vajtai, Anna Nyáry, Sándor H. Sipos, Nirmal J. Ghimire, Ferenc Simon, László Forró, Dávid Beke   +8 more
wiley   +1 more source

LARES, laser relativity satellite [PDF]

, 2011
After almost three decades since the first idea of launching a passive satellite to measure gravitomagnetism, launch of LARES satellite is approaching.
D. Spano, PAOLOZZI, Antonio, R. Matzner, SINDONI, GIAMPIERO, VENDITTOZZI, CRISTIAN, C. Vendittozzi, A. Paolozzi, E. Pavlis, R. Neubert, PARIS, Claudio, C. Paris, RAMICONI, MARCELLO, M. Ramiconi, D. Rubincam, D. Arnold, CIUFOLINI, Ignazio, J. Ries, H. Neumayer, G. Sindoni, I. Ciufolini, R. Koenig, V. Slabinski   +21 more
core  

Laser Interferometer Used for Satellite-Satellite Tracking: an On-Ground Methodological Demonstration [PDF]

, 2012
A Chinese satellite gravity mission called SAGM (Space Advanced Gravity Measurements) is now taken into consideration. To meet its designed requirement, the measurement precision of the laser ranging system used to measure the inter-satellite distance ...
李玉琼, Jin, G, 靳刚, 刘河山, 罗子人, 董玉辉, Chinese Acad Sci, Inst Mech, Natl Micrograv Lab NML, Beijing 100190, Peoples R China.   +6 more
core   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Ground-based optical position measurements of space debris in low earth orbits [PDF]

, 2013
The increasing amount of space debris requires the satellite operators to handle a growing number of collision risk assessments in order to eventually perform collision avoidance manoeuvrers.
Hampf, Daniel, Stöckle, Gabriel, Riede, Wolfgang, Buske, Ivo, Völker, Uwe   +4 more
core  

Field tests of astrometric subsystem

Geodesy and Cartography, 2016
The paper presents results of astrometric subsystem’s functionality tests for space object laser ranging and astrometric position determination device, which is under construction in the Institute of Geodesy and Geoinformatics (GGI) of the University of ...
Ansis Zariņš, Diāna Haritonova, Augusts Rubans, Gunārs Silabriedis, Jānis Zvirgzds   +4 more
doaj   +1 more source

Design and Data Processing of China's First Spaceborne Laser Altimeter System for Earth Observation: GaoFen-7

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
The GaoFen-7 (GF-7) satellite, which was launched on November 3, 2019, is China's first civilian submeter stereo mapping satellite. The satellite is equipped with the first laser altimeter officially in China for earth observation.
Junfeng Xie, Genghua Huang, Ren Liu, Chenguang Zhao, Jun Dai, Taoyong Jin, Fan Mo, Ying Zhen, Shaoli Xi, Hongzhao Tang, Xianhui Dou, Chenchen Yang   +11 more
doaj   +1 more source