Results 91 to 100 of about 2,861 (209)

Late‐Stage Debris Flows Eroded Aeolis Mons in Gediz Vallis, Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract How the ancient climate of Mars transitioned to its current cold, hyperarid state is recorded by the sedimentary rocks preserved on its surface. Gale crater, the Curiosity rover landing site, is one such location, where the central mountain, Aeolis Mons, preserves an extensive sedimentary record. Curiosity has demonstrated that the Aeolis Mons
Joel M. Davis, Sharon A. Wilson, Rebecca M. E. Williams, Lucy M. Thompson, Gerhard Paar, John A. Grant, Aster Cowart, Alex B. Bryk, Sanjeev Gupta, Steven G. Banham, Claire A. Mondro, Edwin S. Kite, Michael C. Malin, Deirdra Fey, Olivier Gasnault, Stéphane Le Mouélic, Ashwin R. Vasavada   +16 more
wiley   +1 more source

Inter-satellite optical wireless system

, 2007
Nowadays, the usage of Optical fibers and optical devices are evolved. Optical system has been used in many applications including space communication, which is satellite communication system.
Mohamad, Abu Bakar, Lela, Siti Norfarawahidatun, Khalid, Amir Masood   +2 more
core  

Research on Topology Management and Routing for Navigation Constellations with Hybrid Laser/Microwave Links

天地一体化信息网络
Hybrid laser/microwave links system can combine the advantages of high speed and low latency of laser links and the stability of microwave links in harsh environments to provide more reliable and efficient communication services for satellite navigation ...
Zhang Xinyi, Zhu Lidong, Li Xintong, Chen Lin, Liu Yuqi, Li Li, Song Kun   +6 more
doaj  

Protracted High‐Grade Metamorphism and Slow Cooling in the Adirondacks Recalibrate Neoproterozoic Global Paleogeography

Tectonics, Volume 45, Issue 6, June 2026.
Abstract The assembly and breakup of the supercontinent Rodinia set the stage for Earth system evolution through the Neoproterozoic Era. Laurentia, the central craton in Rodinia, lacks well‐dated paleomagnetic poles between ca. 990 Ma and 780 Ma. In this study, we develop new U‐Pb petrochronology and thermochronology data sets from zircon, garnet ...
Yiming Zhang, Eben Blake Hodgin, Mark D. Schmitz, Darin M. Schwartz, Michael T. Mohr, James L. Crowley, Nicholas L. Swanson‐Hysell   +6 more
wiley   +1 more source

Evaluation of the Scintillation Loss for Optical Communication Systems with Direct Detection

, 2006
In optical communications through the atmosphere, the evaluation of a link feasibility often requires the quantification of the scintillation penalty in terms of power loss. To find how much additional optical power is needed to reach the bit-error-rate (
Perlot, Nicolas
core  

Achromatic Petal‐Shaped Beam Generation and Information Encoding Based on Perfect Vortex Beam

Nanophotonics, Volume 15, Issue 10, 27 May 2026.
Based on petal‐shaped beams with controllable topological charge, size, and rotation angle, this work employs a spatially multiplexed all‐dielectric TiO2 transmissive array to numerically achieve achromatic petal‐shaped beams at three wavelengths: 480 nm, 530 nm, and 630 nm. Leveraging their unique intensity distribution and rotational characteristics,
Yilong Ge, Yifeng Wei, Jinqin Cui, Ziben Liu, Yang Liu, Bingxue Zhang, Dandan Wen, Peng Li, Sheng Liu, Jianlin Zhao, Dong Li   +10 more
wiley   +1 more source

A Dithio Vinylthio C2 Synthon Enabling Crystalline and Luminescent Sulfur‐Decorated Polymers

Angewandte Chemie International Edition, Volume 65, Issue 22, 25 May 2026.
Transforming CaC2 into a modular C2 building block enables the synthesis of α,ω‐bis(vinylthio) monomer and its conversion into crystalline, sequence‐defined sulfur‐decorated polymers. Their dense thioether clustering induces nonconventional luminescence and provides structure–function control in a more‐sustainable polymer platform.
Bercis Pektas, Cuong M. Q. Le, Samar Hajjar‐Garreau, Simon Gree, Hatice Mutlu   +4 more
wiley   +1 more source

Overview of the inter-orbit and orbit-to-ground laser communication demonstration by OICETS

, 2007
The experiment results on the inter-orbit laser communications between OICETS and a geostationary satellite and the results of two kinds of orbit-to-ground laser communications between OICETS and ground stations are summarized.
Toyoshima, Morio, Bird, Aneurin, Yoshihisa Takayama, Shiratama, Koichi, Kunimori, Hiroo, Demelenne, Benoit, Aneurin Bird, Koichi Shiratama, Jono, Takashi, Benoit Demelenne, Dirk Giggenbach, Perlot, Nicolas, Takashi Jono, Markus Knapek, Giggenbach, Dirk, Morio Toyoshima, Arai, Katsuyoshi, Sodnik, Zoran, Hiroo Kunimori, Takayama, Yoshihisa, Zoran Sodnik, Knapek, Markus, Ichiro Mase, Nicolas Perlot, Mase, Ichiro, Katsuyoshi Arai   +25 more
core   +1 more source

Transformation of DLR's laser communication terminals for CubeSats towards new application scenarios [PDF]

Modern solutions for secure, robust and high-speed satellite communication rely on free-space optical communication in addition to classical radio-frequency channels.
Rödiger, Benjamin, Schmidt, Christopher, Rodeck, Lukas Rupert, Hahn, Marie-Theres   +3 more
core   +1 more source

System Design Analysis of a Lightweight Laser Satellite Terminal

, 1993
This study investigated the technological feasibility of a man- portable satellite laser communications system. Areas of interest were an end- to-end system analysis on the communications link evaluation of atmospheric effects and evaluation of semi ...
Page, Brian C.
core