Results 71 to 80 of about 6,166,267 (187)

Thermal deformation of 3U CubeSat in low Earth orbit

open access: yesMATEC Web of Conferences, 2018
The impact of uneven heating on a satellite structure in low Earth orbit has been considered using the example of 3U CubeSat. The calculations showed that the thermal deformation of CubeSat structure in orbit caused a deviation between normals to ...
Gorev Vasily   +3 more
doaj   +1 more source

Evaluation of Errors in Digital Terrain Models generated by High Resolution Satellite Images [PDF]

open access: yes, 2010
Nowadays Digital terrain models play very crucial role in many applications, including engineering to design heavy construction project such as dams, tunnels and highways as well as orthophoto production and modeling and visualization in military ...
Saati, Amirreza
core  

Mitigating the Impact of Satellite Vibrations on the Acquisition of Satellite Laser Links Through Optimized Scan Path and Parameters

open access: yesPhotonics
In the past two decades, there has been a tremendous increase in demand for services requiring a high bandwidth, a low latency, and high data rates, such as broadband internet services, video streaming, cloud computing, IoT devices, and mobile data ...
Muhammad Khalid, Wu Ji, Deng Li, Li Kun
doaj   +1 more source

TRC-Based High-Precision Spot Position Detection in Inter-Satellite Laser Communication. [PDF]

open access: yesSensors (Basel), 2020
Li Q   +7 more
europepmc   +1 more source

Integrated photonics for space communication and sensing

open access: yesJPhys Photonics
Integrated photonics takes advantages of size, weight, and power consumption, and can be widely used in space communication and sensing. This paper reviews the typical applications of integrated photonics for space communication and sensing.
Yongjun Guo   +14 more
doaj   +1 more source

2D longitudinal modeling of heat transfer and fluid flow during multilayered [PDF]

open access: yes, 2012
version post-print de l'article : JLA Vol : 24 Iss:3. 2D longitudinal modeling of heat transfer and fluid flow during multilayered direct laser metal deposition processDerived from laser cladding, the Direct Laser Metal Deposition (DLMD) process is ...
CARRON, Denis   +6 more
core  

Reservoir computing-based signal compensation for laser inter-satellite communications

open access: yesScientific Reports
We introduce the reservoir computing (RC) concept into the laser processing unit for the scenario of the inter-satellite communication to mitigate the impacts from the multi-distortion sources, enabling significantly improving the quality of the coherent
Feng Wen   +3 more
doaj   +1 more source

Angle of Arrival for the Beam Detection Method of Spatially Distributed Sensor Array

open access: yesSensors
Laser space networks are an important development direction for inter-satellite communication. Detecting the angle of arrival (AOA) of multiple satellites in a wide field of view (FOV) is the key to realize inter-satellite laser communication networking.
Shan Zhao   +6 more
doaj   +1 more source

Key Technologies and Future Prospects for High Availability of Satellite-Ground Laser Links

open access: yesGuangtongxin yanjiu
Compared with Radio Frequency (RF) communication, satellite-to-ground laser communication offers significant advantages including ultra-large bandwidth, high data rates, enhanced security, and low power consumption.
WANG Jiayi   +4 more
doaj  

Current optical technologies for wireless access [PDF]

open access: yes, 2009
The objective of this paper is to describe recent activities and investigations on free-space optics (FSO) or optical wireless and the excellent results achieved within SatNEx an EU-framework 6th programme and IC 0802 a COST action.
Sheikh Muhammed, S.   +8 more
core  

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