Results 81 to 90 of about 423,477 (202)

Optical communication with semiconductor laser diodes [PDF]

A 25 megabit/sec direct detection optical communication system that used Q=4 PPM signalling was constructed and its performance measured under laboratory conditions.
Davidson, F.
core   +2 more sources

Parametric analysis of microwave and laser systems for communication and tracking. Volume 2 - System selection [PDF]

System selection criteria of microwave and laser systems for communication and tracking - Vol.
Brinkman, K. L., Kalil, F., Stokes, L. S.   +2 more
core   +1 more source

A Laser Communication System

The Journal of the Institute of Television Engineers of Japan, 1966
日本電気株式会社無線通信事業部において行なわれたレーザーによるテレビジョンの屋外伝送の研究を紹介, He-Neレーザーの諸特性, レーザービームの集束, 光の変調および復調, レーザー光の大気中の伝搬特性などとともに, 屋外1kmのテレビジョン伝送実験の結果も報告されている.
Michiaki Ito, Teiji Uchida, Motoaki Frukawa, Katsuhiro Ishiwata, Noriaki Sekiguchi, Atsufumi Ueki   +5 more
openaire   +2 more sources

Balloon atmospheric propagation experiment measurements [PDF]

High altitude balloon measurements on laser beam fading during propagation through turbulent atmosphere show that a correlation between fading strength and stellar scintillation magnitudes exists.
Minott, P. O.
core   +1 more source

An Analytical Method for Solar Heat Flux in Spacecraft Thermal Management Under Multidimensional Pointing Attitudes

Energies
In order to provide a theoretical basis for the thermal analysis and management of spacecraft/payload interstellar pointing attitudes, which are used for inter-satellite communication, this paper develops an analytical method for solar heat flux under ...
Xing Huang, Tinghao Li, Hua Yi, Yupeng Zhou, Feng Xu, Yatao Ren   +5 more
doaj   +1 more source

Free space laser communications [PDF]

Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Edition. CLEO '99. Conference on Lasers and Electro-Optics (IEEE Cat. No.99CH37013), 1999
Summary form only given. Increased data transfer demands, limited RF spectral allocations, and emphasis on smaller spacecraft platforms to keep launch costs down are forcing space mission planners to consider free-space optical communications for their space-ground and intersatellite communications links.
openaire   +1 more source

A Novel Scanning and Acquisition Method of Optical Phased Array for Space Laser Communication

Photonics
To meet the requirements of non-mechanical beam scanning and acquisition in space laser communication, this study proposes a two-dimensional scanning and acquisition method based on a silicon-based optical phased array (OPA).
Ye Gu, Xiaonan Yu, Rui Weng, Guosheng Fan, Penglang Wang, Quanhan Wang, Naiyuan Liang, Dewang Liu, Shuai Chang, Dongxu Jiang, Shoufeng Tong   +10 more
doaj   +1 more source

An ERPNS Technology Based on OFDR for Accurate Arm-Length Difference Measurement of Optical Fiber Interferometer Under Dynamic Environment

IEEE Photonics Journal
Accurate measurement of interferometer arm-length difference is very important in the application fields such as fiber optic hydrophones. However, the interferometer is very sensitive to the environmental vibration and noise, which affects the accuracy ...
Luwei Shuai, Lei Ye, Qing Ye
doaj   +1 more source

CTPMSN: Enhancing Multimodal Remote Sensing Classification With Composite Text Prompts

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Remote sensing multimodal data integrates information from various sensors, providing detailed characterization and reliable monitoring capabilities for Earth observation tasks. This data is crucial in environmental surveillance, disaster assessment, and
Aili Wang, Shiyu Dai, Haibin Wu, Haoran Lv, Siqi Yan, Minhui Wang   +5 more
doaj   +1 more source

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

Sensors (Basel), 2020
Li Q, Guo H, Xu S, Xu Y, Wang Q, He D, Peng Z, Huang Y.   +7 more
europepmc   +1 more source