Results 61 to 70 of about 346,454 (233)

LEO Multi-Satellite Coordination and Satellite-Ground Coordination Remote Sensing Communication and Computation Integration Technology

open access: yes天地一体化信息网络
Firstly, the current situation of satellite remote sensing, communication, and computing systems was systematically analyzed, and the real-time remote sensing dilemma existing in the traditional satellite remote sensing systems and the satellite remote ...
Zhongyuan JIANG   +8 more
doaj   +2 more sources

Definition phase of Grand Tour missions/radio science investigations study for outer planets missions [PDF]

open access: yes
Scientific instrumentation for satellite communication and radio tracking systems in the outer planet exploration mission is discussed. Mission planning considers observations of planetary and satellite-masses, -atmospheres, -magnetic fields, -surfaces, -
Tyler, G. L.
core   +1 more source

Passive Radar Using LEO Communication Satellite Signals: An Overview and Prospect

open access: yesLeida xuebao
Compared to ground-based external radiation source radar, satellite signal-based external radiation source radar (i.e., satellite signal external radiation source radar) offers advantages such as global, all-time, and all-weather coverage, which can ...
Hongwei FU   +6 more
doaj   +1 more source

Frequency stabilization for mobile satellite terminals via LORAN [PDF]

open access: yes
Digital satellite communication systems require careful management of frequency stability. Historically, frequency stability has been accomplished by continuously powered, high cost, high performance reference oscillators.
Ernst, Gregory J.   +2 more
core   +1 more source

The 30/20 GHz communications system functional requirements [PDF]

open access: yes
The characteristics of 30/20 GHz usage in satellite systems to be used in support of projected communication requirements of the 1990's are defined. A requirements analysis which develops projected market demand for satellite services by general and ...
Frankfort, M.   +3 more
core   +1 more source

Integration of 5G, 6G and IoT with Low Earth Orbit (LEO) networks: Opportunity, challenges and future trends

open access: yesResults in Engineering
The rapid growth of the massive smart Internet of Things (IoT) with mobile connections, the enhanced Mobile Broadband (eMBB) and the high demand for building a connected and intelligent world increase the probability of mobile satellite systems to be a ...
Ibraheem Shayea   +6 more
doaj   +1 more source

Study of spread spectrum multiple access systems for satellite communications with overlay on current services [PDF]

open access: yes
The feasibility of using spread spectrum techniques to provide a low-cost multiple access system for a very large number of low data terminals was investigated.
Ha, Tri T., Pratt, Timothy
core   +1 more source

Intelligent fault isolation and diagnosis for communication satellite systems [PDF]

open access: yes
Discussed here is a prototype diagnosis expert system to provide the Advanced Communication Technology Satellite (ACTS) System with autonomous diagnosis capability.
Durkin, John   +2 more
core   +1 more source

Structural Analysis of Digital Transceiver Unit (DTU) for 400kg-Class Communication Satellite Considering Launch Environment

open access: yesIEEE Access
Since Starlink’s introduction, global social and technical demands for satellite-based telecommunication systems have rapidly increased. In South Korea as well, research on communication satellites began several years ago.
Hyun-Guk Kim   +6 more
doaj   +1 more source

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