Results 41 to 50 of about 810,336 (297)

On the role of satellite communications for emergency situations with a focus on Europe [PDF]

open access: yes, 2011
International audienceIn this paper, we describe how satellite communications may contribute to disaster management. During emergency situations, satellite communications present many advantages in supporting or replacing a terrestrial infrastructure (if
Matteo Berioli   +14 more
core   +1 more source

A General Relative Radiometric Correction Method for Vignetting Noise Drift

open access: yesRemote Sensing, 2023
Due to the limitation of the number of sensor pixels, optical splicing is commonly used to improve the imaging width of remote sensing satellites, and this optical stitching can cause vignetting in the image data of adjacent sensors. The weak energy, low
Liming Fan   +6 more
doaj   +1 more source

Satellite to Satellite Visibility [PDF]

open access: yesThe Open Astronomy Journal, 2012
In this paper, general analytical and computational technique for satellite-to-satellite visibility will be established. The developments are general in the sense that the visibility conditions can be used whatever the types of the satellite orbits may be. Numerical applications are also included.
openaire   +1 more source

Research on Multiview Stereo Mapping Based on Satellite Video Images

open access: yesIEEE Access, 2021
In recent years, video satellite technology has greatly developed, and satellite video is captured using this technology. Because video satellites in motion are consistently aimed at certain areas, satellite video is usually composed of a series of frame
Wentao Li   +6 more
doaj   +1 more source

SMI Compatible Simulation Scheduler Design for Reuse of Model Complying with SMP Standard [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2010
Software reusability is one of key factors which impacts cost and schedule on a software development project. It is very crucial also in satellite simulator development since there are many commercial simulator models related to satellite and dynamics.
Cheol-Hea Koo   +2 more
doaj   +1 more source

SATELLITE COMMAND AND CONTROL ARCHITECTURE

open access: yes, 1981
International Telemetering Conference Proceedings / October 13-15, 1981 / Bahia Hotel, San Diego, CaliforniaThis presentation will consist of a review of the DoD common-user Satellite Command & Control network to include: how the AFSCF evolved; a ...
Col. Sanders, J. E.
core   +5 more sources

Performance analysis of the BDSBAS-B1C message in trial operation stage

open access: yesScientific Reports, 2023
BeiDou Satellite-based Augmentation System (BDSBAS) has come into the trial operation stage since July, 2020. To evaluate the characteristic of the augmentation message in BDSBAS-B1C signal, the effectiveness of the message content was firstly analyzed ...
Jie Xin   +8 more
doaj   +1 more source

Method of Tower-less Calibration for Phase Parameter of Tracking System

open access: yesMATEC Web of Conferences, 2015
This paper introduced the principle of angle errors in tracking system. The demodulation was only related to signal envelop, and supported the phase calibration of radio star.
Ge Tiezhi   +4 more
doaj   +1 more source

Experimental Demonstration of High-Security and Low-CSPR Single-Sideband Transmission System Based on 3D Lorenz Chaotic Encryption

open access: yesPhotonics
Broadcast-style downlinks (e.g., PONs and satellites) expose physical waveforms despite transport-layer cryptography, motivating physical-layer encryption (PLE).
Chao Yu   +13 more
doaj   +1 more source

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