نتایج جستجو برای: geostationary satellite

تعداد نتایج: 80742  

2005
V. A. Levin

* Corresponding author. **This research is supported by the Russian Foundation of Basic Research (grants 03-01-00812, 04-07-90350) and Presidium of Far-East Branch Russian Academy of Sciences. Abstract This paper is devoted to description of some experience in reception and processing satellite information of the Chinese meteorological satellites FengYun. Geostationary satellite FY-2B is an ana...

2013
M. E. Park C. H. Song R. S. Park J. Lee J. Kim S. Lee J.-H. Woo G. R. Carmichael T. F. Eck B. N. Holben S.-S. Lee C. K. Song

A new approach to more accurately monitor and evaluate transboundary particulate matter (PM) pollution is introduced based on aerosol optical products from Korea’s Geostationary Ocean Color Imager (GOCI). The area studied is Northeast Asia (including eastern parts of China, the Korean peninsula and Japan), where GOCI has been monitoring since June 2010. The hourly multi-spectral aerosol optical...

Journal: :J. Field Robotics 2009
Enrico Stoll Ulrich Walter Jordi Artigas Carsten Preusche Philipp Kremer Gerd Hirzinger Jürgen Letschnik Helena Pongrac

In an ideal case telepresence achieves a state, where a human operator can no longer di erentiate between an interaction with a real environment or a technical mediated one. This state is called transparent telepresence. The applicability of telepresence to on-orbit servicing (OOS), i.e. an unmanned servicing operation in space, teleoperated from ground in real time, is veri ed in this paper. F...

1995
Patrick Minnis David R. Doelling

provided assistance in the development of the analysis software and data verification. Summary This document describes the initial formulation (Version 1.0.0) of the Atmospheric Radiation Measurement (ARM) Program satellite data analysis procedures. Techniques are presented for calibrating geostationary satellite data with Sun synchronous satellite radiances and for converting narrowband radian...

2005
Michael A. Lombardi D. Wayne Hanson

NIST ended its Geostationary Operational Environmental Satellites (GOES) time code service at 0 hours, 0 minutes Coordinated Universal Time (UTC) on January 1, 2005. To commemorate the end of this historically significant service, this article provides a retrospective look at the GOES service and the important role it played in the history of satellite timekeeping.

Journal: :Remote Sensing 2015
Aku Riihelä Thomas Carlund Jörg Trentmann Richard Müller Anders V. Lindfors

Accurate determination of the amount of incoming solar radiation at Earth’s surface is important for both climate studies and solar power applications. Satellite-based datasets of solar radiation offer wide spatial and temporal coverage, but careful validation of their quality is a necessary prerequisite for reliable utilization. Here we study the retrieval quality of one polar-orbiting satelli...

2015
Eva Lagunas Shree Krishna Sharma Sina Maleki Symeon Chatzinotas

The impact of including the diffraction loss in the interference modeling on the system throughput is assessed in the context of cognitive Ka-band satellite systems. In particular, we focus on the cognitive satellite downlink, where Geostationary (GEO) Fixed Satellite Service (FSS) terminals receive interference from the incumbent Fixed-Service (FS) microwave links. We present numerical results...

2007
X. Q. Hu N. M. Lu T. Niu P. Zhang

Operational retrieval of Asian sand and dust storm from FY-2C geostationary meteorological satellite and its application to real time forecast in Asia X. Q. Hu, N. M. Lu, T. Niu, and P. Zhang Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites (KLRCV), National Satellite Meteorological Center, China Meteorological Administration (NSMC/CMA), Beijing 100081, Chin...

Journal: :CoRR 2014
Ramoni O. Adeogun

In this paper, we investigated the capacity and bit error rate (BER) performance of Multiple Input Multiple Output (MIMO) satellite systems with single and multiple dual polarized satellites in geostationary orbit and a mobile ground receiving station with multiple antennas. We evaluated the effects of both system parameters such as number of satellites, number of receive antennas, and SNR and ...

1999
Yi Qian Rose Hu Hosame Abu-Amara

We present a simulation approach for assessment of quality of service and bandwidth utilization for a meshed broadband VSAT system over a geostationary (GEO) satellite. The model includes a bent-pipe satellite with a number of broadband VSATs carrying multimedia traffic. A multi-frequency time division multiple access (MF-TDMA) is used with an integrated call admission control (CAC) and bandwid...

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