کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1714682 1519957 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The optical communication link outage probability in satellite formation flying
ترجمه فارسی عنوان
احتمال قطع اتصال پیوند نوری در پرواز ماهواره ای تشکیل شده است
کلمات کلیدی
تشکیل ماهواره پرواز، فاصله یاب لیزری، ارتباطات نوری فضای آزاد، ارتباطات دیجیتال فضایی، یافتن فاصله، لرزش، جورج
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی


• Improving communication to mobile terrestrial and maritime subscribers.
• Using laser link between satellite.
• Satellite formation flaying is considered.
• Deriving an outage probability model of the communication system.
• The model consider pointing vibration and jitter statistics.

In recent years, several space systems consisting of multiple satellites flying in close formation have been proposed for various purposes such as interferometric synthetic aperture radar measurement (TerraSAR-X and the TanDEM-X), detecting extra-solar earth-like planets (Terrestrial Planet Finder-TPF and Darwin), and demonstrating distributed space systems (DARPA F6 project). Another important purpose, which is the concern of this paper, is for improving radio frequency communication to mobile terrestrial and maritime subscribers. In this case, radio frequency signals from several satellites coherently combine such that the received/transmit signal strength is increased proportionally with the number of satellites in the formation. This increase in signal strength allows to enhance the communication data rate and/or to reduce energy consumption and the antenna size of terrestrial mobile users' equipment. However, a coherent combination of signals without aligning the phases of the individual communication signals interrupts the communication and outage link between the satellites and the user. The accuracy of the phase estimation is a function of the inter-satellite laser ranging system performance. This paper derives an outage probability model of a coherent combination communication system as a function of the pointing vibration and jitter statistics of an inter-satellite laser ranging system tool. The coherent combination probability model, which could be used to improve the communication to mobile subscribers in air, sea and ground is the main importance of this work.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 95, February–March 2014, Pages 133–140
نویسندگان
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