Remerciez-le!

Remerciez @Admin pour avoir partagé cet document gratuitement, de la manière la plus simple, en partageant sur les réseaux sociaux.

Satellite network designers guide

Satellite Network Designer ? s Guide This document contains information on the Optus Satellite System and includes descriptions of the ASeries and B-Series satellites The information contained in this document is based on the in-orbit measured performance of the Optus A A and B spacecraft and the pre-launch factory measurements of the B spacecraft This document is Copyright to Optus and may not be re-produced in whole or in part without the prior written consent of Optus Administration Pty Ltd While considerable care has been exercised in compiling this document to ensure the information is correct at time of publication Optus does not accept liability for mistakes omissions interpretations delays errors or defects whatsoever arising from material herein Satellite Network Designer Guide Page of CTable Of Contents Page Introduction Satellite System Management The Optus Satellite Fleet Basic Satellite Summary Ku-Band Communications Payload Satellite Orbital Positions Station Keeping Performance Geostationary Satellites Inclined Orbit Satellites Ku-Band Communications Payload Frequency Plan Frequency Translation Characteristics Satellite Beam Information Receive Beams Transmit Beams Satellite Beam Performance Levels General Design Level Transponder Design Levels Inclined-Orbit Satellites Transponder Gain Control Fixed Gain Mode FGM Variable Gain Mode VGM Amplitude Transfer Characteristics Satellite Cross Polarisation Discrimination Receive Cross Polarisation Discrimination Transmit Cross Polarisation Discrimination L-Band Communications Payload Frequency Plan Frequency Translation Characteristics Description of L-Band Communications Payload L-Band Beam Performance Levels Earth Station Pointing Polarisation Angles and Sun Outages Earth Station Pointing Angles Magnetic Variation Earth Station Polarisation Angles Sun Outages Satellite Beacons Telemetry Beacons Satellite Network Designer Guide Page of C Uplink Power Control Beacon Uplink Power Control Operation Satellite Beam Contours for the Ku-Band Communications Payload A - Receive Gain on Temperature G T A - Transponder Saturated Flux Density SFD A - Radiated EIRP Satellite Beam Contours for the L-Band Payload A - Receive G T A - Radiated EIRP Earth Station Pointing and Polarisation Angles A - Earth Station Pointing Angles A - Magnetic Variation Declination A - Earth Station Polarisation Angles Rain Attenuation Information A - AUSTRALIA DOWNLINK ANNUAL ATTENUATION A - Australia Downlink Worst Month Attenuation A - New Zealand Downlink Annual Attenuation A - New Zealand Downlink Worst Month Attenuation A - Sample Link Budget Calculations A - Types of Transponder Operation A - E ?ects of Rain on Satellite Links A - Designing Satellite Links in the Presence of Rain A - Interference A - EXAMPLE A - EXAMPLE Satellite Network Designer Guide Page of C Introduction Optus Networks operates an Australian domestic satellite system which provides coverage over continental Australia Tasmania and New Zealand Limited options are available whereby coverage is possible of New Guinea Norfolk Island Lord Howe Island Cocos Island and Christmas Island An L-Band payload for mobile satellite services is also carried with coverage of continental Australia and territorial waters This booklet is an overview of the Optus satellite system describing the satellites and their general performance characteristics There are two types of Optus satellite named the A-Series and the BSeries and each is described The