CCSDS 401.0-B-21.pdf - mtc-m18:80 - Inpe

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CCSDS RECOMMENDATIONS FOR RADIO FREQUENCY AND MODULATION SYSTEMSEarth Stations and SpacecraftCONTENTS (Continued)SECTION TITLE ISSUE PAGENO. DATE NO.4.1 DESIGN TOOLS (Continued)4.1.4 DEFAULT PROBABILITY DENSITY FUNCTIONS FOR LINKCOMPUTATION IN THE CCSDS TELECOMMUNICATIONSLINK DESIGN CONTROL TABLE ............................................... 10-91 4.1.4-14.1.5 COMPUTATIONAL TECHNIQUE FOR THE MEAN ANDVARIANCE OF THE MODULATION LOSSES FOUND INTHE CCSDS TELECOMMUNICATION LINK DESIGNCONTROL TABLE .......................................................................... 10-04 4.1.5-14.2 COMPUTATIONAL ALGORITHMS4.2.1 COMPUTATIONAL METHOD FOR DETERMININGTHE OCCUPIED BANDWIDTH OF UNFILTEREDPCM/PM SIGNALS ......................................................................... 07-06 4.2.1-14.2.2 COMPUTATIONAL METHOD FOR DETERMININGTHE OCCUPIED BANDWIDTH OF UNFILTEREDPCM/PSK/PM MODULATION WITH A SINEWAVESUBCARRIER .................................................................................. 10-04 4.2.2-14.2.3 COMPUTATIONAL METHOD FOR DETERMININGTHE OCCUPIED BANDWIDTH OF UNFILTEREDPCM/PSK/PM MODULATION WITH A SQUAREWAVESUBCARRIER ................................................................................. 10-04 4.2.3-15.0 TERMINOLOGY AND GLOSSARY ................................................ 09-89 5.0-15.1 TERMINOLOGY ............................................................................. 07-06 5.1-15.2 GLOSSARY ...................................................................................... 03-03 5.2-1CCSDS 401 B Page xviii July 2011
CCSDS RECOMMENDATIONS FOR RADIO FREQUENCY AND MODULATION SYSTEMSEarth Stations and Spacecraft1.0 INTRODUCTION1.1 PURPOSEThis document recommends standards for radio frequency and modulation systems operated by theConsultative Committee for Space Data Systems (CCSDS) member and observer agencies.1.2 SCOPERecommendations contained in this document, Radio Frequency and Modulation Systems, Part 1, focusupon the standardization of RF and modulation systems for Earth stations and spacecraft. Part 2, whencompleted, will comprise Recommendations relating to data relay satellite systems. By proposingspecific characteristics and attributes for subjects in these categories, the CCSDS hopes that the ensuingdesigns will be sufficiently similar so as to permit cross support of one agency’s spacecraft by anotheragency’s network.These Recommendations do not provide specific designs. Rather they describe certain capabilities andprovide technical characteristics in sufficient detail so that an agency may design compatible equipment.Guidelines are also provided for the use of agencies’ RF and modulation systems, as well as their use ofthe RF spectrum. Because an ability to provide cross support implies some standardization of design andoperations, certain procedural Recommendations have been included to assist in these areas.Recommendations are assigned to one of three sections depending upon whether their primary focus istechnical, policy, or procedural in nature.These Recommendations are intended to promote an orderly transition to RF and modulation systems thatare internationally compatible. The CCSDS believes that this course will not only assure betterengineering practices but, also, that it will facilitate international cross support agreements.1.3 APPLICABILITYThese Recommendations apply to future implementation of RF and modulation systems. This documentdescribes the physical transport system used to carry data to and from spacecraft and Earth stations.1.4 DOCUMENT FORMATThese introductory remarks are followed by three sections containing technical, policy, and proceduralRecommendations, respectively. Often, it is not obvious to which section a Recommendation belongsbecause it may be concerned with more than one area. The decision usually turns upon whether theprimary focus is quantitative, directive, or instructive.Section 2 contains Technical Recommendations. Following the format established in the CCSDS RF andModulation Report, technical Recommendations are subdivided into groups representing the varioussubsystems. These are:2.1 Earth-to-Space Radio Frequency 2.4 Telemetry2.2 Telecommand 2.5 Radio Metric2.3 Space-to-Earth Radio Frequency 2.6 SpacecraftRecommendations pertaining to each of these subjects are grouped together for easy accessibility. Thisapproach facilitates cross referencing with the Report. If a reader wishes to determine whether an agencyCCSDS 401 B Page 1.0-1 June 1993
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CCSDS 401.0-B-21.pdf - mtc-m18:80 - Inpe

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