The Space Communications and Navigation (SCaN) program places the three prime NASA space communications networks, Space Network (SN), Near Earth Network (NEN) (previously known as the Ground Network or GN), and the Deep Space Network (DSN), under one Management and Systems Engineering umbrella. It was established in 2006. It was previously known as the Space Communications & Data Systems (SCDS) Program.
Technicians at NASA Glenn Research Center at work on the Space Communications and Navigation Testbed, formerly known as the Communications, Navigation, and Networking reConfigurable Testbed (CoNNeCT) project[1]
Before NASA's administrator Michael D. Griffin created SCaN to direct an integrated networks program, different organizations at NASA Headquarters have managed the Agency's space communications capabilities and functions under separate Programs using a variety of administrative approaches.[2]
The SCaN Office was established by direction of Griffin in a Memorandum entitled "Establishment of a Space Communications and Navigation Office," dated July 19, 2006.[3] SCaN operates as a central organization within the Human Exploration and Operations Mission Directorate (HEOMD):
The Office's responsibilities encompass the management of existing space networks including the Tracking and Data Relay Satellite system, the Deep Space Network, the Ground Network, the NASA Integrated Services Network; implementing any improvements and upgrades to those systems and networks; and developing any future NASA communications and navigation architectures.
The Ground Network (GN) has since been renamed the Near Earth Network.
Services
SCaN is viewed as a service provider supporting interfaces and performing a standard set of functions, including:[4]
^NASA. Space Communications and Navigation (SCaN) Program Plan. National Aeronautics and Space Administration.
^NASA (January 30, 2009). SCaN Systems Engineering Management Plan (SEMP). NASA Space Communication and Navigation Program Office. SCaN-SEMP.
^NASA (June 28, 2008). Constellation Design Reference Missions And Operational Concepts (ConOps), Annex 1: Constellation Communications and Tracking Concept of Operations (Baseline ed.). National Aeronautics and Space Administration. CxP 70007, ConOps.
^NASA, Exploration and Space Communications Projects Division; Goddard Space Flight Center (August 2007). Space Network User's Guide (SNUG), 2.3, Elements of the SN (Rev 9 ed.). National Aeronautics and Space Administration. 450-SNUG.
^NASA, Exploration and Space Communications Projects Division; Goddard Space Flight Center (August 2007). Space Network User's Guide (SNUG), 6.2 SSA Forward Services, and 6.2.3 Phase Modulation (PM) Signal Parameters (Rev 9 ed.). National Aeronautics and Space Administration. 450-SNUG.
^NASA, Exploration and Space Communications Projects Division; Goddard Space Flight Center (August 2007). Space Network User's Guide (SNUGx) (Rev 9 ed.). National Aeronautics and Space Administration. 450-SNUG.
External links
NASA.gov
February 26, 2023
space, communications, navigation, program, space, communications, navigation, scan, program, places, three, prime, nasa, space, communications, networks, space, network, near, earth, network, previously, known, ground, network, deep, space, network, under, ma. The Space Communications and Navigation SCaN program places the three prime NASA space communications networks Space Network SN Near Earth Network NEN previously known as the Ground Network or GN and the Deep Space Network DSN under one Management and Systems Engineering umbrella It was established in 2006 It was previously known as the Space Communications amp Data Systems SCDS Program Technicians at NASA Glenn Research Center at work on the Space Communications and Navigation Testbed formerly known as the Communications Navigation and Networking reConfigurable Testbed CoNNeCT project 1 Contents 1 History 2 Services 3 Communications schemes 3 1 Spectra 3 2 Modulation 3 3 Encoding 4 See also 5 References 6 External linksHistory EditBefore NASA s administrator Michael D Griffin created SCaN to direct an integrated networks program different organizations at NASA Headquarters have managed the Agency s space communications capabilities and functions under separate Programs using a variety of administrative approaches 2 The SCaN Office was established by direction of Griffin in a Memorandum entitled Establishment of a Space Communications and Navigation Office dated July 19 2006 3 SCaN operates as a central organization within the Human Exploration and Operations Mission Directorate HEOMD The Office s responsibilities encompass the management of existing space networks including the Tracking and Data Relay Satellite system the Deep Space Network the Ground Network the NASA Integrated Services Network implementing any improvements and upgrades to those systems and networks and developing any future NASA communications and navigation architectures The Ground Network GN has since been renamed the Near Earth Network Services EditSCaN is viewed as a service provider supporting interfaces and performing a standard set of functions including 4 Forward data transfer uplink to spacecraft Return data transfer downlink from spacecraft to ground Dissimilar voice communications Emergency communications Post landing communications Radiometric measurement Time correlation Service monitoring Ephemeris exchange Operational coordination Service scheduling Communications schemes EditCommunications with spaceborne platforms is performed by RF with a selection of spectra modulation and encoding methods enumerated below Spectra Edit The Space Network communicates with spacecraft using S band Ku band 5 and Ka band with planned laser optical communications The Deep Space Network communicates with spacecraft using S band X band and Ka band Modulation Edit SN uses phase shift keying and phase modulation of the carrier signal 6 Encoding Edit The Space Network used for near Earth communications supports the following encoding schemes 7 BPSK QPSK SQPSK 8PSK Rate 1 2 convolutional coding SQPN PRN coding used to reduce power spectral density for low bit rate signals and for time transfer The Reed Solomon method is used as the initial error correcting block code prior to the selected secondary encoding scheme See also EditIndian Deep Space Network Tracking and Data Relay Satellite Eastern Range NASCOMReferences Edit SCaN Testbed homepage at NASA Glenn Research Center NASA Space Communications and Navigation SCaN Program Plan National Aeronautics and Space Administration NASA January 30 2009 SCaN Systems Engineering Management Plan SEMP NASA Space Communication and Navigation Program Office SCaN SEMP NASA June 28 2008 Constellation Design Reference Missions And Operational Concepts ConOps Annex 1 Constellation Communications and Tracking Concept of Operations Baseline ed National Aeronautics and Space Administration CxP 70007 ConOps NASA Exploration and Space Communications Projects Division Goddard Space Flight Center August 2007 Space Network User s Guide SNUG 2 3 Elements of the SN Rev 9 ed National Aeronautics and Space Administration 450 SNUG NASA Exploration and Space Communications Projects Division Goddard Space Flight Center August 2007 Space Network User s Guide SNUG 6 2 SSA Forward Services and 6 2 3 Phase Modulation PM Signal Parameters Rev 9 ed National Aeronautics and Space Administration 450 SNUG NASA Exploration and Space Communications Projects Division Goddard Space Flight Center August 2007 Space Network User s Guide SNUGx Rev 9 ed National Aeronautics and Space Administration 450 SNUG External links EditNASA gov Retrieved from https en wikipedia org w index php title Space Communications and Navigation Program amp oldid 1102866281, wikipedia, wiki, book, books, library,
