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NASA-LLIS-1390

Lessons Learned – Test Telecommunications Links End-to-End, and Don't Forget the Doppler (2000)

contributor authorNASA - National Aeronautics and Space Administration (NASA)
date accessioned2017-09-04T17:51:59Z
date available2017-09-04T17:51:59Z
date copyright01/12/2004
date issued2004
identifier otherFAWEQCAAAAAAAAAA.pdf
identifier urihttp://yse.yabesh.ir/std/handle/yse/175203
description abstractAbstract:
A mission-critical error was discovered in the communications link between the Cassini spacecraft and its Huygens probe when it was determined that the radio frequencies would not adjust for Doppler effect. This parameter was not isolated during the pre-launch verification process. The recommendations affirm the need for (1) end-to-end testing of communications links, (2) a high fidelity telecommunications testbed, and (3) referencing Doppler effects on subcarriers in an appropriate procedure.
languageEnglish
titleNASA-LLIS-1390num
titleLessons Learned – Test Telecommunications Links End-to-End, and Don't Forget the Doppler (2000)en
typestandard
page3
statusActive
treeNASA - National Aeronautics and Space Administration (NASA):;2004
contenttypefulltext
subject keywordsCommunication Systems
subject keywordsdesign margin
subject keywordsFacilities
subject keywordsfault tolerance
subject keywordsFlight Operations
subject keywordsflight readiness
subject keywordsHardware
subject keywordsIndependent Verification and Validation
subject keywordsinternational partnering
subject keywordslink analysis
subject keywordsRF simulations
subject keywordsSafety & Mission Assurance
subject keywordsSpacecraft
subject keywordssubcarrier test
subject keywordstelecommunications design
subject keywordstelecommunications failure modes
subject keywordstelecommunications subcarrier
subject keywordsTest & Verification
subject keywordstest and integration
subject keywordsTest Facility
subject keywordsuplink design


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