Matches in SemOpenAlex for { <https://semopenalex.org/work/W1635095902> ?p ?o ?g. }
Showing items 1 to 84 of
84
with 100 items per page.
- W1635095902 abstract "Future space applications are likely to rely heavily on Ka-band frequencies (20-40 GHz) for communications traffic. Many space research activities are now conducted using S-band and X-band frequencies, which are becoming congested and require a degree of pre-coordination. In addition to providing relief from frequency congestion, Ka-band technologies offer potential size, weight, and power savings when compared to lower frequency bands. The use of the 37.0-37.5 and 40.0-40.5 GHz bands for future planetary missions was recently approved at the 1992 World Administrative Radio Conference (WARC-92). WARC-92 also allocated the band 25.25-27.5 GHz to the Intersatellite Service on a primary basis to accommodate Data Relay Satellite return link requirements. Intersatellite links are defined to be between artificial satellites and thus a communication link with the surface of a planetary body, such as the moon, and a relay satellite orbiting that body are not permitted in this frequency band. This report provides information about preliminary communications system concepts for forward and return links for earth-Mars and earth-lunar links using the 37.0-37.5 (return link) and 40.0-40.5 (forward link) GHz frequency bands. In this study we concentrate primarily on a conceptual system for communications between earth and a single lunar surface terminal (LST), and between earth and a single Mars surface terminal (MST). Due to large space losses, these links have the most stringent link requirements for an overall interplanetary system. The earth ground station is assumed to be the Deep Space Network (DSN) using either 34 meter or 70 meter antennas. We also develop preliminary communications concepts for a space-to-space system operating at near 26 GHz. Space-to-space applications can encompass a variety of operating conditions, and we consider several 'typical' scenarios described in more detail later in this report. Among these scenarios are vehicle-to-vehicle communications, vehicle-to-geosyncronous satellite (GEO) communications, and GEO-to-GEO communications. Additional details about both the interplanetary and space-to-space communications systems are provided in an 'expanded' final report which has been submitted to the Tracking and Communications Division (TCD) at the NASA Johnson Space Center." @default.
- W1635095902 created "2016-06-24" @default.
- W1635095902 creator A5080358970 @default.
- W1635095902 date "1993-12-01" @default.
- W1635095902 modified "2023-09-27" @default.
- W1635095902 title "Conceptual communications system design in the 25.25-27.5 and 37.0-40.5 GHz frequency bands" @default.
- W1635095902 hasPublicationYear "1993" @default.
- W1635095902 type Work @default.
- W1635095902 sameAs 1635095902 @default.
- W1635095902 citedByCount "0" @default.
- W1635095902 crossrefType "journal-article" @default.
- W1635095902 hasAuthorship W1635095902A5080358970 @default.
- W1635095902 hasConcept C101765175 @default.
- W1635095902 hasConcept C121308736 @default.
- W1635095902 hasConcept C121332964 @default.
- W1635095902 hasConcept C127313418 @default.
- W1635095902 hasConcept C127413603 @default.
- W1635095902 hasConcept C146978453 @default.
- W1635095902 hasConcept C163258240 @default.
- W1635095902 hasConcept C187107819 @default.
- W1635095902 hasConcept C19269812 @default.
- W1635095902 hasConcept C21822782 @default.
- W1635095902 hasConcept C2777720951 @default.
- W1635095902 hasConcept C2778116611 @default.
- W1635095902 hasConcept C2778156585 @default.
- W1635095902 hasConcept C2779664074 @default.
- W1635095902 hasConcept C29829512 @default.
- W1635095902 hasConcept C41008148 @default.
- W1635095902 hasConcept C62520636 @default.
- W1635095902 hasConcept C62649853 @default.
- W1635095902 hasConcept C76155785 @default.
- W1635095902 hasConcept C83260615 @default.
- W1635095902 hasConcept C87355193 @default.
- W1635095902 hasConcept C92545706 @default.
- W1635095902 hasConceptScore W1635095902C101765175 @default.
- W1635095902 hasConceptScore W1635095902C121308736 @default.
- W1635095902 hasConceptScore W1635095902C121332964 @default.
- W1635095902 hasConceptScore W1635095902C127313418 @default.
- W1635095902 hasConceptScore W1635095902C127413603 @default.
- W1635095902 hasConceptScore W1635095902C146978453 @default.
- W1635095902 hasConceptScore W1635095902C163258240 @default.
- W1635095902 hasConceptScore W1635095902C187107819 @default.
- W1635095902 hasConceptScore W1635095902C19269812 @default.
- W1635095902 hasConceptScore W1635095902C21822782 @default.
- W1635095902 hasConceptScore W1635095902C2777720951 @default.
- W1635095902 hasConceptScore W1635095902C2778116611 @default.
- W1635095902 hasConceptScore W1635095902C2778156585 @default.
- W1635095902 hasConceptScore W1635095902C2779664074 @default.
- W1635095902 hasConceptScore W1635095902C29829512 @default.
- W1635095902 hasConceptScore W1635095902C41008148 @default.
- W1635095902 hasConceptScore W1635095902C62520636 @default.
- W1635095902 hasConceptScore W1635095902C62649853 @default.
- W1635095902 hasConceptScore W1635095902C76155785 @default.
- W1635095902 hasConceptScore W1635095902C83260615 @default.
- W1635095902 hasConceptScore W1635095902C87355193 @default.
- W1635095902 hasConceptScore W1635095902C92545706 @default.
- W1635095902 hasLocation W16350959021 @default.
- W1635095902 hasOpenAccess W1635095902 @default.
- W1635095902 hasPrimaryLocation W16350959021 @default.
- W1635095902 hasRelatedWork W1480853769 @default.
- W1635095902 hasRelatedWork W1507788235 @default.
- W1635095902 hasRelatedWork W1552922369 @default.
- W1635095902 hasRelatedWork W1666510773 @default.
- W1635095902 hasRelatedWork W1901979488 @default.
- W1635095902 hasRelatedWork W1965638417 @default.
- W1635095902 hasRelatedWork W2024486008 @default.
- W1635095902 hasRelatedWork W2034966720 @default.
- W1635095902 hasRelatedWork W2037160255 @default.
- W1635095902 hasRelatedWork W2044516367 @default.
- W1635095902 hasRelatedWork W2058444093 @default.
- W1635095902 hasRelatedWork W2316875535 @default.
- W1635095902 hasRelatedWork W2783990293 @default.
- W1635095902 hasRelatedWork W2997423802 @default.
- W1635095902 hasRelatedWork W3000871828 @default.
- W1635095902 hasRelatedWork W3116096185 @default.
- W1635095902 hasRelatedWork W3128182422 @default.
- W1635095902 hasRelatedWork W3210723808 @default.
- W1635095902 hasRelatedWork W853357230 @default.
- W1635095902 hasRelatedWork W3117082613 @default.
- W1635095902 hasVolume "2" @default.
- W1635095902 isParatext "false" @default.
- W1635095902 isRetracted "false" @default.
- W1635095902 magId "1635095902" @default.
- W1635095902 workType "article" @default.