Phase-Coherent Dual-Frequency Link for High-Precision Doppler Tracking on the Apollo-Soyuz Mission

Persistent Link:
http://hdl.handle.net/10150/609348
Title:
Phase-Coherent Dual-Frequency Link for High-Precision Doppler Tracking on the Apollo-Soyuz Mission
Author:
Berg, A. C.; Stiffler, J. J.; Young, D. G.
Affiliation:
Raytheon Co.
Issue Date:
1975-10
Rights:
Copyright © International Foundation for Telemetering
Collection Information:
Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
Publisher:
International Foundation for Telemetering
Journal:
International Telemetering Conference Proceedings
Abstract:
During the Apollo-Soyuz Test Project, a phase-coherent dual-frequency VHF link was scheduled to be established between the Docking Module and the Apollo Command Service Module. The purpose of the radio link was to enable measurements of the relative Doppler between the two modules to an accuracy of the order of one milliHertz. These measurements will be used to detect mass concentrations in the earth's crust of the order of 10 milligal and greater. The transmitter has a high stability master oscillator common to both channels. The receiver has a local oscillator with identical stability characteristics; its two channels employ phase-lock loops. The receiver is followed by a Doppler processor and tape recorder to extract and encode the desired gravity field information. This paper describes the instrumentation system concept and its implementation. It also contains an error budget for the deterioration of the Doppler accuracy due to various instrumental and propagation effects.
Sponsors:
International Foundation for Telemetering
ISSN:
0884-5123; 0074-9079
Additional Links:
http://www.telemetry.org/

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titlePhase-Coherent Dual-Frequency Link for High-Precision Doppler Tracking on the Apollo-Soyuz Missionen_US
dc.contributor.authorBerg, A. C.en
dc.contributor.authorStiffler, J. J.en
dc.contributor.authorYoung, D. G.en
dc.contributor.departmentRaytheon Co.en
dc.date.issued1975-10en
dc.rightsCopyright © International Foundation for Telemeteringen
dc.description.collectioninformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.en
dc.publisherInternational Foundation for Telemeteringen
dc.description.abstractDuring the Apollo-Soyuz Test Project, a phase-coherent dual-frequency VHF link was scheduled to be established between the Docking Module and the Apollo Command Service Module. The purpose of the radio link was to enable measurements of the relative Doppler between the two modules to an accuracy of the order of one milliHertz. These measurements will be used to detect mass concentrations in the earth's crust of the order of 10 milligal and greater. The transmitter has a high stability master oscillator common to both channels. The receiver has a local oscillator with identical stability characteristics; its two channels employ phase-lock loops. The receiver is followed by a Doppler processor and tape recorder to extract and encode the desired gravity field information. This paper describes the instrumentation system concept and its implementation. It also contains an error budget for the deterioration of the Doppler accuracy due to various instrumental and propagation effects.en
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.identifier.issn0884-5123en
dc.identifier.issn0074-9079en
dc.identifier.urihttp://hdl.handle.net/10150/609348en
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.typetexten
dc.typeProceedingsen
dc.relation.urlhttp://www.telemetry.org/en
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