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Vehicle Motions as Inferred from Radio-signal- Strength RecordsConsiderable data on various parameters of a satellite and its launching vehicle can be obtained from the received-signal-strength records at the various satellite receiver stations. The doppler shifts of the satellite can be used to determine the orbital characteristics quite accurately. (Ref. 1 discusses the rapid determination of these parameters.) Information concerning the velocity increment and direction of each stage can be obtained if doppler data are received by several stations during the high-speed staging. The variations in signal strength during launch can be used to find the spin rate of the satellite before, during, and after staging, and to find variations in attitude, including precession, during launch. With spin and precession frequencies available, any changes in the ratios of moments of inertia can be determined. In this paper the launchings of the Explorer satellites will be used as a basis for the generalized conclusions concerning utilization of radio-signal-strength records. The discussion includes a description of the Explorer launching system.
Document ID
19650073999
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Pilkington, W. C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 2, 2013
Publication Date
September 5, 1958
Subject Category
Launch Vehicles And Launch Operations
Report/Patent Number
JPL-EP-551
Accession Number
65N86402
Funding Number(s)
CONTRACT_GRANT: DA-04-495-ORD-18
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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