Presentation 1997/2/28
A STUDY ON UP-LINK FREQUENCY CONTROL FOR THE SPACE VLBI MISSION
Jun-ichi SHIMIZU, Noriyuki KAWAGUCHI, Haruto HIROSAWA,
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Abstract(in English) The MUSES-B satellite will be launched for the space VLBI mission in which accurate phase transfer is required. In order to cancel doppler frequency shift due to orbital motion, open-loop frequency control calculated from the predicted orbit will be made. To improve this, We have proposed an algorithm for the closed-loop frequency control, and tested at the link station using the spacecraft simulator. We found that in the orbit except for the perigee, the frequency stability is improved by closed loop control 2-3 times better than open-loop control. However, in the orbit near the perigee, the open-loop frequency control is superior in terms of the effect due to the accelaration change of the gravity field.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Space VLBI / MUSES-B Satellite / Phase Transfer / Frequency Control
Paper # SANE96-96,SAT96-144
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Committee SAT
Conference Date 1997/2/28(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A STUDY ON UP-LINK FREQUENCY CONTROL FOR THE SPACE VLBI MISSION
Sub Title (in English)
Keyword(1) Space VLBI
Keyword(2) MUSES-B Satellite
Keyword(3) Phase Transfer
Keyword(4) Frequency Control
1st Author's Name Jun-ichi SHIMIZU
1st Author's Affiliation College of Science and Technology, Nihon University()
2nd Author's Name Noriyuki KAWAGUCHI
2nd Author's Affiliation National Astronomical Observatory
3rd Author's Name Haruto HIROSAWA
3rd Author's Affiliation The Institute of Space and Astronautical Science
Date 1997/2/28
Paper # SANE96-96,SAT96-144
Volume (vol) vol.96
Number (no) 548
Page pp.pp.-
#Pages 8
Date of Issue