Beamforming with spacecraft under reduced localization and clock constraints

This paper proposes a novel phase synchronization technique that enables beamforming with multiple resource-limited spacecraft in space and capitalizes on their spatial geometry. The proposed technique employs an external beacon to obviate the need for explicit time synchronization and reduces the a...

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Bibliographic Details
Published in:IEEE transactions on aerospace and electronic systems 2016-06, Vol.52 (3), p.1197-1209
Main Authors: Sundaramoorthy, Prem, Gill, Eberhard, Verhoeven, Chris
Format: Article
Language:English
Subjects:
Array signal processing
Beamforming
Delays
Electronic systems
Localization
Measuring instruments
Position (location)
Receivers
Satellite broadcasting
Satellites
Space vehicles
Spacecraft
Synchronism
Synchronization
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Summary:This paper proposes a novel phase synchronization technique that enables beamforming with multiple resource-limited spacecraft in space and capitalizes on their spatial geometry. The proposed technique employs an external beacon to obviate the need for explicit time synchronization and reduces the accuracy requirements on localization. Results show that subcentimeter (subnanosecond)-level phase synchronization can be achieved with localization accuracy in the order of meters.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2016.140635