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Time Transfer Architectures for Smal...

Flood, Christopher W.,

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Time Transfer Architectures for Small Satellite Platforms /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Time Transfer Architectures for Small Satellite Platforms // Christopher W Flood.
作者:	Flood, Christopher W.,
面頁冊數:	1 electronic resource (185 pages)
附註:	Source: Dissertations Abstracts International, Volume: 86-06, Section: A.
Contained By:	Dissertations Abstracts International86-06A.
標題:	Aerospace engineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31562551
ISBN:	9798346876878

Time Transfer Architectures for Small Satellite Platforms /
Flood, Christopher W.,

Time Transfer Architectures for Small Satellite Platforms /Christopher W Flood. - 1 electronic resource (185 pages)

Source: Dissertations Abstracts International, Volume: 86-06, Section: A.

Constellations of small satellites are playing an increasing role in supporting global communication, Earth observation, and positioning, navigation and timing (PNT). All of these applications require some level of accurate timing and frequency control onboard; however, the specific performance requirements differ dramatically. The research in this dissertation describes both radio frequency (RF) and optical techniques to support small satellite applications requiring timing between the nanosecond and femtosecond range. Radio frequency techniques are applied to a low size, weight, and power (SWaP) clock hardware testbed for sub-ns clock comparison between oscillators on separate software defined radio (SDR) platforms. The multi-platform configuration is used to demonstrate extensible timescale formation approaches, with an ensemble realization having frequency stability 1.5e-12 at 10,000 seconds. A second study presents development of a frequency comb-based optical system capable of sub-femtosecond time transfer and nanometer ranging, which can support future astronomical sensing missions. A free space experiment was conducted between the National Institute of Standards and Technology (NIST) and the University of Colorado Boulder to evaluate performance of a reduced SWaP system, which achieved sub-femtosecond time transfer and sub-micrometer ranging precision. Experimental results are comparable to previous NIST laboratory demonstrations, indicating only a minor degradation in precision when reducing SWaP. The research within this thesis outlines radio frequency and optical timekeeping techniques applicable to navigation from future satellite constellations and science missions using clusters of small satellites.

English

ISBN: 9798346876878Subjects--Topical Terms:

1002622
Aerospace engineering.
Subjects--Index Terms:

Small satellites

Time Transfer Architectures for Small Satellite Platforms /
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520 $a Constellations of small satellites are playing an increasing role in supporting global communication, Earth observation, and positioning, navigation and timing (PNT). All of these applications require some level of accurate timing and frequency control onboard; however, the specific performance requirements differ dramatically. The research in this dissertation describes both radio frequency (RF) and optical techniques to support small satellite applications requiring timing between the nanosecond and femtosecond range. Radio frequency techniques are applied to a low size, weight, and power (SWaP) clock hardware testbed for sub-ns clock comparison between oscillators on separate software defined radio (SDR) platforms. The multi-platform configuration is used to demonstrate extensible timescale formation approaches, with an ensemble realization having frequency stability 1.5e-12 at 10,000 seconds. A second study presents development of a frequency comb-based optical system capable of sub-femtosecond time transfer and nanometer ranging, which can support future astronomical sensing missions. A free space experiment was conducted between the National Institute of Standards and Technology (NIST) and the University of Colorado Boulder to evaluate performance of a reduced SWaP system, which achieved sub-femtosecond time transfer and sub-micrometer ranging precision. Experimental results are comparable to previous NIST laboratory demonstrations, indicating only a minor degradation in precision when reducing SWaP. The research within this thesis outlines radio frequency and optical timekeeping techniques applicable to navigation from future satellite constellations and science missions using clusters of small satellites.
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590 $a School code: 0051
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650 4 $a Remote sensing. $3 535394
650 4 $a Communication. $3 524709
653 $a Small satellites
653 $a Positioning, navigation and timing
653 $a Software defined radio
653 $a Earth observation
653 $a National Institute of Standards and Technology
690 $a 0538
690 $a 0459
690 $a 0799
710 2 $a University of Colorado at Boulder. $b Aerospace Engineering. $e degree granting institution. $3 3814664
720 1 $a Axelrad, Penina $e degree supervisor.
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