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Record Details

Record 18 of 21299
The Deep Space Atomic Clock Mission
External Online Source: hdl:2014/43016
Author and Affiliation:
Ely, Todd A.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Koch, Timothy(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Kuang, Da(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Lee, Karen(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Murphy, David(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Prestage, John(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Tjoelker, Robert(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Seubert, Jill(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Abstract: The Deep Space Atomic Clock (DSAC) mission will demonstrate the space flight performance of a small, low-mass, high-stability mercury-ion atomic clock with long term stability and accuracy on par with that of the Deep Space Network. The timing stability introduced by DSAC allows for a 1-Way radiometric tracking paradigm for deep space navigation, with benefits including increased tracking via utilization of the DSN's Multiple Spacecraft Per Aperture (MSPA) capability and full ground station-spacecraft view periods, more accurate radio occultation signals, decreased single-frequency measurement noise, and the possibility for fully autonomous on-board navigation. Specific examples of navigation and radio science benefits to deep space missions are highlighted through simulations of Mars orbiter and Europa flyby missions. Additionally, this paper provides an overview of the mercury-ion trap technology behind DSAC, details of and options for the upcoming 2015/2016 space demonstration, and expected on-orbit clock performance.
Publication Date: Oct 29, 2012
Document ID:
20150004589
(Acquired Apr 09, 2015)
Subject Category: SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING
Document Type: Conference Paper
Meeting Information: International Symposium on Space Flight Dynamics; 23rd; 29 Oct. - 2 Nov. 2012; Pasadena, CA; United States
Meeting Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 15p; In English; Original contains color illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AUTONOMOUS SPACECRAFT CLOCKS; ATOMIC CLOCKS; DEEP SPACE; SPACE MISSIONS; AUTONOMOUS NAVIGATION; DEEP SPACE NETWORK; SPACE NAVIGATION; RADIO OCCULTATION; ACCURACY; RADIOMETERS; FLYBY MISSIONS
Other Descriptors: NAVIGATION; ATOMIC CLOCK; RADIOMETRIC TRACKING; AUTONOMY
Availability Source: Other Sources
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Last Modified: April 09, 2015
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