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  • 1
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    Application of new radio tracking data types to critical spacecraft navigation problems (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: Earth-based radio tracking data types are considered, which involve simultaneous or nearly simultaneous spacecraft tracking from widely separated tracking stations. These data types are conventional tracking instrumentation analogs of the very long baseline interferometry (VLBI) of radio astronomy-hence the name quasi-VLBI. A preliminary analysis of quasi-VLBI is presented using simplified tracking data models. The results of accuracy analyses are presented for a representative mission, Viking 1975. The results indicate that, contingent on projected tracking system accuracy, quasi-VLBI can be expected to significantly improve navigation performance over that expected from conventional tracking data types.
    Keywords: NAVIGATION
    Type: JPL Quart. Tech. Rev., Vol. 1, No. 4; p 116-132
    Format: text
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  • 2
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    Interplanetary orbit determination (1979)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: A general description of the Viking interplanetary orbit determination activity extending from launch to Mars encounter is given. The emphasis is on the technical fundamentals of the problem, basic strategies and data types used, quantitative results, and specific conclusions derived from the inflight experience. Special attention is given to the use of the spacecraft-based optical measurements and their first application as a principal navigational data type for an interplanetary mission. The optical-based orbit determination, in fact, was the primary contributor to the exceptional interplanetary navigation accuracy experienced by both Viking missions. The Viking application of optical orbit determination relied in large part on the technology developed and demonstrated by the Mariner 9 Optical Navigation Demonstration.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Viking Navigation; p 48-108
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  • 3
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    An analytical study of the advantages which differenced tracking data may offer for ameliorating the effects of unknown spacecraft accelerations (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Six parameter model of range-rate observable showing differenced tracking data for improved orbit determination with constant accelerations
    Keywords: COMMUNICATIONS
    Type: The Deep Space Network, Vol. 4; p 61-70
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  • 4
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    Application of differenced tracking data types to the zero declination and process noise problems (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Three parameter model of differenced tracking data types applied to zero declination and process noise problems for improved orbit determination
    Keywords: COMMUNICATIONS
    Type: The Deep Space Network, Vol. 4; p 49-60
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  • 5
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    Viking navigation (1979)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A comprehensive description of the navigation of the Viking spacecraft throughout their flight from Earth launch to Mars landing is given. The flight path design, actual inflight control, and postflight reconstruction are discussed in detail. The preflight analyses upon which the operational strategies and performance predictions were based are discussed. The inflight results are then discussed and compared with the preflight predictions and, finally, the results of any postflight analyses are presented.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-162917 , JPL-PUB-78-38
    Format: application/pdf
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  • 6
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    Application of advanced filtering methods to the determination of the interplanetary orbit of Mariner '71. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-27
    Description: This paper presents the results of the applications of advanced filtering methods to the determination of the interplanetary orbit of the Mariner '71 spacecraft. The advanced techniques are specific extensions of the Kalman filter. The special problems associated with applying these techniques are discussed and the particular algorithmic implementations are outlined. The advanced methods are compared against the weighted least squares filters of conventional application. The results reveal that relatively simple advanced filter configurations yield solutions superior to those of the conventional methods when applied to the Mariner '71 radio measurements.
    Keywords: SPACE SCIENCES
    Type: AIAA PAPER 72-906 , American Institute of Aeronautics and Astronautics and American Astronautical Society, Astrodynamics Conference, Palo Alto; Sept. 11-12, 1972; Palo Alto, CA
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  • 7
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    The determination of the interplanetary orbits of Vikings 1 and 2 (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A description is presented of the navigation-related events of the Viking Mars mission. Orbit determination system fundamentals are discussed, taking into account the trajectory models, observation models, radio data models, range considerations, optical data models, filter models, the orbit determination process, critical orbit determination inputs, and orbit determination errors. Attention is also given to questions of orbit determination strategy, orbit determination results, optical measurements processing, aspects of approach orbit determination evaluation, and the orbit determination software system.
    Keywords: SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING
    Type: AIAA PAPER 77-71 , Aerospace Sciences Meeting; Jan 24, 1977 - Jan 26, 1977; Los Angeles, CA
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  • 8
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    The application of differential VLBI to planetary approach orbit determination (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The application of differential very long baseline interferometry (VLBI) to planetary approach orbit determination is described. VLBI has resulted from the development of multistation tracking techniques and measures spacecraft and nearby extragalactic radio sources. VLBI was found to be at least an order of magnitude improvement over data types currently implemented.
    Keywords: ASTRODYNAMICS
    Type: The Deep Space Network; p 84-90
    Format: text
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  • 9
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    Navigation of the 1982 Jupiter Orbiter Probe mission (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-27
    Description: A new NASA interplanetary flight project, called Jupiter Orbiter Probe (JOP), has been recently approved by Congress. JOP involves a dual mission intended to explore the planet Jupiter and its environment with an atmospheric probe and a planetary orbiter spacecraft. The probe and orbiter vehicles are to be launched in tandem as a single spacecraft during the time from December 1981 to January 1982. The spacecraft will arrive at Jupiter at the earliest on November 14, 1984. Navigating the JOP spacecraft will be a critical task for the JOP mission. Attention is given to aspects of probe and orbiter delivery, Jupiter orbit insertion and perijove raise, the Satellite Tour, navigation development and the navigation system, the probe delivery, example orbits, velocity perturbation and correction, orbit determination characteristics, orbit determination and control profile, and the correction velocity requirements.
    Keywords: ASTRODYNAMICS
    Type: Astrodynamics Specialist Conference; Sept. 7-9, 1977; Jackson Hole, WY; US
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  • 10
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    Guidance and navigation for solar electric interplanetary missions (1970)
    In:  Other Sources
    Details
    Publication Date: 2019-07-27
    Description: Algorithm for trajectory analysis in closed loop terminal guidance of solar electrically thrusted interplanetary spacecraft
    Keywords: NAVIGATION
    Type: AIAA PAPER 70-1152
    Format: text
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