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Record Details

Record 99 of 324904
Deriving a unique reference frame for GPS measurements
Author and Affiliation:
Malla, Rajendra P.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Wu, Sien-Chong(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, United States)
Abstract: Two strategies for deriving a unique reference frame for GPS (Global Positioning System) measurements are discussed. The first strategy utilizes the precise relative positions which have been predetermined by VLBI (very long baseline interferometry) to fix the frame orientation and the absolute scaling, while the offset from the geocenter is determined from GPS measurements. Three different cases are presented under this strategy. The second strategy establishes a reference frame by holding only the longitudinal of one of the tracking sites fixed. The absolute scaling is determined by the adopted gravitational constant (GM) of the earth; and the latitude is inferred from the time signature of the earth's rotation in the GPS measurements. The coordinate system thus defined will be a geocentric earth fixed coordinate system. A covariance analysis shows that geometric positioning to an accuracy of a few centimeters can be achieved with just one day of precise GPS pseudorange and carrier phase data.
Publication Date: Jan 01, 1988
Document ID:
19890039343
(Acquired Nov 28, 1995)
Accession Number: 89A26714
Subject Category: SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING
Document Type: Conference Paper
Publication Information: (SEE A89-26701 10-17)
Publisher Information: United States
Meeting Information: PLANS '88 - IEEE Position Location and Navigation Symposium; Nov. 29-Dec. 2, 1988; Orlando, FL; United States
Meeting Sponsor: IEEE
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: EARTH ORBITS; GEOCENTRIC COORDINATES; GEODETIC SATELLITES; GLOBAL POSITIONING SYSTEM; LASER RANGE FINDERS; VERY LONG BASE INTERFEROMETRY; CARTESIAN COORDINATES; COVARIANCE; FRAMES (DATA PROCESSING); SPACEBORNE LASERS
Imprint And Other Notes: IN: PLANS '88 - IEEE Position Location and Navigation Symposium, Orlando, FL, Nov. 29-Dec. 2, 1988, Record (A89-26701 10-17). New York, Institute of Electrical and Electronics Engineers, Inc., 1988, p. 177-184.
Availability Source: Other Sources
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