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Zumberge, J.

Publications and source records attributed to Zumberge, J..

At least 19 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS2001

GPS-assisted GLONASS orbit determination

Using 1 week of data from a network of GPS/ GLONASS dual-tracking receivers, 15-cm accurate GLONASS orbit determination is demonstrated with an approach that combines GPS and GLONASS data.

GLONASS orbit↗
NASA NTRS2000

Precise orbit determination for the shuttle radar topography mission using a new generation of GPS receiver

The BlackJack family of GPS receivers has been developed at JPL to satisfy NASA's requirements for high-accuracy, dual-frequency, Y-codeless GPS receivers for NASA's Earth science missions. In this paper we will present the challenges that were overcome to meet this accuracy requirement. We will discuss the various reduced dynamic strategies, Space Shuttle dynamic models, and our tests for accuracy that included a military Y-code dual-frequency receiver (MAGR).

SRTM GPS orbit↗
NASA NTRS1999

Shortening and Thickening of Metropolitan Los Angeles Measured and Inferred Using Geodesy

Geodetic measurements using the Global Positioning System and other techniques show north-south shortening near Los Angeles to be fastest across the northern part of the metropolitan area, where an ESE-striking, 5- to 40-km-wide belt lying to the south of San Gabriel Mountains and to the north of downtown and West Los Angeles is shortening at 5 mm/yr.

crustal deformation earthquakes Los Angeles earthq↗