Damping Control by One-Axis Magnetic Torquer and Gravity Gradient Attitude Stabilization for Small Satellite

Hosokawa, Shigeru; Masumoto, Yoshinari; Takezawa, Susumu; Haneji, Kazuhiko

doi:10.2322/tjsass.49.94

Cited by 2 publications

(1 citation statement)

References 1 publication

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“…Since the successful launching of the first Sputnik-1 satellite on October 4, 1957, many scholars have carried out all kinds of wide-ranging and extensive studies on satellite gravity measurement. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] The Earth's static and timevarying gravitational field can reflect the spatial distribution, movement and alteration of materials on and inside the Earth, and can dominate the undulation and changes of the geoid. Accordingly, investigating the detailed configuration and time-variable characteristics of the Earth's gravitational field not only is required for satellite geodesy, space science, astronautics, geophysics, seismology, oceanography, and so on, but also provides important information for resource exploration, environmental protection and disaster monitoring.…”

Section: Introductionmentioning

confidence: 99%

Efficient Calibration of the Non-Conservative Force Data from the Space-Borne Accelerometers of the Twin GRACE Satellites

Zheng

Hsu

Zhong

et al. 2011

Trans. Japan Soc. Aero. S Sci.

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Different from calibrations previously conducted using the dynamic method, the GRACE-Level-1B non-conservative force data from the space-borne accelerometers between 1 January to 31 December, 2009, released by the Jet Propulsion Laboratory in the United States of America, is for the first time ever effectively calibrated using the priori Earth gravitational field model based on an improved energy conservation principle. The results are shown as follows: 1) The non-conservative force data from the space-borne accelerometers and attitude data from the star camera assembly are basically the same as the anticipated accuracies; 2) the systematic error of the raw non-conservative force data leads to a disturbed geopotential error linear drift of about 0.4 m 2 /s 2 per day, however, the error is only 0.01 m 2 /s 2 using the calibrated non-conservative force data, and a reasonable physical explanation is provided; 3) the advantages and disadvantages of calibrating non-conservative force data using the energy conservation principle and dynamic method are compared in detail; and 4) because the signal of the Earth's gravitational field is sensitive to the systematic error of non-conservative force data from the space-borne accelerometers, the precise calibration of non-conservative force data is a key factor for the highly accurate recovery of the Earth gravitational field with high spatial resolution.

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