Spin Motion and Orientation of LAGEOS-2 From Photometric Observation

Otsubo, Toshimichi; Sherwood, R. A.; Gibbs, Philip E.; Wood, Roger C.

doi:10.1109/tgrs.2003.817191

Cited by 14 publications

(5 citation statements)

References 7 publications

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“…In the same study, also spin rate observations are reported. Bianco et al [2001] contains independent observations of the LAGEOS-II spin rate, based on a frequency analysis of SLR observations, the results being in perfect agreement with the spin rate observations reported in Otsubo et al [2004]. These data sets have been expanded with observations taken throughout 2002.…”

Section: Lageos-iimentioning

confidence: 67%

“…The technique is explained in detail in , Avizonis [1997], Bianco et al [2001] and Otsubo et al [2004]. In essence, the light of a certain source (Sun, laser beam) is reflected by the Corner Cube Retroreflectors (CCRs) of the satellite, which are oriented in rows.…”

Section: Observationsmentioning

confidence: 99%

“…[19] Spin axis orientation data for LAGEOS-II have been reported in Otsubo et al [2004]. These data are based on an analysis of sunlight reflections by the CCRs.…”

Section: Lageos-iimentioning

confidence: 99%

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Spin axis behavior of the LAGEOS satellites

Andres

Noomen

Bianco³

et al. 2004

J. Geophys. Res.

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[1] The satellites LAGEOS-I and LAGEOS-II are essential for the scientific study of various (geo)physical phenomena, such as geocenter motion and absolute scale. The high quality of such science products strongly depends on the absolute quality of the SLR observations and that of the orbit description. Therefore all accelerations experienced by the spacecraft need to be modeled as accurately as possible, the thermal radiation forces being one of them. Traditionally, this is done by estimating so-called empirical accelerations. However, the rotational dynamics of LAGEOS-I in particular no longer allows such a simple approach: a full modeling of the spin behavior, the temperature distribution over the spacecraft surface and the resulting net force prove necessary to achieve the best results. As a first step, a new model, Lageos Spin Axis Model (LOSSAM) has been developed. It is unique in its combination of analytical theory and empirical observations. Its mathematics is taken after previous investigators, although flaws have been corrected. LOSSAM describes the full spin behavior of LOSSAM based on the following phenomena: (1) the geomagnetic field, (2) the Earth's gravity field, (3) the satellite center of pressure offset, and (4) the effective difference in reflectivity between the satellite hemispheres. Its accuracy has been demonstrated by an improvement of about a 50% in the RMS residual of the Yarkovsky-Schach effect signal (as shown by Lucchesi et al. [2004]). Such a high-quality model for rotational behavior is indispensable for a proper force modeling, and hence also for the quality of typical LAGEOS science products.

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Section: Lageos-iimentioning

confidence: 67%

Section: Observationsmentioning

confidence: 99%

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Spin axis behavior of the LAGEOS satellites

Andres

Noomen

Bianco³

et al. 2004

J. Geophys. Res.

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“…During a single pass the attitude of the satellite with respect to the observation site on the Earth is changing, thus the consecutive rings of the satellite will be the source of the glints. By finding the epoch of change from one ring to another it is possible to determine the spin axis orientation of the body (Otsubo et al, 1998(Otsubo et al, , 2004. This method allows also for spin period determination.…”

Section: Spin Measurement Of Fully Passive Satellitesmentioning

confidence: 99%

Spin axis orientation of Ajisai determined from Graz 2kHz SLR data

Kucharski

Otsubo

Kirchner

et al. 2010

Advances in Space Research

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“…Another important development was the usage of lasers with kHz repetition rate 10 . This allows the identification of individual retroreflectors within the data and the determination of spin and attitude parameters of defunct 11,12 and active [13][14][15] satellites. Since the beginning of the new century laser ranging measurements to space debris objects were performed 16 .…”

mentioning

confidence: 99%

Daylight space debris laser ranging

et al. 2020

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Satellite laser ranging allows to measure distances to satellites equipped with retroreflectors in orbits up to 36000 km. Utilizing a higher powered laser, space debris laser ranging detects diffuse reflections from defunct satellites or rocket bodies up to a distance of 3000 km. So far space debris laser ranging was only possible within a few hours around twilight while it is dark at the satellite laser ranging station and space debris is illuminated by the sun. Here we present space debris laser ranging results during daylight. Space debris objects are visualized against the blue sky background and biases corrected in real-time. The results are a starting point for all space debris laser ranging stations to drastically increase their output in the near future. A network of a few stations worldwide will be able to improve orbital predictions significantly as necessary for removal missions, conjunction warnings, avoidance maneuvers or attitude determination.

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Spin Motion and Orientation of LAGEOS-2 From Photometric Observation

Cited by 14 publications

References 7 publications

Spin axis behavior of the LAGEOS satellites

Spin axis behavior of the LAGEOS satellites

Spin axis orientation of Ajisai determined from Graz 2kHz SLR data

Daylight space debris laser ranging

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