Accuracy assessment of lunar topography models
Fok, H.S. and Shum, C.K. and Yuchan, Yi. and Araki, H. and Ping, J. and Williams, J.G. and Fotopoulos, G. and Noda, H. and Goossens, S. and Huang, Q. and Ishihara, Y. and Matsumoto, K. and Oberst, J. and Sasaki, S. (2011) Accuracy assessment of lunar topography models. Earth Planets and Space, 63 (1), pp. 15-23. Terrapub. DOI: 10.5047/eps.2010.08.005. ISSN 1343-8832.
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Official URL: http://www.terrapub.co.jp
Both the Chang'E-1 and SELenological and ENgineering Explorer (SELENE) lunar missions, launched in 2007, provide an opportunity for significant advances in lunar science. In particular, both orbiters provide refined lunar topography models with unprecedented finer resolution and improved accuracy, especially for the far side and the polar areas of the Moon where fewer valid measurements have been available to date. An evaluation of the derived topography models is essential for the improved interpretation of selenophysics, including a knowledge of the interior of the Moon. This study provides both external and internal accuracy assessments for the derived topographic models (note that different data sets are used, albeit independent). The external comparison, which consists of comparing the topographic models with landmarks established with lunar laser ranging and radio tracking, yields an accuracy estimate of 157 m for the Change'E-1 model and 58 m for the SELENE model (150 m and 55 m if the newly recovered Lunakhod-1 site is included). The internal comparison, consisting of crossover analysis of the altimeter data after the removal of once-per-orbital-revolution errors, yields an accuracy estimate of 206 m and 68 m, respectively. These comparisons allow the establishment of conservative estimates of accuracy of 200 m and 70 m for the Chang'E-1 and SELENE models, respectively. Given the conservative estimates on the accuracy, both models yield significant improvement by factors of 2.5 and 8, respectively, when compared with a contemporary lunar topography model, i.e., the Unified Lunar Control Network 2005 (ULCN2005).
|Title:||Accuracy assessment of lunar topography models|
|Date:||21 February 2011|
|Journal or Publication Title:||Earth Planets and Space|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 15-23|
|Keywords:||Accuracy assessment, lunar topography, selenodesy, Chang'E-1, SELENE|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EW - Erforschung des Weltraums|
|DLR - Research area:||Space|
|DLR - Program:||W EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||W - Vorhaben Exploration des Sonnensystems (old)|
|Institutes and Institutions:||Institute of Planetary Research > Planetary Geodesy|
|Deposited By:||Marita Wählisch|
|Deposited On:||17 Nov 2011 12:52|
|Last Modified:||07 Feb 2013 19:40|
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