Some Aspects of Processing Extraterrestrial Lidar Data: Clementine, Near, Mola
نویسنده
چکیده
The increasing volume of planetary lidar data is creating global datasets of unprecedented resolution and accuracy, and presenting new challenges. From 1971-72, when three Apollo missions carried laser altimeters to the Moon, to the Mars Global Surveyor mission operating the MOLA instrument for nearly 1000 days, the number of planetary ranges has increased by more than 5 orders of magnitude, and accuracy by nearly 3 orders. Significant refinements to orbital and attitude knowledge result from the use of millions of altimetric crossover constraints.
منابع مشابه
Interior of the Near Side Megabasin of the Moon
Introduction: The irregular shape of the Moon may be explained in detail by assuming that a single large impact struck the near side of the Moon and deposited its ejecta on the far side [4], [5], [8], [9]. The impactor would have been very large in order to deposit the 5 kilometer bulge on the far side, perhaps 300 to 600 kilometers in diameter, and the internal basin would have covered more th...
متن کاملSome Aspects about Seismology of 2012 August 11 Ahar-Vaezaghan (Azarbayjan, NW of Persia) Earthquakes Sequences
In 2012 August 11 (12:23 UTC) a moderate earthquake with MW=6.4 (USGS) occurred between Ahar and Varzaghan towns in Azarbayjan Province at northwest of Iran. After eleven minutes another earthquake shook the area with MW=6.2 (USGS). These consecutive earthquakes followed by intensive sequences of aftershocks whereas the strongest one had MW=5.3 (USGS). In data processing including depth modific...
متن کاملSimulation of entrainment near a density stratified layer: Laboratory experiment and LIDAR observation
In this paper a simple qualitative model of the growth of a mixed layer adjacent to a uniform layer with a stably stratified layer is presented. The depth variations of mixed layer can be estimated from direct measurements. The Entrainment of a stably stratified layer into a turbulent mixed layer in a confined region was studied in laboratory for different Richardson numbers. The internal waves...
متن کاملGenerating passive NIR images from active LIDAR
Many modern LIDAR platforms contain an integrated RGB camera for capturing contextual imagery. However, these RGB cameras do not collect a near-infrared (NIR) color channel, omitting information useful for many analytical purposes. This raises the question of whether LIDAR data, collected in the NIR, can be used as a substitute for an actual NIR image in this situation. Generating a LIDAR-based...
متن کاملUsing a Data Metric for Preprocessing Advice
This paper describes research that is performed in the course of a project where a methodology for providing user support for KDD processes plays a central role. Although methodologically we aim at supporting the whole process of applying inductive learning techniques, the current paper fo-cussus on a part of this process. The main issue in this paper is the support of data preprocessing for KD...
متن کامل