Intelligent Robotics Group NASA Ames Research Center Intelligent Robotics Group NASA Ames Research Center Planning for the Mapping and Exploration of Human and Robotic Missions to Small Bodies

Intelligent Robotics Group NASA Ames Research Center Mission Scenarios Rendezvous (target acquisition, approach, mapping) - includes orbiting, hovering, slow hyperbolic flybys days in close formation - deal with debris around the body - objectives: “real-time” shape/terrain/gravity/density models to support docking/landing Docking/Anchoring and Landing - match the dynamics of the NEA - requires good compaction/density/mechanical stability of the terrain - crew tethered to spacecraft or surface - moving surface materials can impact the safety of the crew - surface operations using impactors- remote or drills -in-situ) - objectives: very high resolution mapping and prepare for sample return Sample return - sites are identified based on scientific interest and safety criteria - sample collection may perturb the environment

Intelligent Robotics Group NASA Ames Research Center Requirements

Intelligent Robotics Group NASA Ames Research Center Mission Data PhobosDeimos Eros (NEAR Shoemaker 98, 00) Vesta (Dawn 2011) Tempel 1(Deep Impact 2005, Stardust 2011) Ceres (Hubble)Itokawa (Hayabusa 2005)

Intelligent Robotics Group NASA Ames Research Center Geographos (Goldstone radar, CA, 1994) Mathilde (NEAR Shoemaker 97)Annefrank (Stardust 02)Comet Wild2 (Stardust 04) Ida (Galileo 93)Gaspra (Galileo 91) Mission Data

Intelligent Robotics Group NASA Ames Research Center Existing Data

Intelligent Robotics Group NASA Ames Research Center Simulation/Processing Tools Small Body Visualization developed tool at Applied Physics Laboratory - ISIS developed by USGS - Ames Stereo Pipeline: ARC - Vision Workbench: ARC - Shape Models: Stereo Photoclinometry, etc. Viz, Verve developed at ARC

Intelligent Robotics Group NASA Ames Research Center Data Product Recommendations Small Planetary Body Mapping Standard Development True 3D Projection Support Eros surface reference system Small Body Dynamic Model - spin period - axis of rotation - perturbations due to solar radiations, debris or satellites Eros shape model

Intelligent Robotics Group NASA Ames Research Center Shape Models - flyby image data - radar measurements - critical to mass/gravity/density/porosity models Lidar topography map on Eros Data Product Recommendations Digital Terrain Models - Global DTM maps (stereo) - Local Maps (photoclinometry) - DTM accuracy precision maps - Lidar maps Image and Albedo Mosaics - simulate imagery under arbitrary illumination conditions - understand the surface properties Eros shape model - radar Control network - visual feature extraction, matching, image-lidar alignment

Intelligent Robotics Group NASA Ames Research Center Data Product Recommendations Radio Science Products - Mass estimates (spacecraft trajectory) - Gravity field - Density (from mass and volumetric meas.) - Porosity (from volumetric and density meas.) Subsurface Radar Maps - Synthetic aperture radar (sub meter range) - Ground penetrating radar Eros gravity field map (Bouguer’s map)Gravitational slopes of 1999 KW4-Alpha Critical for refining close operations and surface activity

Intelligent Robotics Group NASA Ames Research Center Data Product Recommendations Thermal Inertia Map Elemental composition on Eros from Gamma Ray spectrometer Mineralogical (Multispectral - UV and infra red) Maps - infrared maps determine location of surface materials (metals, silicates, olivines, etc) - UV spectra detects debris field in the close vicinity of the body - used with topography, albedo, thermal maps NEAR infrared spectrometer measurements - presence of rocks under the surface

Intelligent Robotics Group NASA Ames Research Center Recommendations Data Matching Products - determine similarities between sites on same NEO or among different NEO Content based Planetary Data Mining ARC

Intelligent Robotics Group NASA Ames Research Center Fully automatic geodetical control of the entire data available Generation of standard coordinate systems and coordinate frames Improved accuracy solutions for stereo photoclinometry Multi-view (instead of stereo) 3D terrain reconstruction Lidar and image co-registration for accurate camera position estimation Real-time fully automatic crew and rover localization High resolution albedo maps High accuracy DTM to properly project multispectral and mineralogical data Tools to determine in simultaneous solutions the spacecraft position and pointing and body size, shape, mass and gravity field Data Processing Gaps for Small Bodies

Intelligent Robotics Group NASA Ames Research Center Projection and coordinate system standards for mapping highly irregular bodies Real-time integrated multi-view visualization support for ground control, astronauts in the spacecraft and surface Real-time visualization and registration of new mapping products from various instruments Support for dynamic illumination condition simulations Comprehensive debris field simulation in low gravity conditions Line-of-sight communication planning and prediction tools for highly dynamic small body mission scenarios Visualization and Simulation Gaps