These observation types provide complementary information for representing lunar terrain. Orbital imagery and stereo photography contribute visual and three-dimensional surface information, while laser altimetry supplies elevation measurements and radar observations add coverage to the mapping process. Combining them supports digital elevation models that describe craters, ridges, slopes, and permanently shadowed regions more effectively than relying on one data source.
Permanently shadowed regions represent terrain that must be included in a complete lunar surface model, even though their illumination conditions differ from other areas. Mapping these regions helps engineers evaluate terrain continuity, slopes, and potential hazards when planning surface operations. Their inclusion also supports geological interpretation and resource assessment in locations relevant to future exploration.
Digital elevation models organize measured surface elevations into a representation that engineers can analyze spatially. From this model, teams can examine terrain shape, identify steep slopes, locate craters and ridges, and recognize areas where loose regolith or uneven ground may create hazards. The resulting information supports decisions about landing sites, mobility, and surface system design.
A typical workflow begins by collecting orbital imagery, stereo photography, laser altimetry, and radar observations. These measurements are combined to generate a digital elevation model, which represents surface elevation and terrain shape. Engineers and scientists then interpret features such as slopes, craters, ridges, and shadowed regions for planning, hazard evaluation, geological study, and resource assessment.
Landing-site analysis uses mapped elevations and terrain features to identify conditions that may affect a safe descent and surface access. Engineers can assess slopes, craters, ridges, and areas associated with loose regolith or other terrain hazards. Comparing these characteristics helps guide site selection and supports the design of landing systems and mission operations suited to the local surface.
Rover planners use elevation and terrain information to identify routes that avoid steep terrain, craters, ridges, and other hazards. Engineers also apply the same maps when evaluating locations for surface operations and future lunar infrastructure. By linking terrain shape with geological interpretation and resource assessment, mapping supports both immediate exploration systems and longer-term development planning.