Engineering topics
Publications and source records attributed to Daehler, Erik.
Topics covered include: Spatial Response; Reflectance Radiometry; Positional Accuracy; Stationary Atmospheric Monitoring; Laboratory Calibration; Thermal Radiometry; Hyperspectral Radiometry; and Portable Atmospheric Monitoring.
NASA acquired imagery from the IKONOS satellite as part of its Scientific Data Purchase (SDP) program, which purchases scientific data sets from commercial sources. This viewgraph presentation describes the IKONOS satellite and its sensors, and then gives an overview of characterization efforts undertaken by NASA in cooperation with other government agencies. The characterization included relative radiometric correction, absolute radiometric characterization of data from Lunar Lake Playa, Nevada, and calibration of data from Stennis Space Center, Mississippi.
The objective of this program: Perform radiometric vicarious calibrations of IKQNOS imagery and compare with Space Imaging calibration coefficients The approach taken: utilize multiple well-characterized sites which are widely used by the NASA science community for radiometric characterization of airborne and spaceborne sensors; and to Perform independent characterizations with independent teams. Each team has slightly different measurement techniques and data processing methods.
Verification and validation capabilities are discussed for: spatial response,reflectance radiometry, positional accuracy,in-flight instruments, lab calibration, thermal radiometry,hyperspectral radiometry, and portable atmospheric monitoring.