| Title | Impacts of spectral band difference effects on radiometric cross-calibration between satellite sensors in the solar-reflective spectral domain |
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| Author | Teillet, P M; Fedosejevs, G; Thome, K J; Barker, J L |
| Source | Remote Sensing of Environment vol. 110, no. 3, 2007 p. 393-409, https://doi.org/10.1016/j.rse.2007.03.003 |
| Year | 2007 |
| Alt Series | Natural Resources Canada, Contribution Series 20181636 |
| Publisher | Elsevier BV |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | geophysics; remote sensing |
| Program | Canada Centre for Remote Sensing Divsion |
| Released | 2007 10 01 |
| Abstract | In order for quantitative applications to make full use of the ever-increasing number of Earth observation satellite systems, data from the various imaging sensors involved must be on a consistent
radiometric scale. This paper reports on an investigation of radiometric calibration errors due to differences in spectral response functions between satellite sensors when attempting cross-calibration based on near-simultaneous imaging of common
ground targets in analogous spectral bands, a commonly used post-launch calibration methodology. Twenty Earth observation imaging sensors (including coarser and higher spatial resolution sensors) were considered, using the Landsat solar reflective
spectral domain as a framework. Scene content was simulated using spectra for four ground target types (Railroad Valley Playa, snow, sand and rangeland), together with various combinations of atmospheric states and illumination geometries. Results
were obtained as a function of ground target type, satellite sensor comparison, spectral region, and scene content. Overall, if spectral band difference effects (SBDEs) are not taken into account, the Railroad Valley Playa site is a "good" ground
target for cross calibration between most but not all satellite sensors in most but not all spectral regions investigated. "Good" is defined as SBDEs within ± 3%. The other three ground target types considered (snow, sand and rangeland) proved to be
more sensitive to uncorrected SBDEs than the RVPN site overall. The spectral characteristics of the scene content (solar irradiance, surface reflectance and atmosphere) are examined in detail to clarify why spectral difference effects arise and why
they can be significant when comparing different imaging sensor systems. Atmospheric gas absorption features are identified as being the main source of spectral variability in most spectral regions. The paper concludes with recommendations on
spectral data and tools that would facilitate cross-calibration between multiple satellite sensors. |
| GEOSCAN ID | 311991 |
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