GEOSCAN Search Results: Fastlink


TitleImpact of sensor signal-to-noise ratio and spectral characteristics on hyperspectral geoscience products
AuthorSun, L; Staenz, K; Neville, R A; White, H PORCID logo
SourceIEEE International Geoscience and Remote Sensing Symposium proceedings 4241681, 2006 p. 2064-2067,
Alt SeriesNatural Resources Canada, Contribution Series 20181357
Mediapaper; on-line; digital
File formatpdf
Subjectsgeophysics; remote sensing
ProgramCanada Centre for Remote Sensing Divsion
AbstractTrade-off studies are essential in designing and developing any remote sensing instrument. In order to make effective decisions, the sensitivity analysis of task-specific information to be extracted from the remotely sensed data to the sensor's characteristic parameters must be conducted based on various simulated data. The impact of the changes of signal-tonoise ratio (SNR), spectral sampling interval (SSI), wavelength center position (WCP), and wavelength center error (WCE), on the identification and unmixing fraction maps of fifteen selected pure minerals is investigated in this paper. The results show that, for a sensor with a typical responsivity spectral dependence, a specification of SNR = 200 at 2100 nm is insufficient for identifying and mapping the selected minerals with linear spectral unmixing using the SWIR II region (1950 to 2450 nm). On the other hand, if the SNR is high enough, a SSI of 8.2 nm is sufficient for producing these geoscience products no matter where the WCPs of a sensor's bands are located. It was found that some minerals, such as Dickite, become unidentifiable when the SSI is increased to > 12.3 nm. A WCE has impacts on both the identification and unmixing fractions of some minerals, but these are small relative to the impacts of SNR.

Date modified: