Please use this identifier to cite or link to this item: http://ktisis.cut.ac.cy/handle/10488/9648
Title: Spectral sensitivity of ALOS, ASTER, IKONOS, LANDSAT and SPOT satellite imagery intended for the detection of archaeological crop marks
Authors: Agapiou, Athos 
Alexakis, Dimitrios 
Hadjimitsis, Diofantos G. 
Keywords: Archaeological remains
Crop mark detection
RSR filters
Spectral sensitivity
Spectroscopy
Issue Date: 1-Jan-2014
Publisher: Taylor and Francis Ltd.
Source: International Journal of Digital Earth, 2014, Volume 7, Issue 5, Pages 351-372
Abstract: This study compares the spectral sensitivity of remotely sensed satellite images, used for the detection of archaeological remains. This comparison was based on the relative spectral response (RSR) Filters of each sensor. Spectral signatures profiles were obtained using the GER-1500 field spectroradiometer under clear sky conditions for eight different targets. These field spectral signature curves were simulated to ALOS, ASTER, IKONOS, Landsat 7-ETM+, Landsat 4-TM, Landsat 5-TM and SPOT 5. Red and near infrared (NIR) bandwidth reflectance were re-calculated to each one of these sensors using appropriate RSR Filters. Moreover, the normalised difference vegetation index (NDVI) and simple ratio (SR) vegetation profiles were analysed in order to evaluate their sensitivity to sensors spectral filters. The results have shown that IKONOS RSR filters can better distinguish buried archaeological remains as a result of difference in healthy and stress vegetation (approximately 1-8% difference in reflectance of the red and NIR band and nearly 0.07 to the NDVI profile). In comparison, all the other sensors showed similar results and sensitivities. This difference of IKONOS sensor might be a result of its spectral characteristics (bandwidths and RSR filters) since they are different from the rest of sensors compared in this study.
URI: http://ktisis.cut.ac.cy/handle/10488/9648
ISSN: 17538947
Rights: © 2012 Taylor & Francis.
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