Abstract
Comparative study on radiometric calibration methods among onboard, cross and vicarious calibration for visible to near infrared radiometers onboard satellites is conducted. The data sources of the aforementioned three calibration methods are different and independent. Therefore, it may say that the reliable Radiometric Calibration Accuracy: RCC would be the RCC which are resemble each other two of three RCCs. As experimental results, it is found that vicarious and cross calibration are reliable than onboard calibration. Also vicarious calibration based cross calibration method is proposed here. The proposed cross calibration method should be superior to the conventional cross calibration method based on band-to-band data comparison. Through experiments, it is also found that the proposed cross calibration is better than the conventional cross calibration. The radiometric calibration accuracy of the conventional cross calibration method can be evaluated by using the proposed cross calibration method.
Highlights
There are many previous research works on calibration of solar reflective wavelength coverage of mission instruments onboard remote sensing satellites [1]-[17]
The accuracy of the conventional cross calibration is evaluated with vicarious calibration data
The results show that cross calibration accuracy can be done much more precisely if the influences due to the aforementioned three major error www.ijarai.thesai.org (IJARAI) International Journal of Advanced Research in Artificial Intelligence, Vol 2, No.10, 2013 sources are taken into account
Summary
There are many previous research works on calibration of solar reflective wavelength coverage of mission instruments onboard remote sensing satellites [1]-[17]. Twenty sensors were considered in the simulation together with some ground types, various combinations of atmospheric states and illumination geometries They argued, 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. Li, Qiao, Liu, and Zhang (2004) developed a new method for cross calibration, and applied the method to sensors Multi-channel Visible Infrared Scanning radiometers (MVIRS) and Moderate Resolution Imaging Spectroradiometer (MODIS) [18] They argued, “'Error analysis indicates that the calibration is accurate to within 5%, which is comparable to, or better than, the vicarious calibration method". The results show that cross calibration accuracy can be done much more precisely if the influences due to the aforementioned three major error www.ijarai.thesai.org (IJARAI) International Journal of Advanced Research in Artificial Intelligence, Vol 2, No.10, 2013 sources are taken into account
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