Radiometric comparison of JERS-1 OPS and LANDSAT-5 TM multispectral data

A direct comparison and cross-calibration of multispectral data from the JERS-1 OPS system and the Landsat-5 Thematic Mapper (TM) is performed. By comparative analysis of OPS and TM data collected on the same day over the same area, the approach minimizes assumptions about scene, measurement, and system conditions. Suitable cloud-free collections occurred on 27 Sep 1993. After spatial registration, matching OPS and TM spectral bands were paired for regression analysis. Regressions also were computed to predict each OPS band as a function of all TM bands and each TM band as a function of the OPS bands. Next, radiance calibration coefficients from the tape headers were applied to median signal values. Except for the longest SWIR bands, these OPS and TM spectral radiances agreed to within 5 to 14 percent.