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Investigation and Mitigation of the Crosstalk Effect in Terra MODIS Band 30

机译：调查和缓解Terra MODIS Band 30中的串扰效应

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It has been previously reported that thermal emissive bands (TEB) 27–29 in the Terra (T-) MODerate resolution Imaging Spectroradiometer (MODIS) have been significantly affected by electronic crosstalk. Successful linear theory of the electronic crosstalk effect was formulated, and it successfully characterized the effect via the use of lunar observations as viable inputs. In this paper, we report the successful characterization and mitigation of the electronic crosstalk for T-MODIS band 30 using the same characterization methodology. Though the phenomena of the electronic crosstalk have been well documented in previous works, the novel for band 30 is the need to also apply electronic crosstalk correction to the non-linear term in the calibration coefficient. The lack of this necessity in early works thus demonstrates the distinct difference of band 30, and, yet, in the same instances, the overall correctness of the characterization formulation. For proper result, the crosstalk correction is applied to the band 30 calibration coefficients including the non-linear term, and also to the earth view radiance. We demonstrate that the crosstalk correction achieves a long-term radiometric correction of approximately 1.5 K for desert targets and 1.0 K for ocean scenes. Significant striping removal in the Baja Peninsula earth view imagery is also demonstrated due to the successful amelioration of detector differences caused by the crosstalk effect. Similarly significant improvement in detector difference is shown for the selected ocean and desert targets over the entire mission history. In particular, band 30 detector 8, which has been flagged as “out of family” is restored by the removal of the crosstalk contamination. With the correction achieved, the science applications based on band 30 can be significantly improved. The linear formulation, the characterization methodology, and the crosstalk effect correction coefficients derived using lunar observations are once again demonstrated to work remarkably well.
机译：以前有报道说，Terra（T-）中等分辨率成像光谱仪（MODIS）中的热发射带（TEB）27-29已受到电子串扰的显着影响。建立了成功的电子串扰效应线性理论，并通过使用月球观测作为可行的输入成功地表征了这种效应。在本文中，我们报告了使用相同的表征方法对T-MODIS频段30的电子串扰进行了成功的表征和缓解。尽管在以前的工作中已经很好地证明了电子串扰的现象，但是对于频带30的小说仍然需要对校准系数中的非线性项应用电子串扰校正。因此，在早期工作中缺乏这种必要性证明了谱带30的明显差异，然而，在相同的情况下，表明了表征配方的总体正确性。为了获得正确的结果，串扰校正将应用于频带30的校准系数（包括非线性项），并且还会应用于地面辐射。我们证明，串扰校正可实现沙漠目标约1.5 K的长期辐射校正，海洋场景约1.0 K的长期辐射校正。由于成功改善了由串扰效应引起的检测器差异，在巴哈半岛地球视图影像中也显示出明显的条纹去除效果。同样，在整个任务历史中，所选海洋和沙漠目标的探测器差异也得到了显着改善。特别地，通过去除串扰污染来恢复被标记为“家庭外”的带30检测器8。通过进行校正，可以显着改善基于波段30的科学应用。使用月球观测得到的线性公式，表征方法和串扰效果校正系数再次证明非常有效。

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