基于改进型光谱指数的荒漠土壤水分遥感反演

高琪, 王玉珍, 冯春晖, 马自强, 柳维扬, 彭杰, 季彦桢

Remote sensing inversion of desert soil moisture based on improved spectral indices

GAO Qi, WANG Yuzhen, FENG Chunhui, MA Ziqiang, LIU Weiyang, PENG Jie, JI Yanzhen

表4 传统光谱指数间方差膨胀因子

Tab.4 Expansion factors for variance between conventional-type spectral indices

因子 BSI Cal CI NDVI PDI DVI GVMI RVI NDWI BSI — Cal 1.71 — CI 2.40 1.17 — NDVI 1.67 1.01 3.54 — PDI 1.00 1.04 1.25 1.12 — DVI 1.59 1.01 2.28 16.10 1.02 — GVMI 2.02 1.00 1.93 2.12 1.09 1.82 — RVI 2.59 1.20 4.86 10.51 1.05 11.48 1.74 — NDWI 1.07 1.19 1.54 4.09 1.20 3.32 1.94 1.84 —