Fusion of China ZY-1 02D Hyperspectral Data and Multispectral Data: Which Methods Should Be Used?

ZY-1 02D is China’s first civil hyperspectral (HS) operational satellite, developed independently and successfully launched in 2019. It can collect HS data with a spatial resolution of 30 m, 166 spectral bands, range 400~2500 nm, swath width 60 km. Its competitive advantages over other on-orbit or planned satellites are its high large width. Unfortunately, the relatively low may limit applications. As result, fusing high-spatial-resolution multispectral (MS) required to improve while maintaining fidelity. This paper conducted comprehensive evaluation study on fusion MS (10-m resolution), based visual interpretation quantitative metrics. Datasets from Hebei, China, were used this experiment, performances six common methods, namely Gram-Schmidt (GS), High Pass Filter (HPF), Nearest-Neighbor Diffusion (NND), Modified Intensity-Hue-Saturation (IHS), Wavelet Transform (Wavelet), Color Normalized Sharping (Brovey), compared. The experimental results show that: (1) HPF GS methods better suited for Data Data, (2) IHS Brovey well but introduce distortion, (3) NND have fidelity poor detail representation. findings could serve as good reference practical application fusion.