I am using images from two different sensors, Landsat 8 OLI (January 2017) and ETM+ (January 2007) to compute various vegetation indices.
These indices involve RED and NIR band to scale vegetation density and intensity. I have noticed the difference in wavelengths of both sensors’ required bands as follows;
Landsat 7 ETM+
Band 3 – Red : 0.63-0.69
Band 4 – Near Infrared (NIR) : 0.77-0.90
Landsat 8 OLI
Band 4 – Red : 0.64-0.67
Band 5 – Near Infrared (NIR) : 0.85-0.88
Keeping in view this wavelength difference of both sensors' RED & NIR Bands, I am interested to know whether this difference will affect my intended results?