My study will involve Landsat OLI, ETM+ and TM scenes for forest biomass change assessment (Time Series Analysis) using different vegetation indices and textures. According to the official site https://landsat.usgs.gov/landsat-collections " Landsat scenes with the highest available data quality are placed into Tier 1 and are considered suitable for time-series analysis. Tier 1 includes Level-1 Precision and Terrain (L1TP) corrected data that have well-characterized radiometry and are inter-calibrated across the different Landsat instruments".
Keeping the above in view I take that I can use them straightforwardly assuming that all three OLI, ETM+ and TM stand at the same line and can be used interchangeably since to me it does not make any sense to do any further calibration when these Surface Reflectance Products have already been pre-processed and made ready for respective use and carry well characterized radiometry across the different Landsat instruments. Kindly make me clear please if I stand correct or still I would need any further correction or adjustment of my data.