Treating observational systematics for LSS in photometric surveys

Given the huge amount of data that stage IV cosmology surveys, such as LSST-DESC and Euclid will provide, statistical errors will shrink even lower than in previous stage surveys, such as DES, so systematic errors will become the main sources of uncertainty. Therefore it will be essential to know in detail the different sources of systematic effects and to correct for them appropriately in order to avoid significant biases on the results from different probes. In this sense, galaxy clustering measurements are not an exception to this problem, with observational systematics being of particular relevance. In this contribution we present how we can apply different methodologies to the treat the observational systematics in the galaxy clustering measurements from coming and current surveys.