A method and system for removing ground clutter data from time series data are provided. The method comprises receiving first time series data, dividing the first time series data into a plurality of subsets of first time series data, applying a first regression filter to each respective subset first time series data of the plurality of subsets of first time series data to generate a plurality of regression filtered subsets of first time series data, and concatenating the plurality of regression filtered subsets of first time series data to generate a regression filtered first time series data.