LRIR: Luise-Reggiannini Estimator with Iterative Filtering

What does LRIR mean? The above is one of LRIR meanings. It may have other definitions. Please refer to the end of this passage.

LRIR: Luise-Reggiannini Estimator with Iterative Filtering

Definition in English: Luise-Reggiannini Estimator with Iterative Filtering