Blind source separation in 3rd generation gravitational-wave detectors

TL;DR

This paper reviews blind source separation techniques to address the challenge of detecting and estimating overlapping gravitational wave signals in future third-generation detectors, comparing their effectiveness and limitations.

Contribution

It provides a comprehensive methodological review of blind source separation methods and evaluates their applicability to gravitational wave signal separation.

Findings

Blind source separation methods can be adapted for gravitational wave signals

Each method has specific advantages and limitations in this context

The review guides future application of these techniques in gravitational wave astronomy

Abstract

Third generation and future upgrades of current gravitational-wave detectors will present exquisite sensitivities which will allow to detect a plethora of gravitational wave signals. Hence, a new problem to be solved arises: the detection and parameter estimation of overlapped signals. The problem of separating and identifying two signals that overlap in time, space or frequency is something well known in other fields (e.g. medicine and telecommunication). Blind source separation techniques are all those methods that aim at separating two or more unknown signals. This article provides a methodological review of the most common blind source separation techniques and it analyses whether they can be successfully applied to overlapped gravitational wave signals or not, while comparing the limits and advantages of each method.