Numerical simulation of time delay interferometry for new LISA, TAIJI and other LISA-like missions

Understand

The success of LISA Pathfinder in demonstrating the LISA drag-free requirement paved the road of using space missions for detecting low-frequency and middle-frequency GWs.

• The new LISA GW mission proposes to use arm length of 2.5 Gm (1 Gm = 106 km).
• The TAIJI GW mission proposes to use arm length of 3 Gm.
• In order to attain the requisite sensitivity, laser frequency noise must be suppressed to below the secondary noises such as the optical path noise, acceleration noise etc.