Shaddock, DanielWare, BSpero, RobertVallisneri, M2015-12-101550-7998http://hdl.handle.net/1885/54522High-precision interpolation of LISA phase measurements allows signal reconstruction and formulation of time-delay interferometry (TDI) combinations to be conducted in postprocessing. The reconstruction is based on phase measurements made at approximately 10 Hz (for a 1 Hz signal bandwidth) at regular intervals independent of the TDI delay times. Interpolation introduces an error less than 1 × 10-8 with continuous data segments as short as 2 s in duration. The 10 Hz sampling rate represents an increase from the 2 Hz sampling rate needed for the original implementation of TDI. The advantages of this technique include increased flexibility of the data analysis and significantly simplified hardware.Keywords: accuracy; analytical error; antenna; article; data analysis; gravity; interferometry; laser; signal processing; space flight; telemetry; time200410.1103/PhysRevD.70.0811012015-12-09