Short-span TDI configurations with minimal null frequencies, especially PD4L, improve frequency-domain gravitational-wave parameter estimation at high frequencies, while time-domain analysis makes all configurations equivalent.
Post-processed time-delay interferometry for LISA
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abstract
High-precision interpolation of LISA phase measurements allows signal reconstruction and formulation of Time-Delay Interferometry (TDI) combinations to be conducted in post-processing. The reconstruction is based on phase measurements made at approximately 10 Hz, at regular intervals independent of the TDI delay times. Interpolation introduces an error less than 1e-8 with continuous data segments as short as two seconds in duration. Potential simplifications in the design and operation of LISA are presented.
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Correlation and Data-Analysis Distinctiveness of Time-Delay Interferometry Configurations
Short-span TDI configurations with minimal null frequencies, especially PD4L, improve frequency-domain gravitational-wave parameter estimation at high frequencies, while time-domain analysis makes all configurations equivalent.