APS » PROLA » Phys. Rev. D » Volume 70 » Issue 8

Phys. Rev. D 70, 081101 (2004) [5 pages]

Postprocessed time-delay interferometry for LISA

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D. A. Shaddock *, B. Ware, R. E. Spero, and M. Vallisneri
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA

Rapid Communication Received 28 June 2004; published 27 October 2004

High-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.


©2004 The American Physical Society

URL: http://link.aps.org/abstract/PRD/v70/e081101
DOI: 10.1103/PhysRevD.70.081101
PACS: 04.80.Nn, 07.60.Ly, 95.55.Ym

* Electronic address: Daniel.Shaddock@jpl.nasa.gov

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