First stage of LISA data processing: Clock synchronization and arm-length determination via a hybrid-extended Kalman filter

Abstract

In this paper, we describe a hybrid-extended Kalman filter algorithm to synchronize the clocks and to precisely determine the inter-spacecraft distances for space-based gravitational wave detectors, such as (e)LISA. According to the simulation, the algorithm has significantly improved the ranging accuracy and synchronized the clocks, making the phase-meter raw measurements qualified for time- delay interferometry algorithms.

14 pages, Phys. Rev. D 90, 064016 (2014)

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• Clock synchronization and light-travel-time estimation for space-based gravitational-wave detectors
• Adaptive extended Kalman filter and point ahead angle prediction in the detection of gravitational waves in space
• Exploring Time Delay Interferometry Ranging as a Practical Ranging Approach in the Bayesian Framework