Ranging and phase measurement for LISA

Details Ranging and phase measurement for LISA Ranging and phase measurement for LISA

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jphcs.228a2045j&link_type=abstract

Journal of Physics: Conference Series, Volume 228, Issue 1, pp. 012045 (2010).

Physics

2

Scientific paper

The LISA phase measurement system (PMS) will provide interferometric phase readout of the primary heterodyne signal at microcycle sensitivity, ranging measurements at sub-meter accuracy and data communication at rates of several kilobits per seconds. Our investigations are focused on inter-spacecraft laser ranging and data transfer for LISA using Direct Sequence Spread Spectrum (DS/SS) modulation onto the laser links. We present the setup of an optical experimental to test the levels of performance achievable with a single laser link as well as a new hardware prototype based on FPGA (Field Programmable Gate Array) processing to perform high-accuracy phase readout of the optical signal, ranging measurements, data communication and is suitable for clock noise demodulation and digital laser-phase locking.

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