Laser ranging and communications for LISA

Date

2010-09-27

Authors

Sutton, Andrew
McKenzie, Kirk
Ware, Brent
Shaddock, Daniel A

Journal Title

Journal ISSN

Volume Title

Publisher

Optical Society of America

Abstract

The Laser Interferometer Space Antenna (LISA) will use Time Delay Interferometry (TDI) to suppress the otherwise dominant laser frequency noise. The technique uses sub-sample interpolation of the recorded optical phase measurements to form a family of interferometric combinations immune to frequency noise. This paper reports on the development of a Pseudo-Random Noise laser ranging system used to measure the sub-sample interpolation time shifts required for TDI operation. The system also includes an optical communication capability that meets the 20 kbps LISA requirement. An experimental demonstration of an integrated LISA phase measurement and ranging system achieved a ≈ 0.19 m rms absolute range error with a 0.5Hz signal bandwidth, surpassing the 1 m rms LISA specification. The range measurement is limited by mutual interference between the ranging signals exchanged between spacecraft and the interaction of the ranging code with the phase measurement.

Description

Keywords

Interferometry, Laser range finder, Astronomy and astrophysics

Citation

Source

Optics express

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1364/OE.18.020759

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