Bistatic coherent laser radar signal–to–noise ratio

Eric P. Magee, Timothy Joseph Kane

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We investigate the signal-to-noise ratio(SNR) for a bistatic coherent laser radar (CLR) system. With a bistatic configuration, the spatial resolution is determined by the overlap of the transmit beam and the virtual backpropagated local oscillator beam. This eliminates the trade-off between range resolution and the bandwidth of the transmitted pulse inherent in monostatic systems. The presented analysis is completely general in that the expressions can be applied to both monostatic and bistatic CLR systems. The heterodyne SNR is computed under the assumption of untruncated Gaussian optics and untruncated Gaussian beam profiles. The analysis also includes the effects of refractive turbulence. The results show that, for maximum SNR, small transmit and local oscillator beam profiles (e-1intensity radius) are desired.

Original languageEnglish (US)
Pages (from-to)1768-1779
Number of pages12
JournalApplied Optics
Volume41
Issue number9
DOIs
StatePublished - Mar 20 2002

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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