Simulations of partially coherent focal plane imaging arrays: Fisher matrix approach to performance evaluation

Details Simulations of partially coherent focal plane imaging arrays: Fisher matrix approach to performance evaluation Simulations of partially coherent focal plane imaging arrays: Fisher matrix approach to performance evaluation

2007-03-07

arxiv.org/abs/astro-ph/0703141v1

Astronomy and Astrophysics

Astrophysics

14 pages, 7 figures, submitted to MNRAS 7th March 2007

Scientific paper

10.1111/j.1365-2966.2007.12425.x

Focal plane arrays of bolometers are increasingly employed in astronomy at far--infrared to millimetre wavelengths. The focal plane fields and the detectors are both partially coherent in these systems, but no account has previously been taken of the effect of partial coherence on array performance. In this paper, we use our recently developed coupled--mode theory of detection together with Fisher information matrix techniques from signal processing to characterize the behaviour of partially coherent imaging arrays. We investigate the effects of the size and coherence length of both the source and the detectors, and the packing density of the array, on the amount of information that can be extracted from observations with such arrays.

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