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. Author manuscript; available in PMC: 2011 May 25.
Published in final edited form as: Proc SPIE Int Soc Opt Eng. 2007 Jan 1;6515(65150 Suppl):1–7. doi: 10.1117/12.707800

Figure 1.

Figure 1

Plots illustrating the difficulties of estimating Hotelling SNR in the low-noise regime. For both (a) and (b), the solid line is the true Hotelling SNR; the dashed lines are estimates of SNR produced using 4, 32, 70, and 200 samples. As the number of samples increases, the estimate of SNR approaches the true value of the SNR. Plot (b) is a zoomed-in version of plot (a) showing the region around ε = 1.