“信噪比”的版本间差异
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（以“The signal-to-noise ratio of an observation is: s/n = Ct/[sqrt(sigma^2*n+t*(C-A*S))] where C is the count rate from the object (photons per second), t the exposure ...”为内容创建页面） |
（没有差异）
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2013年12月18日 (三) 11:35的版本
The signal-to-noise ratio of an observation is:
s/n = Ct/[sqrt(sigma^2*n+t*(C-A*S))]
where C is the count rate from the object (photons per second), t the exposure time, sigma the read-out noise of each pixel, n the number of pixels on which the image falls, S the number of photons from the sky per unit solid angle, and A the solid angle subtended by the image.
Through-put Measurements and SNR[1]