“信噪比”的版本间差异
跳到导航
跳到搜索
（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） |
无编辑摘要 |
||
| （未显示同一用户的2个中间版本） | |||
| 第1行： | 第1行： | ||
*参见[http://www.ucolick.org/~bolte/AY257/s_n.pdf] |
|||
The signal-to-noise ratio of an observation is: |
*The signal-to-noise ratio of an observation is: |
||
s/n = Ct/[sqrt(sigma^2*n+t*(C-A*S))] |
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. |
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[http://www.noao.edu/kpno/manuals/l2mspect/node12.html] |
*Through-put Measurements and SNR[http://www.noao.edu/kpno/manuals/l2mspect/node12.html] |
||
*[http://www.stsci.edu/instruments/wfpc2/Wfpc2_hand/HTML/W2_61.html] |
|||
2016年2月18日 (四) 08:21的最新版本
- 参见[1]
- 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[2]