Sensitivity of a space infrared interferometer

被引：0

作者：

Nakajima, T

Matsuhara, H

机构：

来源：

DARWIN AND ASTRONOMY, PROCEEDINGS: THE INFRARED SPACE INTERFEROMETER | 2000年 / 451卷

关键词：

instrumentation : interferometers; space vehicles;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have obtained the expressions for signal-to-noise ratios (SNRs) of C-n(2) and C-n(n) space interferometers in the presence of source shot noise, thermal background shot noise, and detector read noise. We investigate the tradeoff between the C-n(2) and C-n(n) interferometers with varying B/d where B is the length of the longest baseline and d is the aperture diameter. We have calculated the SNRs of a five element interferometer with 1.5 m diameter apertures for natural thermal background. We have found that for B <50 m, the C-n(n) interferometer is more sensitive, while for B > 200 m, the C-n(2) interferometer is preferred.

引用

页码：199 / 204

页数：4

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