Differential Microwave Radiometers
E1036259
Differential Microwave Radiometers are highly sensitive instruments designed to measure tiny temperature fluctuations in the cosmic microwave background radiation across the sky.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
microwave radiometer
ⓘ
radiometer ⓘ scientific instrument ⓘ |
| canBe |
balloon-borne
ⓘ
ground-based ⓘ space-based ⓘ |
| compares |
microwave signals from two directions on the sky
ⓘ
sky signal with internal reference load ⓘ |
| dataUsedFor |
characterizing CMB power spectrum
ⓘ
studying early universe conditions ⓘ testing cosmological models ⓘ |
| designedFor |
high sensitivity to small temperature differences
ⓘ
mapping the cosmic microwave background across the sky ⓘ |
| enables |
constraints on cosmological parameters
ⓘ
mapping of large-scale structure in the early universe ⓘ measurement of CMB temperature anisotropies ⓘ |
| hasComponent |
backend electronics
ⓘ
detectors ⓘ microwave amplifiers ⓘ microwave antenna ⓘ microwave feed horns ⓘ reference load ⓘ switching system ⓘ |
| hasProperty |
high stability
ⓘ
low noise ⓘ wide dynamic range ⓘ |
| improves | sensitivity to small temperature variations ⓘ |
| measures |
cosmic microwave background radiation
ⓘ
microwave brightness temperature differences ⓘ temperature fluctuations in the cosmic microwave background ⓘ |
| minimizes |
1/f noise
ⓘ
effects of gain fluctuations ⓘ |
| operatesBy | measuring difference between two input signals ⓘ |
| operatesIn | microwave frequency range ⓘ |
| reduces |
common-mode noise
ⓘ
instrumental systematics ⓘ |
| requires |
careful control of systematic errors
ⓘ
precise calibration ⓘ thermal stability ⓘ |
| usedIn |
astrophysics
ⓘ
balloon-borne experiments ⓘ cosmology ⓘ ground-based CMB experiments ⓘ space missions ⓘ |
| uses | differential measurement technique ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.