Dicke radiometer
E703696
The Dicke radiometer is a sensitive microwave radiometer design that uses rapid switching to reduce noise, enabling precise measurements of weak cosmic and thermal radiation signals.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
microwave radiometer
ⓘ
radiometer design ⓘ |
| appliedIn |
atmospheric remote sensing
ⓘ
cosmic microwave background experiments ⓘ radio astronomy observations ⓘ |
| basedOnPrinciple |
differential measurement
ⓘ
switching modulation ⓘ |
| developedBy | Robert H. Dicke NERFINISHED ⓘ |
| developedIn | 1940s ⓘ |
| field |
microwave engineering
ⓘ
radio astronomy ⓘ remote sensing ⓘ |
| hasAdvantageOver | total power radiometer ⓘ |
| hasComponent |
antenna
ⓘ
detector ⓘ integrator ⓘ low-noise amplifier ⓘ microwave switch ⓘ reference termination ⓘ |
| hasKeyFeature |
improved sensitivity
ⓘ
measurement of small temperature differences ⓘ noise reduction by switching between antenna and reference load ⓘ stabilized receiver gain ⓘ |
| hasMethod | comparison of sky signal with reference load ⓘ |
| hasPurpose |
measurement of cosmic microwave radiation
ⓘ
measurement of thermal radiation ⓘ measurement of weak microwave signals ⓘ reduction of gain fluctuations ⓘ reduction of receiver noise ⓘ |
| measurementOutput | antenna temperature ⓘ |
| mitigates |
1/f noise
ⓘ
gain drift ⓘ |
| namedAfter | Robert H. Dicke NERFINISHED ⓘ |
| operatesIn |
microwave band
ⓘ
radio frequency spectrum ⓘ |
| relatedTo |
correlation radiometer
ⓘ
noise figure measurement techniques ⓘ total power radiometer ⓘ |
| typicalSwitchingFrequency | kilohertz range ⓘ |
| usedForDiscoveryOf | cosmic microwave background radiation ⓘ |
| uses |
Dicke switching
NERFINISHED
ⓘ
microwave receiver ⓘ rapid switching ⓘ reference load ⓘ square-law detector ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.