| Autor: |
Peter Mule, Henry P. Sampler, Michael D. Hill |
| Rok vydání: |
2000 |
| Předmět: |
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| Zdroj: |
Infrared Spaceborne Remote Sensing VIII. |
| ISSN: |
0277-786X |
| Popis: |
The Microwave Anisotropy Probe (MAP) Observatory, scheduled for a 2001 launch, is designed to measure temperature fluctuations (anisotropy) and produce a high sensitivity and high spatial resolution (better than 0.3° at 90 GHz.) map of the Cosmic Microwave Background (CMB) radiation over the entire sky between 22 and 90GHz. MAP utilizes back-to-back composite Gregorian telescopes supported on a composite truss structure to focus the microwave signals into 10 differential microwave receivers. Proper position and shape of the telescopereflectors at the operating temperature of'90 K is a critical element to ensure mission success. We describe the methods and analysis used to validate the in-flight position and shape predictions for thereflectors based on photogrammetric metrology data taken under vacuum with the reflectors at '-'90K. Contour maps showing reflector distortions were generated. The resulting reflector distortion data are shown to be crucialto the analytical assessment ofthe MAP instrument's microwave system in-flight performance. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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