| タイトル | Applications of Microwave Photonics in Radio Astronomy and Space Communication |
| 著者（英） | Shillue, William P.; D'Addario, Larry R. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 2006-06-17 |
| 言語 | eng |
| 内容記述 | An overview of narrow band vs wide band signals is given. Topics discussed included signal transmission, reference distribution and photonic antenna metrology. Examples of VLA, ALMA, ATA and DSN arrays are given. . Arrays of small antennas have become more cost-effective than large antennas for achieving large total aperture or gain, both for astronomy and for communication. It is concluded that emerging applications involving arrays of many antennas require low-cost optical communication of both wide bandwidth and narrow bandwidth; development of round-trip correction schemes enables timing precision; and free-space laser beams with microwave modulation allow structural metrology with approx 100 micrometer precision over distances of 200 meters. |
| NASA分類 | Communications and Radar |
| 権利 | Copyright |
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