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菜鸟求助,关于材料
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菜鸟求助,关于材料
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1cainiao1
不靠谱的孩子干不靠谱的毕设
UID :86381
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2011-12-02
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2011-12-14
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发表于: 2011-12-09 22:55:01
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资料
CST
全新小鸟一只,我需要冰和固态沥青这两种材料,但是material那里要填好多种数据的说,google了半天都没有一个地方能找到permittivity, permeability & conductivity的,各位高手一般这种资料应该 ..
h3GUFiZ.
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hefang
本账号已冷冻,请勿发站内信或回帖,概不回复!
UID :24731
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2009-01-19
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发表于: 2011-12-09 23:13:02
回 楼主(1cainiao1) 的帖子
Permittivity很好找:
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Ice and Water Permittivities for Millimiter and Sub-millimiter Remote Sensing Applications.pdf
(607 K) 下载次数:5
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IEEE的Journal:
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Herique, A.; Kofman, W.; , "Determination of the ice dielectric permittivity using the data of the test in Antarctica of the ground-penetrating radar for Mars'98 mission," Geoscience and Remote Sensing, IEEE Transactions on , vol.35, no.5, pp.1338-1349, Sep 1997
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doi: 10.1109/36.628799
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Abstract: A ground-penetrating radar will be integrated inside the guiderope ballast of the Mars'98 balloon mission. A prototype of this impulse system working in the 5-15 MHz band was tested close to Dumont d'Urville, the French Antarctic Station, in February 1993. The authors obtained a large set of profiles in cold ice with a glacier thickness from 200 to about 900 m. For each depth, the measured echoes are very clear with a good signal-to-noise ratio (SNR). In this paper, the authors firstly describe the performances of the radar and they study the electromagnetic propagation in the Antarctica glacier. This knowledge allows them to use the frequency wavenumber migration to focus the signal, to increase the SNR and to rebuild an image of the subsurface. The migration process gives a good estimation of the real part of the permittivity (i.e., the velocity). The fact that the signal comes from different depths is used to measure the imaginary part of the permittivity which defines the ice attenuation. The spectral analysis gives its frequency dependence
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URL:
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=628799&isnumber=13674
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http://www.asiinstr.com/technical/Dielectric%20Constants.htm
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研究permeability和损耗的不多,所以不太容易直接找到,楼主可能需要把关键字写得详细一些。
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有精力和条件的话,自己测吧。
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版主周末都不回答问题?
版主要回答问题,你做到了吗?
hefang你是CST公司的吧,说点儿有用的!
你是做天线的吗?不懂不要说外行的话!
你要是不懂就shut up!
相信我,没有你论坛会更好。
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1cainiao1
不靠谱的孩子干不靠谱的毕设
UID :86381
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2011-12-02
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2011-12-14
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2楼
发表于: 2011-12-12 17:00:24
谢谢楼上,我真的是找了一大圈也没有找到啊,唉。
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