To See the Unseen:A History of Planetary Radar Astronomy: cover.jpg

To See the Unseen:A History of Planetary Radar Astronomy
by Andrew J. Butrica  
The NASA History Series  
NASA History Office
Washington, D.C.
1996
content:
Introduction.
Chapter One: A Meteoric Start.
Chapter Two: Fickle Venus.
Chapter Three: Sturm und Drang.
Chapter Four: Little Science/Big Science.
Chapter Five: Normal Science.
Chapter Six: Pioneering on Venus and Mars.
Chapter Seven: Magellan.
Chapter Eight: The Outer Limits.
Chapter Nine: One Step Beyond.
Conclusion: W(h)ither Planetary Radar Astronomy?.
Planetary Radar Astronomy Publications.
A Note on Sources.
Interviews .
Technical Essay: Planetary Radar Astronomy.
Abbreviations.
Index.

:31bb好书啊，谢谢，很久不见了

呵呵。文件大，不太好上传。
由于在外面实习，论坛我不像在学校时那样常来了。
：8de

论坛可以传每个附件20M的量了，呵呵
还支持批量上传了

本帖最后由 qche111 于 2009-7-23 22:45 编辑

格式：PDF扫描版，32MB
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网页版目录：
http://history.nasa.gov/SP-4218/contents.htm
喜欢上网的朋友也可以在网上浏览该书的完整版。

还是得压两个压缩包才可以啊

这上上限方便了不少分享电子书和其他资料的朋友。
看好这点。:16bb

不错的东西啊

我也欣赏这一点，方便多了
我要是网速快，一定经常发资料了，呵呵

似乎好久不见。
:qqx

Planetary radar astronomy介绍
来源于Ostro, S. J. (1993). Reviews of Modern Physics 65, 1235-1279.
Radar is a powerful technique that has furnished otherwise unavailable information about solar system bodies for three decades. The advantages of radar in planetary astronomy result from
(1) the observer's control of all the attributes of the coherent signal used to illuminate the target, especially the waveform's time/frequency modulation and polarization;
(2) the ability of radar to resolve objects spatially via measurements of the distribution of echo power in time delay and Doppler frequency;
(3) the pronounced degree to which delay-Doppler measurements constrain orbits and spin vectors; and
(4)Êcentimeter-to-meter wavelengths, which easily penetrate optically opaque planetary clouds and cometary comas, permit investigation of nearsurface macrostructure and bulk density, and are sensitive to high concentrations of metal or, in certain situations, ice. Planetary radar astronomy has primarily involved observations with Earth-based radar telescopes, but also includes some experiments with a spaceborne transmitter or receiver. In addition to providing a wealth of information about the geological and dynamical properties of asteroids, comets, the inner planets, and natural satellites, radar experiments have established the scale of the solar system, have contributed significantly to the accuracy of planetary ephemerides, and have helped to constrain theories of gravitation. This review outlines radar astronomical techniques and describes principal observational results.

thank you for your book!!!!!!!!!!!!!!!!!!!!

感谢楼主分享

谢谢分享，学习了

不错，谢谢分享

占个位，后两个下不动，以后再下

:22bbgood:27bb

先回复一次，等看完了再谈感受

谢谢分享

谢谢你的 分享  非常好

下来看看  谢谢分享

good,thank you!!!!!!!!!!!!!!!!!!!!!!

谢谢楼主，十分感谢！