|
Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://www.naic.edu/~isradar/is/intro/intro.html
Дата изменения: Thu Feb 27 17:11:15 2003 Дата индексирования: Sat Dec 22 04:52:08 2007 Кодировка: Поисковые слова: п п п р п р п р п р п р р п п р п п р п п р п п р п |
Instructions for setting up and running a dual beam
experiment
The Arecibo 430
MHz radar uses incoherent scatter to determine the characteristics of the
ionosphere. It is part of a chain of incoherent scatter radars operated by the Upper Atmospheric
Facilities program of the National Science Foundation with strong links to the CEDAR program and the National Space Weather
program. The radar chain frequently operates in a campaign mode involving the EISCAT radars in addition to
the US radars as well as many other facilities and instruments; see our Arecibo World Day Home
Page.
The Arecibo radar
is extremely powerful and sensitive; it is capable of making very accurate measurements
of many ionospheric parameters. For example, see our helium
layer measurements and our simultaneous measurements
of two different ion temperatures.
Staff members at
the Arecibo observatory conduct various ionospheric studies using the other
radars in the chain as well as Arecibo; for example, the
effect of electron Coulomb collisions on the incoherent scatter spectrum at
Jicamarca.
We describe the the analysis of our World Day data. in this linked
document.
For several years
we have been working on a better method of converting the line of sight
velocities from the world Day data into vector velocities. The method we have
adopted is Linear Regularization; it is described in Chapter 18 of Numerical
Recipes. Here is a draft of a
write-up of our application of the linear regularization
technique .