<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=iso-8859-1"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Texto de balão Carácter";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";
mso-fareast-language:EN-US;}
span.EstiloCorreioElectrnico17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.TextodebaloCarcter
{mso-style-name:"Texto de balão Carácter";
mso-style-priority:99;
mso-style-link:"Texto de balão";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 3.0cm 70.85pt 3.0cm;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:803498886;
mso-list-template-ids:-2119265224;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:36.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:72.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:"Courier New";
mso-bidi-font-family:"Times New Roman";}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:108.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:144.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:180.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:216.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:252.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:288.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:324.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l1
{mso-list-id:1402017444;
mso-list-template-ids:2027073990;}
@list l1:level1
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:36.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l1:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:72.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:"Courier New";
mso-bidi-font-family:"Times New Roman";}
@list l1:level3
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:108.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l1:level4
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:144.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l1:level5
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:180.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l1:level6
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:216.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l1:level7
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:252.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l1:level8
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:288.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l1:level9
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:324.0pt;
mso-level-number-position:left;
text-indent:-18.0pt;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
ol
{margin-bottom:0cm;}
ul
{margin-bottom:0cm;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=PT link=blue vlink=purple><div class=WordSection1><div align=center><table class=MsoNormalTable border=0 cellspacing=3 cellpadding=0 width="84%" style='width:84.0%'><tr><td colspan=2 style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal align=center style='text-align:center'><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><img width=392 height=125 id="Imagem_x0020_1" src="cid:image002.png@01CC4D40.179E5580" alt="Descrição: Digisonde"></span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p></o:p></span></p></td></tr><tr><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal align=center style='text-align:center'><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><img width=694 height=361 id="Imagem_x0020_2" src="cid:image004.jpg@01CC4D40.179E5580" alt="Descrição: Digisonde Evolution"></span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p></o:p></span></p></td><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p> </o:p></span></p></td></tr><tr><td style='padding:.75pt .75pt .75pt .75pt'><ul type=disc><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1'><span lang=EN-US style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'>Digisonde is an ionospheric radar, </span><span style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'><a href="http://en.wikipedia.org/wiki/Ionosonde" target="_blank" title="Wiki ionosonde"><span lang=EN-US style='color:blue'>ionosonde</span></a></span><span lang=EN-US style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'>, that uses high frequency (HF) radio waves for the vertical-incidence remote sounding of the ionosphere, a technology incepted by Sir Edward Appleton in the late 1920s</span><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p></o:p></span></li></ul><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt'><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p> </o:p></span></p><ul type=disc><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1'><span style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'>Digisonde is an acronym for Digital Ionospheric Goniometric Ionosonde</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p></o:p></span></li></ul><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p> </o:p></span></p><ul type=disc><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1'><span lang=EN-US style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'>Digisonde belongs to a class of <i>advanced</i> ionosondes that evaluate angle of arrival, polarization, and Doppler frequency shift of skywave signals reflected from the ionosphere, in addition to their travel time that is conventionally used to determine range to the reflection point.</span><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p></o:p></span></li></ul><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt'><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p> </o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><img border=0 width=545 height=413 id="Imagem_x0020_3" src="cid:image006.jpg@01CC4D40.179E5580" alt="Descrição: Digisonde 4D"></span><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p></o:p></span></p><ul type=disc><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo2'><span lang=EN-US style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'>The first Digisonde was deployed at Eglin AFB in Florida in 1969</span><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p></o:p></span></li></ul><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt'><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p> </o:p></span></p><ul type=disc><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo2'><span lang=EN-US style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'>123 digisondes have been built by UMLCAR engineers as of March 2010 </span><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p></o:p></span></li></ul><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt'><span lang=EN-US style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'>Full station list by instrument is </span><span style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'><a href="http://umlcar.uml.edu/stationlist_instrument.html" target="_blank" title="Digisonde Station List by instrument"><span lang=EN-US style='color:blue'>here</span></a><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'><o:p> </o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt'><span lang=EN-US style='font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:PT'>Fonte: </span><strong><span lang=EN-US style='font-size:9.0pt;font-family:"Verdana","sans-serif";color:#002060'>UMass Lowell Center for Atmospheric Research website.</span></strong><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:PT'><o:p></o:p></span></p></td><td style='padding:.75pt .75pt .75pt .75pt'></td></tr></table></div><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>