AW&ST: U2 & UAV Sensors

From: "Frank Markus" 
Subject: AW&ST: U2 & UAV Sensors
Date: Tue, 14 Sep 1999 21:13:50 -0400

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There is an article on page 24 of the September 6 issue of Aviation Week and
Space Technology that may be of interest.  The headline is  headlined ‘Gnat
Exploits Advance SAR.’

The subject of the article is the Improved-Gant UAV by General Atomics (“the
Central Atomics favorite unmanned aerial vehicle”)  which has an improved
synthetic aperture radar (SAR.)   After discussing the capabilities of the
new SAR (4”), the article mentions that the resolution of the J-STARS is
about 12-14 feet.  And continues “The latest model of the U-2, which keeps
watch on North Korea, can produce a granularity of 1-3 ft.”   The new SAR
package weighs no more than 115 lb. They are trying to reduce the weight by
another 15 pounds for the next version of the UAV which will be called the
Prowler II UAV.

The resolution of the new SAR is described as being able to “see details
smaller than a baseball – including footprints in sort terrain like sand or
dust – through the heaviest clouds or the darkest night.”

“The radar’s imaging was designed to look as much like an optical system as
possible.  The system can detect very small changes in the scene between one
pass and the next.  Recently, the radar has been further refined to detect
moving targets.”

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<p class=3DMsoNormal><span class=3DEmailStyle17><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>There is an article on page 24 of the September 6 issue of =
Aviation Week
and Space Technology that may be of interest.<span =
style=3D"mso-spacerun:
yes">  </span>The headline is<span style=3D"mso-spacerun: =
yes"> 
</span>headlined ‘Gnat Exploits Advance =
SAR.’<o:p></o:p></span></font></span></p>

<p class=3DMsoNormal><span class=3DEmailStyle17><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'> <o:p></o:p></span></font></span></p>

<p class=3DMsoNormal><span class=3DEmailStyle17><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>The subject of the article is the Improved-Gant UAV by General =
Atomics
(“the Central Atomics favorite unmanned aerial =
vehicle”)<span
style=3D"mso-spacerun: yes">  </span>which has an improved =
synthetic
aperture radar (SAR.)<span style=3D"mso-spacerun: yes">   =
</span>After
discussing the capabilities of the new SAR (4”), the article =
mentions that the
resolution of the J-STARS is about 12-14 feet.<span =
style=3D"mso-spacerun:
yes">  </span>And continues “The latest model of the U-2, =
which keeps
watch on North Korea, can produce a granularity of 1-3 ft.”<span
style=3D"mso-spacerun: yes">   </span>The new SAR package =
weighs no
more than 115 lb. They are trying to reduce the weight by another 15 =
pounds for
the next version of the UAV which will be called the Prowler II =
UAV.<o:p></o:p></span></font></span></p>

<p class=3DMsoNormal><span class=3DEmailStyle17><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'> <o:p></o:p></span></font></span></p>

<p class=3DMsoNormal><span class=3DEmailStyle17><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>The resolution of the new SAR is described as being able to =
“see details
smaller than a baseball – including footprints in sort terrain =
like sand or
dust – through the heaviest clouds or the darkest =
night.”<o:p></o:p></span></font></span></p>

<p class=3DMsoNormal><span class=3DEmailStyle17><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'> <o:p></o:p></span></font></span></p>

<p class=3DMsoNormal><span class=3DEmailStyle17><font size=3D2 =
color=3Dblack
face=3DArial><span =
style=3D'font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>“The radar’s imaging was designed to look as much =
like an optical system
as possible.<span style=3D"mso-spacerun: yes">  </span>The system =
can detect
very small changes in the scene between one pass and the next.<span
style=3D"mso-spacerun: yes">  </span>Recently, the radar has been =
further
refined to detect moving =
targets.”<o:p></o:p></span></font></span></p>

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Created: Tue Sep 14 22:12:35 EDT 1999