|
Server : Apache/2.4.62 System : FreeBSD fbsdweb2.web.rcn.net 14.1-RELEASE FreeBSD 14.1-RELEASE releng/14.1-n267679-10e31f0946d8 GENERIC amd64 User : www ( 80) PHP Version : 8.3.8 Disable Function : NONE Directory : /domains/remotesensing/research/ |
Upload File : |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<!-- adapted from a Design by: <a href="http://businesswebsitetemplates.blogspot.com"title="free templates">FREE BUSINESS TEMPLATES</a> -->
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<meta name="keywords" content="GPS, GNSS, Software, Hardware, Research and Development, R&D, Navigation, Signal Simulator, Signal Generator, Receiver, Simulator, Emulator, Transceiver, Front End, RF, Impulse, Real Time, SigSim, Data Acquisition, Galileo, Glonass, UTC, Ultra Tightly Coupled, INS, Ionospheric Receiver, Pseudolite, Radar, Software Radar, Radio, Software Radio, HF Diagnostics, Microwave Rain Gauge, Data Logger, EM Sensor, Jammer, Antenna, FPGA, DSP, High Performance Board, Suman Ganguly, Virginia, Fairfax, SBIR, Small Business, Engineering, Electromagnetics, Signal Processing, Space Weather, Instrumentation, Electronics, Analyzers, Surveillance, Computer Systems, Image Processing, Material Science, Microwave, Electrical Engineering, Electronics Engineering, Upconverter, Downconverter, LNA, L1, L2, L5, C/A, P-Code, Encryption, Ionospheric Sounder, Sounder, spoofer, EW, electronic warfare, C3I, Signal Analyzer, Signal Processor, ST Radar, MST Radar, IST Radar, SAR, GPS Receivers, GNSS Receivers, GPS Simulators, GNSS Simulator, Rain Radar, Ultra Wide Band Radar, Ground Penetrating Radar, HF Radar, Ionosonde, HF Diagnostic, OTH Radar, Satellite Simulator, Communication Simulator, Channel Simulator, Radar Simulator, Attitude Determination, Anti-Jam Receiver"/>
<title>CRS | Research & Development | Space Weather & Physics | Topside Sounder</title>
<link href="style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="wrapper">
<div id="header">
<div id="logo">
<img src="images/crslogo.png" class="floatTL" alt="business" /><br><br><br><br><br>
<div id="nav">
<!-- Css Menu -->
<style>
ul.cssMenu ul{display:none}
ul.cssMenu li:hover>ul{display:block}
ul.cssMenu ul{position: absolute;left:-1px;top:98%;}
ul.cssMenu ul ul{position: absolute;left:98%;top:-2px;}
ul.cssMenu,ul.cssMenu ul {
margin:0px;
list-style:none;
padding:0px 1px 1px 0px;
background-color:#13264d;
background-repeat:repeat;
border-color:#A6A6A6;
border-width:0px;
border-style:solid;
}
ul.cssMenu table {border-collapse:collapse}ul.cssMenu {
display:block;
zoom:1;
float: right;
}
ul.cssMenu ul{
width:197.4px;
}
ul.cssMenu li{
display:block;
margin:1px 0px 0px 1px;
font-size:0px;
}
ul.cssMenu a:active, ul.cssMenu a:focus {
outline-style:none;
}
ul.cssMenu a, ul.cssMenu li.dis a:hover, ul.cssMenu li.sep a:hover {
display:block;
vertical-align:middle;
background-color:#13264d;
border-width:0px;
border-color:#FCEEB0;
border-style:solid;
text-align:left;
text-decoration:none;
padding:5px;
_padding-left:0;
font:12px Arial;
color: #ffffff;
text-decoration:none;
cursor:pointer;
}
ul.cssMenu span{
overflow:hidden;
}
ul.cssMenu li {
float:left;
}
ul.cssMenu ul li {
float:none;
}
ul.cssMenu ul a {
text-align:left;
white-space:nowrap;
}
ul.cssMenu li.sep{
text-align:left;
padding:0px;
line-height:0;
height:100%;
}
ul.cssMenu li.sep span{
float:none; padding-right:0;
width:3;
height:100%;
display:inline-block;
background-color:#A6A6A6; background-image:none;}
ul.cssMenu ul li.sep span{
width:100%;
height:3;
}
ul.cssMenu li:hover{
position:relative;
}
ul.cssMenu li:hover>a{
background-color:#93AEE6;
border-color:#4C99AB;
border-style:solid;
font:12px Arial;
color: #FFFFFF;
text-decoration:none;
}
ul.cssMenu li a:hover{
position:relative;
background-color:#93AEE6;
border-color:#4C99AB;
border-style:solid;
font:12px Arial;
color: #FFFFFF;
text-decoration:none;
}
ul.cssMenu li.dis a {
color: #AAAAAA !important;
}
ul.cssMenu img {border: none;float:left;_float:none;margin-right:5px;width:16px;
height:16px;
}
ul.cssMenu ul img {width:16px;
height:16px;
}
ul.cssMenu img.over{display:none}
ul.cssMenu li.dis a:hover img.over{display:none !important}
ul.cssMenu li.dis a:hover img.def {display:inline !important}
ul.cssMenu li:hover > a img.def {display:none}
ul.cssMenu li:hover > a img.over {display:inline}
ul.cssMenu a:hover img.over,ul.cssMenu a:hover ul img.def,ul.cssMenu a:hover a:hover img.over{display:inline}
ul.cssMenu a:hover img.def,ul.cssMenu a:hover ul img.over,ul.cssMenu a:hover a:hover img.def{display:none}
ul.cssMenu a:hover ul{display:block}
ul.cssMenu span{
display:block;
background-image:url(./images/arrv_blue_2.gif);
background-position:right center;
background-repeat: no-repeat;
padding-right:8px;}
ul.cssMenu li:hover>a>span{ background-image:url(./images/arrv_white_2.gif);
}
ul.cssMenu a:hover span{ _background-image:url(./images/arrv_white_2.gif)}
ul.cssMenu ul span,ul.cssMenu a:hover table span{background-image:url(./images/arr_blue_2.gif)}
ul.cssMenu ul li:hover > a span{ background-image:url(./images/arr_white_2.gif);}
ul.cssMenu table a:hover span{background-image:url(./images/arr_white_2.gif)}
ul.cssMenu li a.cssMenui0{
font:n;
}
ul.cssMenu li a.cssMenui0:hover{
font:o;
}
</style>
<ul class="cssMenu cssMenum">
<li class=" cssMenui0"><a class=" cssMenui0" href="../index.html">Home</a></li>
<li class=" cssMenui0"><a class=" cssMenui0" href="../products/products.html"><span>Products & Services</span><![if gt IE 6]></a><![endif]><!--[if lte IE 6]><table><tr><td><![endif]-->
<ul class=" cssMenum">
<li class=" cssMenui"><a class=" cssMenui" href="../products/gps.html">GPS & Navigation Systems</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../products/radio.html">Radio and Radar Systems</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../products/signal.html">Signal Processing & Analyzers</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../products/antenna.html">E.M. Sensors & Antenna Types</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../products/space.html">Space Weather Systems</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../products/instru.html">Instrumentation</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]--></li>
<li class=" cssMenui0"><a class=" cssMenui0" href="research.html"><span>Research & Development</span><![if gt IE 6]></a><![endif]><!--[if lte IE 6]><table><tr><td><![endif]-->
<ul class=" cssMenum">
<li class=" cssMenui"><a class=" cssMenui" href="navigation.html">Advanced Navigation Systems</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="radio.html">Radio & Radar Engineering</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="em.html">Electromagnetics</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="signal.html">Signal & Image Processing</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="surv.html">Surveillance</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="physics.html">Space Weather & Physics</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="comp.html">Computer Systems & Software</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="ee.html">Electrical Engineering</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="science.html">Microwave/Material Science</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="instru.html">Instrumentation</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]--></li>
<li class=" cssMenui0"><a class=" cssMenui0" href="../publications/public.html"><span>Publications</span><![if gt IE 6]></a><![endif]><!--[if lte IE 6]><table><tr><td><![endif]-->
<ul class=" cssMenum">
<li class=" cssMenui"><a class=" cssMenui" href="../publications/journals.html">Journals</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../publications/conf.html">Conference Proceedings</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../publications/reports.html">Reports & Patents</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../publications/press.html">Press Releases</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]--></li>
<li class=" cssMenui0"><a class=" cssMenui0" href="../profile/pro.html"><span>About Us</span><![if gt IE 6]></a><![endif]><!--[if lte IE 6]><table><tr><td><![endif]-->
<ul class=" cssMenum">
<li class=" cssMenui"><a class=" cssMenui" href="../profile/pro.html">Profile</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../profile/bckgd.html">Background</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../profile/mission.html">Mission</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../profile/capabilities.html">Capabilities</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../profile/personnel.html">Personnel</a></li>
<li class=" cssMenui"><a class=" cssMenui" href="../profile/accom.html">Accomplishments</a></li>
<!--<li class=" cssMenui"><a class=" cssMenui" href="../profile/career.html">Careers</a></li>-->
<li class=" cssMenui"><a class=" cssMenui" href="../profile/contact.html">Contact Us</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]--></li>
<li class=" cssMenui0"><a class=" cssMenui0" href="../products/brochures.html">Brochures</a></li>
</ul>
<br> </div>
<div id="bg">
</div>
<div id="main">
<div id="leftcolumn">
<div id="logo">
<h1>Space Weather & Physics</h1>
<h2>Topside Sounder</h2>
<h3>Future Plans</h3>
<p>We have designed and developed a prototype sounder under the sponsorship of ONR. The prototype needs to be adapted to specific missions and integrated with other mission elements and radio beacons to be deployed in a small, inexpensive satellite that can be quickly designed.
<br><br>
Several elements of the proposed topside sounder are novel. Some of the critical subsystems include:</p><br>
<div class="blockquote">
<div class="box">
A. Sounder Hardware
<ol>
<li>
A DSP-based, software-controlled sounder with a coded waveform for improved performance at low power. It is based on multiple Analog Devices AD2106X DSP processors. It also includes a complete Tx-Rx control unit.</li>
<li>
This sounder control unit works closely with the HF transmitter and receiver modules.</li>
<li>
The antenna system design uses the Numerical Electromagnetic Code (NEC). It can transmit between 2-20 MHz. For reception, it obtains the signals needed to determine angle of arrival, and matches antennas dynamically.</li>
<li>
The complete set of prototypes has been tested as a ground-based ionosonde.</li>
</ol>
<br>
B. Sounder Software
<ol>
<li>
We have developed an expert system and data-analysis techniques.</li>
<li>
We have developed a direction-finding algorithm.</li>
<li>
We have developed a synthetic-aperture algorithm will be developed and tested on synthetic data.</li>
<li>
We have developed control sequences for the sounder will be developed.</li>
<li>
We have tested this software on the prototypes and data acquired through them, except for the synthetic-aperture algorithm, tested on synthetic data.</li>
</ol>
<br>
C. System Integration Plan and Engineering Design
<ol>
<li>
Satellite System includes the following: other sensors, payload mass, power requirements, thermal requirements, pointing control and knowledge, on-board data reduction and compression, data storage, telemetry, command handling, interaction among sensors, redundancy and environmental issues. Much of this is determined by the selection of the appropriate satellite bus, e.g., buses made by Spectrum Astro, OSC, and Ball Aerospace.</li>
<li>
Launch System includes the following: launch vehicle, launch site, and certification. This will be affected by the payload, satellite bus, and desired orbit. Possibilities include Pegasus and Taurus, but consideration will not be limited to these.</li>
<li>
Ground Segments include the following: S-band versus X-band telemetry; one versus multiple ground stations; command structure and control; cross-links; data reduction, visualization, and archiving; and data distribution to end users.</li>
<li>
Operational Plan includes the following: agencies, experimental priorities, experimental plans.</li>
</ol>
</div></div>
</div></div>
</div></div>
<div id="rightcolumn">
<div class="blockquote">
<div class="box"><h2>R&D</h2>
<ul>
<li> <a href="navigation.html">Advanced Navigation Systems</a></li>
<li> <a href="radio.html">Radio & Radar Engineering</a></li>
<li> <a href="em.html">Electromagnetics</a></li>
<li> <a href="signal.html">Signal & Image Processing</a></li>
<li> <a href="surv.html">Surveillance</a></li>
<li> <a href="physics.html"><b>Space Weather & Physics</b></a></li>
<li> <a href="comp.html">Computer Systems & Software</a></li>
<li> <a href="ee.html">Electrical Engineering</a></li>
<li> <a href="science.html">Microwave/Material Science</a></li>
<li> <a href="instru.html">Instrumentation</a></li>
</ul>
</div></div><h3>Research Highlights:</h3>
<div class="blockquote">
<div class="box"><ul>
<li><b><a href="physicstopside.html"> Topside Sounder</a></b></li>
<li><a href="physicsrtic.html"> Real-Time Ionospheric Characterization</a></li>
<li><a href="physicsiono.html"> Ionospheric & Magnetospheric Research</a></li>
</ul></div></div> <h3>Topside Sounder:</h3>
<div class="blockquote">
<div class="box"><ul>
<li><a href="physicstopsideben.html">Benefits</a></li>
<li><a href="physicstopsidecomm.html"> Commercial Applications</a></li>
<li><b> Future Plans</b></li>
</ul></div></div>
<br><center><img src="images/TopsideSounder.png" width="200" alt="business" /></center>
</div>
<div id="footer"><p>Copyright © 2010 | <a href="../profile/mission.html">mission</a> | <a href="../profile/contact.html">contact us</a> |<!--<a href="../profile/careers.html">careers</a> | |--> <a href="../sitemap.html">site map</a> | <a href="../search.html">search</a></p></div>
</div>
</body>
</html>