Software capability questions

Tue, 24 Aug 1999 14:05:17 -0600

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                                   General Dynamics Information Systems
                                                        Senior Engineer
                                                         (303) 649-7691
                                         8005 S. Chester St., Suite 325
                                                    Englewood, CO 80112
                                                jonathan.s.lee@gd-is.com

Sir or Madam,

My name is Jonathan Lee and I am a senior engineer for General Dynamics
Information Systems in Englewood, Colorado. I have included a list of
questions that would help me perform a trade study on some commercial
software. Please send any information that answer these questions. Thank
you very much for your time.

                              Jonathan Lee
                         1999 Aug 24 1344 local
Technical capabilities

   * WGS84 earth model compliant? Need header or constants file for
     verification.
   * Validated? Against what standards?
   * Switch able from WGS84 to WGS72?
   * J2000?
   * GPS compatible?
   * Coordinate systems available. ECI, ECEF?
   * Debugging capabilities?
   * Propagate or predict from TLES? Duration of prediction?
   * Predictor types? Integrator used for position determination?
   * Access to target?
   * Gap time?
   * Mean time to revisit?
   * Attitude modeling capability?
   * Drag models?
   * Atmospheric conditions?
   * Terrain model?
   * Constellation management?
   * Communications traffic simulation for both space and ground
     segments?
   * Interface with other software packages?

Graphics

* Footprint projection as a function of RF, grazing angle...etc?
 * LOS highlight during window of opportunity?
 * LOS un-highlighting during gap?
 * Level of map detail?
 * Cylindrical earth map with data overlay?
 * Contour package?
 * Histograms?
 * Accept GS <lat,lon> and sat <t,a,e,i,O,M,n> and show coverage?
 * Compute and display statistics for above technical quantities?
 * ìMovieî display capability?
 *

Costs

   * Cost?
   * Greater than one user -- site license price break?
   * Platforms?
   * User support?

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<div align=right>General Dynamics Information Systems
<br>Senior Engineer
<br>(303) 649-7691
<br>8005 S. Chester St., Suite 325
<br>Englewood, CO 80112
<br>jonathan.s.lee@gd-is.com</div>

<p>
</p>

<p>
Sir or Madam,</p>

My name is Jonathan Lee and I am a senior engineer for General Dynamics
Information Systems in Englewood, Colorado. I have included a list of questions
that would help me perform a trade study on some commercial software. Please
send any information that answer these questions. Thank you very much for
your time.
<center>
Jonathan Lee
 1999 Aug 24 1344 local</center>
Technical capabilities
<ul>
<li>
WGS84 earth model compliant? Need header or constants file for verification.</li>

<li>
Validated? Against what standards?</li>

<li>
Switch able from WGS84 to WGS72?</li>

<li>
J2000?</li>

<li>
GPS compatible?</li>

<li>
Coordinate systems available. ECI, ECEF?</li>

<li>
Debugging capabilities?</li>

<li>
Propagate or predict from TLES? Duration of prediction?</li>

<li>
Predictor types? Integrator used for position determination?</li>

<li>
Access to target?</li>

<li>
Gap time?</li>

<li>
Mean time to revisit?</li>

<li>
Attitude modeling capability?</li>

<li>
Drag models?</li>

<li>
Atmospheric conditions?</li>

<li>
Terrain model?</li>

<li>
Constellation management?</li>

<li>
Communications traffic simulation for both space and ground segments?</li>

<li>
Interface with other software packages?</li>
</ul>

<p><br><b><u>Graphics</u></b>
<ul>
<li>
Footprint projection as a function of RF, grazing angle...etc?</li>

<li>
LOS highlight during window of opportunity?</li>

<li>
LOS un-highlighting during gap?</li>

<li>
Level of map detail?</li>

<li>
Cylindrical earth map with data overlay?</li>

<li>
Contour package?</li>

<li>
Histograms?</li>

<li>
Accept GS &lt;lat,lon> and sat &lt;t,a,e,i,O,M,n> and show coverage?</li>

<li>
Compute and display statistics for above technical quantities?</li>

<li>
“Movie” display capability?</li>

<li>
</li>
</ul>
<b><u>Costs</u></b>
<ul>
<li>
Cost?</li>

<li>
Greater than one user -- site license price break?</li>

<li>
Platforms?</li>

<li>
User support?</li>
</ul>
</html>

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