From: Rob Hardenberg (rob@itr-datanet.com)
Date: Sun Jun 27 2004 - 09:08:19 EDT

• Next message: Scottdalton4@aol.com: "Re: possible decay"

```Hi George,

Seen from the navspasur the satteliet must be at 91,4 degrees azimuth and >
20 degrees elevation for a reflection. The elevation number I'm guesing
based on the transmitter antenna system; it could be less. So I think the
minimum altitude must be > 2000Km. This number is not exacly calculated, but
estimated.

Rob.

----- Original Message -----
From: "George Roberts" <gr@pobox.com>
To: "Rob Hardenberg" <rob@itr-datanet.com>; <SeeSat-L@satobs.org>
Sent: Sunday, June 27, 2004 2:24 PM

> Rob,
>
>     This is very interesting!  One of your requirements is that the
inclination of the
> orbit be 33 degrees or greater.  There is also a minimum altitude
requirement.  Could
> you calculate the minimum altitude (in km or miles) that the Satellite
must be so that when the
> satellite is over 33 degrees North latitude it is visible from your
location *and* from
> navspasur?  These two numbers would help narrow it down to a short list of
satellites.
> And how many degrees above the horizon at your location and at navspasur's
location
> does it have to be?  10 degrees?  This affects the minimum height above
the earth that
> you require.  Give the minimum height and 33 degree minimum inclination
requirement
> back to this list and I think you will get some answers.
>
> - George Roberts
>
> ----- Original Message -----
> From: "Rob Hardenberg" <rob@itr-datanet.com>
> > My question: are there also high orbiting satellites who are big enough
that
> > can reflect the radar signals back to my location? I want to try to
> > there reflection.
> > I can put the keps of the possible kandidates into my tracking software.
> >
>
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