(meteorobs) The best Meteor detector on Earth

David McCarter dmccarter at sympatico.ca
Tue Sep 18 11:39:19 EDT 2012


Pulse waveforms do have low average power and high peak power when the duty
cycle is low.  But the bandwidth is high, so they are not allowed on the
VHF bands, only the UHF bands where ten's of megahertz are available.

Dave

On Mon, Sep 17, 2012 at 11:20 PM, Jay Salsburg <jsalsburg at bellsouth.net>wrote:

> Hello James****
>
> ** **
>
> My idea is to make a Pulse-Doppler RADAR, not a beacon. Each site will be
> the source of DATA, not Forward Scatter receivers. As you know, with pulse
> modulation, the average power is very low, on the order of a few watts,
> even with a pulse of 1000 watts or more. Again my concern is that there may
> be restrictions on the 6 meter band for Pulse-Doppler RADAR.****
>
> ** **
>
> *From:* meteorobs-bounces at meteorobs.org [mailto:
> meteorobs-bounces at meteorobs.org] *On Behalf Of *James Beauchamp
> *Sent:* Monday, September 17, 2012 12:14 PM
> *To:* cheekygeek at gmail.com; Meteor science and meteor observing
> *Subject:* Re: (meteorobs) The best Meteor detector on Earth****
>
> ** **
>
> The new system is rumored to be X band, pulsed, with integrated array /
> auto-track, so it will not be meteor useable. We are lucky to have Kickapoo
> for meteor scatter as it is.****
>
>  ****
>
> This doesn't mean that something could be worked at the research level
> with NASA, Sandia, or other academic organization to support a
> dedicated meteor emitter.****
>
>  ****
>
> The problem will be the cost of equipment, maintenance, and facilities.  A
> location, equipment, power budget, and maintenance staff would be
> required.  ****
>
>  ****
>
> On the amateur radio side, a stable, CW emitter with periodic ID
> (modulated on the carrier) would be well within the rules.  The challenge
> is the required power.  You'll need lots of it to compensate for the wide
> pattern required for decent sky coverage.  1 KW PEP won't suffice.****
>
>  ****
>
> And it also has to be extremely frequency stable - something the average 6
> meter amateur system doesn't normally have.****
>
>  ****
>
>  ****
>
>
>
> --- On *Sun, 9/16/12, Jay Salsburg <jsalsburg at bellsouth.net>* wrote:****
>
>
> From: Jay Salsburg <jsalsburg at bellsouth.net>
> Subject: Re: (meteorobs) The best Meteor detector on Earth
> To: cheekygeek at gmail.com, "'Meteor science and meteor observing'" <
> meteorobs at meteorobs.org>
> Date: Sunday, September 16, 2012, 10:57 PM****
>
> Thank you ****
>
>  ****
>
> My message did not express any suggestion that NAVSPASUR has no benefits
> to National Security because that Faction is the operator. Since I now know
> that NAVSPASUR is being decommissioned and replaced with a higher frequency
> system, my efforts to take advantage of NAVSPASUR will be transferred to
> the new system, which I suspect will operate at 432 MHz hopefully at the
> same location as the Kickapoo Site. But that means waiting for something to
> happen, which sucks. If anyone knows of helpful web links to help decide a
> course of action please forward them.****
>
>  ****
>
> My message to create a Proposal was a plea for action to this (meteorobs)
> group.****
>
>  ****
>
> *From:* meteorobs-bounces at meteorobs.org [
> mailto:meteorobs-bounces at meteorobs.org <meteorobs-bounces at meteorobs.org>]
> *On Behalf Of *CheekyGeek
> *Sent:* Sunday, September 16, 2012 8:20 AM
> *To:* Meteor science and meteor observing
> *Subject:* Re: (meteorobs) The best Meteor detector on Earth****
>
>  ****
>
> It might be worth considering, in this age of budget cuts, whether your
> laudable goals might have unintended consequences. You might put a system
> that is on no "bean counter's" radar under scrutiny for shutdown,
> particularly if you make your case that there is no ancillary National
> Security benefits from the project.****
>
>  ****
>
> You may be thinking of how NOAA freely shares much of its weather data as
> the model for your NAVASPASUR data sharing plan. But weather has the
> general public's interests and direct benefit on its side. Only a small
> fraction of us care about meteor data.****
>
>  ****
>
> Perhaps an intermediate step might be to try to get the government to
> share the data with university research departments. It should be easier to
> get university faculty members, department chairs, Deans, etc. to sign a
> petition for such a data sharing initiative (or start with a "pilot
> program". Nothing involving government/politics happens overnight ( except
> violent overthrow). To achieve your goal I would recommend plotting out the
> necessary " baby steps".****
>
>  ****
>
>
>
> On Sunday, September 16, 2012, Jay Salsburg wrote:****
>
> Hello
>
> My name is Jay Salsburg. I have been monitoring the NAVASPASUR SPACE RADAR
> transmitter in Kickapoo Texas for many years. I am beginning to wonder why;
> Why am I doing this? I get no benefits other than the unique direct
> experience of hearing and seeing Doppler events caused by Objects moving in
> Low Earth Orbit over North Texas, Southern Oklahoma, and Eastern New
> Mexico.
>
> The point is that the US Government operates the best Meteor Detection
> Network on the Planet but does not share the Data.
>
> I CALL FOR ACTION: for the US Government to share the live DATA Stream and
> any Archives of DATA of the NAVSPASUR Receiver array, in the name of
> Science.
>
> I imagine the best approach is to Draft a Proposal authored by the Meteor
> Observation Community to be presented to Congress. Expecting opposition
> from
> certain unfriendly US Government elements in the name of "National
> Security," those who may oppose are actually not in charge of this
> Instrumentality and its DATA. Protected by Congressional Acts, Congress is
> in charge of this system and National Security is not the issue, Money is
> the issue as it is always the issue.
>
> Please provide comments, ideas, and suggestions.
>
> Jay
>
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