Re: GPS idea
- From: "Abstract Dissonance" <Abstract.Dissonance@xxxxxxxxxxx>
- Date: Thu, 8 Jun 2006 03:28:49 -0500
"The Sorcerer" <Headmaster@xxxxxxxxxxxxxxxx> wrote in message
news:eIQhg.136406$8W1.37296@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Glad to know that what you consider a wasted effort is the same as what
"Abstract Dissonance" <Abstract.Dissonance@xxxxxxxxxxx> wrote in message
news:128fk89k6sip923@xxxxxxxxxxxxxxxxxxxxx
|I was reading some stuff today about GPS and had a few ideas. I'm curious
as
| to if anyone things they have any practicality. I am by no means an
expert
| on GPS and basically this is my first time even reading about some of
the
| specs and stuff. I did take several courses in physics several years
ago
by
| I have forgotten most, if not all of what I have learned. These are just
| ideas and I am not saying they will work or even make sense... just
trying
| to get some feed back. (note, everyone is non-relativistic for
simplicity)
|
|
| I was thinking that one could attach to each satellites two frequencies
to
| transmit on. This might help in solving the problem of the speed of
light
| changing due to the different mediums that it transmits through.
|
| The data that the satellite transmits would include the distance from
itself
| to all other satellites and to a reference on the ground.
|
| The idea for the different frequencies is to somehow build up a
differential
| method of dealing with the change in the speed of light as it passes
from
| the transmitter to the receiver. I'm not sure if it will work but I was
| thinking that, say, if satellite A transmits the signal on frequency X
and
| frequency Y that one might be able to remove the changes in the speed of
| light through the different mediums because it will effect both signals
the
| same amount. Not sure if this would lead to something worthwhile
though.
| Basically it would seem that one could compute the dispersion due to the
| medium between the transmiter and receiver to "repair" the distance
| computed. Maybe there are other ways to do this too by using only one
| signal and by using some modulation method.
|
|
|
| By including the distances(and maybe positions too) from all the
satellites
| from each other, which are able to computed in a vacuum(I think, not
sure
if
| it will go through the ionosphere but maybe the method above could work
| too). This might not be practical as the satellites would have to send
| signals to each other too and some power would be wasted.
|
| It would seem that by knowing the complete geometry of all the
satellites
| one could use that information to compute a more accurate location of
the
| GPS receiver. Basically all the information to find the location on
earth
| would be sent by just one signal. Since the receiver would be getting
| atleast three signals(or six) and a series of data that should be
identical
| except for the computed distances to the reciever from each of the 3
| satellites, it could compute errors in the distances and possibly use
| statistics to increase the accuracy of the data. One could also calcuate
| angles for whatever reason too. By having ground facillaties included,
which
| would essentially be "fixed" satellites, would could tie everything
| together. i.e., angles could be computed from a reference point, say
the
| north and south poles. One could possibly, say, know how far they are
from
| the polar axis and such... which at this point I think at this point one
has
| to reply on "maps" to figure things like that out.
|
| Not sure if that makes sense or would work but just an idea.
|
| Thanks,
| Jon
http://en.wikipedia.org/wiki/Diminishing_returns
I don't really care if I'm parked 0.5435 inches or 13.6324 feet from the
kerb,
I'll only use GPS to find the road I want, and anyway somebody already
parked in my spot. So even if it works, it's a wasted effort.
Androcles
everyone else considers. I'm also glad to know that you happen to know every
application for every possible thing that has been created or will be
created! Are you god?
(Ever thing that this could be used in the field of science? One application
could be to measure the change of large geological structures over time. If
one, say, could get the measurements down to millimeters or even smaller
then one could place a GPS device on, say, a hill(maybe a volcano) and have
all the measurements sent to a computers and over a period of time one could
find out how it is changing. )
Ofcourse I'm sure you'll shoot holes in that too. I didn't actually ask for
your opinion either. I could care less if you think its a good idea or not.
I did ask if it was a feesible solution to increase the resolution(atleast
theoretically). I assume that you don't have much of a clue about what all
that means though... shame... I suppose you are not god? OTH I'm sure you
think you are.
.
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