Three satellites with synchronous Cesium clocks transmit
and the receiver records their time stamps. A moment later they transmit
again and the receiver records a second set of time stamps.
distance = (time)(speed of light)
and the three distances from the receiver to the satellites are known.
"Laurence Reeves" <l@[EMAIL PROTECTED]
> wrote in message
news:lY2dnX5q-6PrqWTanZ2dnUVZ8qqlnZ2d@[EMAIL PROTECTED]
> Jon G. wrote:
>> "Laurence Reeves" <l@[EMAIL PROTECTED]
> wrote in message
>> news:crOdnbwQqc7xUGXanZ2dneKdnZydnZ2d@[EMAIL PROTECTED]
>>> jmorriss@[EMAIL PROTECTED]
wrote:
>>>> On Apr 5, 10:20 pm, "U7 1000k" <y@[EMAIL PROTECTED]
> wrote:
>>>>> GPS Solution
>>>>> Nested Parabolas
>>>>>
>>>>> http://mypeoplepc.com/members/jon8338/math/
>>>> So, where do we buy these GPS receivers with built in cesium or
>>>> rubidium atomic clocks?
>>> Hey! Not fair. I only got one parabola, along with a bunch of other
>>> bendy lines. The label said there was gonna be more than one parabola
in
>>> the nest. I feel cheated.
>>>
>>
>> Look again, blind spotty.
>>
>> The updated site for those requiring spoon feeding is,
>>
>> http://mypeoplepc.com/members/jon8338/math/
>>
>>
> Strange person.
>
> In the GPS instance, you assert that you have three distances. You do
not.
> You have three timestamps, transmitted by the satellites. As jmorriss
> observed, you have no accurate timestamp at your location, thus you only
> know the three distances in a form d0+C, d1+C and d2+C, where C is a
> constant you have only rather inaccurate knowledge of.
>
> In the latter case, I assumed that you were using the word "parabola" in
a
> rigorous mathematical sense, hence only your blue, m=0 curve is a
> parabola, and is not "nested".
>
> If you are only using the term "parabola" in the loose sense of a curve
> that vaguely resembles a parabola, I would admit that the curves with
m>0
> are tolerable, but the self-intersecting curves with m<0 are probably
not.
> I guess that would be a matter of taste.
>
> --
> Lau AS! d-(!) a++ c++++ p++ t+ f-- e++ h+ r--(+) n++(*) i++ P- m++
> ASC Decoder at <http://www32.brinkster.com/ascdecode/>
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