Re: GPS: Pseudo-random code + Epheris/Almanac =! Pseudo-random code
Jim@xxxxxxxxx wrote:
Ahem,
the way I understand it, it uses doppler to work out the range to a
satelite. The frequency shift, due to doppler, of the radio
transmission itself being the key.
sorry if I'm "off course" here ;-) ( he he, that's a good one
Jim...NOT !)
See Global Positioning System Overview
by Peter H. Dana
http://www.colorado.edu/geography/gcraft/notes/gps/gif/navigate.gif
http://www.colorado.edu/geography/gcraft/notes/gps/gif/gdop.gif
http://www.colorado.edu/geography/gcraft/notes/gps/gps.html#Gdop
Doppler is used to compute velocity
.
Relevant Pages
- Re: DTV delayed
... You, Bub, obviously don't live in tornado alley where local live ... Granted radio has its place but it doesn't have Doppler radar... ... roads anymore,go out and buy a new one.Or,hey,your car needs $1000 worth of ...
(alt.home.repair) - Re: DTV delayed
... You, Bub, obviously don't live in tornado alley where local live radar ... Granted radio has its place but it doesn't have Doppler radar... ... A couple of the local radio stations DO have doppler and can ...
(alt.home.repair) - Re: Time dilation and expanding space
... received signal frequency is reduced but the transmitter is ... The second order component by which relativistic Doppler ... the light after transmission. ... Note that I am not referring time dilation caused by the motion of objects ...
(sci.astro) - Re: Pioneer 10 test of light speed
... the Doppler shift of the known transmission frequency. ... >delay extrapolates beyond a second. ... >"In addition we will transmit a ranging signal to the spacecraft. ...
(sci.astro) - Re: signal detection in doppler
... Because of the doppler effect, the received signal will either be expanded ... or compressed on time axis. ... the expansion or compression is sampling rate conversion. ... Just clarify - a doppler shift isn't modeled by a frequency shift. ...
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