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Doppler radar accuracy - RF Cafe Forums
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Jorrie
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Post subject: Doppler radar accuracy
Posted: Sun Jun 25, 2006 9:30 am
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Joined: Tue Jun 13, 2006
4:22 am Posts: 10 Location: 25.9S 28.1E
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If speeds in space one day get up to a significant
fraction of the speed of light, the relativistic
Doppler radar solution becomes:
(Delta lambda)/lambda
= (1+v/c)/(1-v/c) - 1, which reduces to
~2v/c if
v is very much smaller than c and v is an 'opening
velocity'.
Will someone please tell me the
velocity accuracy of good present day Doppler radars?
I would like to work out how fast relative velocities
in space must become before the error of the radar
equals the error of the low-speed approximation
(2v/c).
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Posted 11/12/2012
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