14 Doppler Flashcards
0
Q
Frequency shifts correspond to velocity of _________.
A
RBC
1
Q
Frequency shift is due to?
A
Motion which could be part of the source, receiver, or both
2
Q
Brighter pixels suggest what?
A
More RBC’s moving at the velocity created by the frequency shift.
3
Q
Black or no pixels suggest….
A
No shift
4
Q
Higher angle suggest a _______ frequency shift.
A
Lower
5
Q
Big frequency shift suggest _______ angle.
A
Low or small
6
Q
Why does the guy on the hill not hear much of a frequency shift as the train passes?
A
B/c his angle is very high close to perpendicular which is the worst Doppler angle.
7
Q
As your Cosine gets smaller your angle gets _______.
A
Bigger
8
Q
Angle 0 = _______cosine
Angle 45= _______ Cosine
A
0= 1.0
45= .70
9
Q
Angle 60 = _______cosine
Angle 90= ________ Cosine
A
60 = 50
90 = 0.00
