For the constant velocity case, the graphic shows the transmit pulse as having two cycles, and the received pulse as having four cycles of higher frequency, with the received pulse being the same length as the transmit pulse.
Shouldn't the received pulse have the same number of cycles as the transmit pules, and the received pulse be shorter than the transmit pulse (or longer in the case of the target moving away instead of toward the source)?
Or does something non-intuitive happen (probably because of special relativity) resulting in the received pulse gaining energy from the reflection, which is reflected (pun intended) as the pulse being longer than you'd expect classically?
Shouldn't the received pulse have the same number of cycles as the transmit pules, and the received pulse be shorter than the transmit pulse (or longer in the case of the target moving away instead of toward the source)?
Or does something non-intuitive happen (probably because of special relativity) resulting in the received pulse gaining energy from the reflection, which is reflected (pun intended) as the pulse being longer than you'd expect classically?