--- On Fri, 8/1/10, Edward Cole <kl7uw at acsalaska.net> wrote:
> The rate of change of Doppler is a
> sinusoidal function, so...
>
> Think of a sine wave: the change in amplitude is highest
> close to the zero crossing and smallest around the plus
> and minus maximums.
The graphs at http://www.qsl.net/vk3jed/doppler.html
show this well.
Trevor M5AKA