You can use an accelerometer to estimate doppler with the stationary frequency
source.
George William Herbert
Sent from my iPhone
On Aug 2, 2015, at 6:54 PM, Ken Biba <kenbiba@xxxxxx> wrote:
Perhaps. Below 500 m/s I simply do not see that.
Ken Biba
Novarum, Inc.
415-577-5496
On Aug 2, 2015, at 6:52 PM, Henrik Schultz <henrik@xxxxxx> wrote:
Doppler shift kills that idea - rocket is travelling away from frequency
reference at high velocity. Some are using that for determining speed, so it
is noticable.
/H
------ Original Message ------
From: "George Herbert" <george.herbert@xxxxxxxxx>
To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
Sent: 8/2/2015 6:23:42 PM
Subject: [AR] Re: GPS again....
Out of curiosity... Has anyone considered a different frequency source
while under acceleration?
Freerunning PLL? Have a crystal on the ground transmitting the frequency?
...
George William Herbert
Sent from my iPhone