|Subject:||Re: [Discuss-gnuradio] Doppler simulator|
|Date:||Mon, 22 Dec 2014 10:26:42 +0100|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0|
a doppler shift is, mathematically speaking, nothing more than a multiplication with a complex sine, so use a multiply block and a signal source per simulated sattelite.
Now, you might want to update your doppler shift according to a simulated sattelite's position. I recommend having a look at PyEphem, which offers you calculational routines for such things, and writing your own python block to generate the complex sine.
 http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials ; go through tutorials 1, 2, 3
On 12/22/2014 10:14 AM, Saul E. wrote:
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