Re: [Discuss-gnuradio] DOPPLER SHIFT

Hi Marcus and All 

Thank you very much for your reply

Apart from Gpredict, which other way could I use for doppler shifting for satellite tracking. 

Please what do you say about Hamlib?‎ 

Which other method can I use to control HackRF frequency from satellite tracker on GNUradio? 

Best‎ Regards

Ernest.

Sent from my BlackBerry 10 smartphone.

From: Marcus Müller Sent: Friday, March 18, 2016 6:35 PM To: discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] DOPPLER SHIFT

Hi Ernest,
I saw your first mail, too, but I was really busy at that time.

Now, what your error message indicates is that gpredict wasn't properly installed. Not having used that myself, I can't really be of much help, but you should first of all check that if you run a python2 prompt, "import gpredict" doesn't fail with the same error.

Best regards,
Marcus

On 03/18/2016 12:43 PM, ERNEST MATEY wrote:

Hi All,

I am trying to track Satellite for CW  signal receiving and analysis on my GNURadio.  

I know I need some tracking with Doppler shift. 

What is the best way to do this?

Now, I have GPredict installed hoping to use it. 

I have added the GPredict doppler block to my GRC library blocks and added the block to my flow graph hoping to get Doppler shift from my engaged GPredict 

I have set my Ports correctly but I have an error.

ImportError: No module named gpredict. 

What can I do?  

I also learnt I can control my receiver ( Hackrf) frequency dir‎ectly from Gpredict using Hamlib. Will this work?  

I tried to install Hamlib but installation says will delete some GRC files before Hamlib will work‎. I don't want to temper with my healthy running GRC 

What can I do for my Doppler Shift?

I am on Ubuntu 14 and I am very new to these thing

Thank you for sharing your expertise.

God Bless you!  

Sent from my BlackBerry 10 smartphone.

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