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From: | Kevin McQuiggin |
Subject: | Re: [Discuss-gnuradio] INMARSAT wide signal question |
Date: | Tue, 03 May 2016 19:02:00 -0700 |
Hi Henry: I have an Inmarsat demodulator working for the lower speed control channels. I am writing a program to decode the traffic, but this is not a trivial task. Think on the order of 1000 lines of C. It is "almost" working, I am hoping for valid output in the next week or so, depending on my free time. My program is currently a standalone program, but once it's done it could conceivably be converted to one or more gnuradio blocks. I suggest the following document to give you background on the channel specifications for Inmarsat: The demodulation is fairly easy, read the spec document and the channel characteristics are pretty well described. My gnuradio demodulator is based on the GMSK demod block. I'm using a home brew patch antenna, and the LNA4ALL low noise amplifier. Kevin Sent from my iPad
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