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From: | open bts |
Subject: | [Discuss-gnuradio] decoding NTSC tv |
Date: | Fri, 10 Jun 2011 09:12:50 -1000 |
I'm looking to decode NTSC with my gnuradio. I found this http://www.danielgarcia.info/thesis/ online where someone used an older USRP and gnuradio version to decode NTSC and PAL. I was able to mangle his script a bit to run with newer gnuradio and UHD. (I hard-coded in some of the parameters for quick testing, it needs some polish once completed). However I still just get a black screen, so we're not all the way there yet. Anyone around familiar with this code? The original code seemed to have a sample rate of around 1Ms/sec (ie. adc rate 64M decimated 64 times, if I read the code correctly). Is this enough for a tv signal? It looks like an NTSC channel is around 6M wide (with color and sound), right? I'm going to try to get a stronger signal to test with and play with it some more, but if anyone is interested in helping, I'd welcome the assistance. |
uhd_tv_rcv_testingNTSC.py
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