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From: | Marcus Müller |
Subject: | Re: [Discuss-gnuradio] GNU Radio flow graph for Spectrum sensing |
Date: | Thu, 14 Aug 2014 11:29:54 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 |
Hi Rodrigo, both is right, due to Parseval's Theorem stating that energy of a signal in time and frequency domain is equivalent. Regarding "File is large": of course it is; I don't know what sampling rate you're using, but assume you have 1MS/s of complex float, that will be 2*32bit*10^6/s = 8MB/s of data. Regarding "it cannot be opened": Opened by what? Maybe you're not aware of: http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#What-is-the-file-format-of-a-gr_file_sink-How-can-I-read-files-produced-by-a-file-sink Greetings, Marcus On 13.08.2014 23:29, Rodrigo Rozário
wrote:
Hi Martin, I am generating by the following flowgraph: RTL2832 source -> FFT -> File Sink I tried too: RTL2832 -> File Sink Is it right? 2014-08-13 9:00 GMT-03:00 Martin Braun <address@hidden>:How are you generating those files? On 08/12/2014 01:30 AM, Rodrigo Rozário wrote:Hi guys, I'm trying to configure a spectrum analyzer with GNU Radio and I had a many problems. I tried a lot of ways to do it but all of them failed. More specifically, I need to get information about the FFT and store it. I tried the following: - I get data from the block RTL2832 and store it: this is generates a very big file data end a can't open. In a file of a few seconds of storage (50Mb) I can't recognize the power values. - I try to store and after open it on a editor, but not work. I think that there is any problem in the format of the data stored. Can you help? Anyone already can do it? -- /*Rodrigo Rozário */ /CREA-DF - 21339/D-DF - Professional Registration/ /Engenheiro de Redes de Comunicação - //Network Engineering/ /Universidade de Brasília - //University of Brasília/ / / _______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio_______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio |
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