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kit-cel / gr-radar

GNU Radio Radar Toolbox
GNU General Public License v3.0
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Logged file from File sink having periodic spikes #31

Closed Kulwant2001 closed 6 years ago

Kulwant2001 commented 6 years ago

I have implemented a simple CW radar for doppler measurements using usrp x300 and echotimer. While running it the QT GUI waterfall graph is giving desired results, but the logged file using file sink, when replayed contains periodic high power spikes. Tried with unbuffered on or off both in file sink block, changing the input of file sink to echotimer output, running same flowgraph with N200 usrp, reading the file in matlab but the same result. the Picture of logged file read back and actual runtime QT GUI waterfall graph is attached below.(sorry was having some issue with taking screenshots) img_20180705_230838 img_20180705_233130 thanks in advance

Kulwant2001 commented 6 years ago

Found the problem, it was due to tags not been filtered out. Added tag gate in the flow graph before file sink to solve the problem.