Changes between Version 13 and Version 14 of Tutorials/k0SDR/Tutorial04a


Ignore:
Timestamp:
Jan 2, 2013, 3:07:16 PM (11 years ago)
Author:
nilanjan
Comment:

—

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  • Tutorials/k0SDR/Tutorial04a

    v13 v14  
    108108
    109109 * The spectrum sensing code interfacing with the USRP is located in the node under the following directory: /root/uhd/host/examples/ - the two files of interest are CWriteOML_spectrum.h and spectrum.cpp. This version of the code uses an FFT to detect spectrum activity. This code can be modified/tweaked for testing other sensing schemes as well.
     110
     111== Logging spectrum data directly to an OML server ==
     112
     113* Spectrum data can also be logged directly to an OML server. In the above examples the data was recorded to a local file stored on the node itself. To log directly to an oml sever, run the ''spectrum_console'' application with the '''--oml''' option specified with an ip-address:port-number of the oml server. The following would record to the oml-server running on the grid console:
     114{{{
     115nilanjan@console.grid:~/UHD/SPECTRUM/w$ ./spectrum_console --rate 8e6 --num-bins 1024 --time 5 --oml oml:3003 --node node3-3,node8-8,node13-13 --freq 5.0e9
     116}}}
     117
     118 * The data is recorded in the database file /var/lib/oml/spectrum_measurement.sq3 on the grid console. The content of the file can be viewed using the following command:
     119{{{
     120nilanjan@console.grid:~/UHD/SPECTRUM/w$ sqlite3 /var/lib/oml2/spectrum_measurement.sq3 ".dump"
     121}}}
     122
     123 * When logging to an oml sever the magnitude value of the fft bins are stored in binary format. The first entry of the db file is shown below. So when dumping the file contents the ftt bins data is shown as consecutive ascii representation of the binary floating point numbers.
     124{{{
     125PRAGMA foreign_keys=OFF;
     126BEGIN TRANSACTION;
     127CREATE TABLE _senders (name TEXT PRIMARY KEY, id INTEGER UNIQUE);
     128INSERT INTO "_senders" VALUES('nodeW\_',1);
     129INSERT INTO "_senders" VALUES('nodeW^LE',2);
     130INSERT INTO "_senders" VALUES('nodeWì{',3);
     131CREATE TABLE _experiment_metadata (key TEXT PRIMARY KEY, value TEXT);
     132INSERT INTO "_experiment_metadata" VALUES('start_time','1355941828');
     133CREATE TABLE "spectrum_packet_info" (oml_sender_id INTEGER, oml_seq INTEGER, oml_ts_client REAL, oml_ts_server REAL, "sampling" INTEGER,
     134 "cfreq_MHz" REAL, "gain_dB" INTEGER, "FFTLength" INTEGER, "FFTNum" TEXT, "FFTBins" BLOB);
     135INSERT INTO "spectrum_packet_info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
     136}}}