Changes between Version 126 and Version 127 of Other/Summer/2015/aSDR1


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Timestamp:
Aug 17, 2015, 4:50:05 PM (9 years ago)
Author:
krajput96
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  • Other/Summer/2015/aSDR1

    v126 v127  
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    323 <font color="red"><b> Experiment Seven: </b></font> Transmitter Calibrator <br><br>
     323<font color="red"><b> Experiment Seven: </b></font> Transmitter Calibration <br><br>
    324324Calibration of the nodes is an important step if we are to get better localisation data and results. We have to make sure that the transmitters are transmitting the signals at the set frequency; any other frequency would offset the data. Therefore, we decided to see the difference in signal transmitting when connecting the node to a spectrum analyzer versus antenna to antenna transmission.
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     348<b> Analysis: </b> The left image shows the signal power that is received by transmitters connected via wire to the spectrum analyzer transmitting signals at various frequencies. As evident, they are showing a consistent (linear) increase in power as gain is increased. Conversely, the image on the right shows a rather scattered graph. This is the graph of the same transmitters transmitting via antennas, as opposed to wires. This shows that the wire transmission minimizes propagation errors while wireless transmission is prone to these errors.
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