Changes between Version 91 and Version 92 of Other/Summer/2015/aSDR2

Timestamp:

Jul 15, 2015, 7:23:53 PM (9 years ago)

Author:

mlcoll

Comment:

—

Other/Summer/2015/aSDR2

@@ -128 +128 @@
   </tr>
   <tr>
-    <td colspan="2"><center><b>Figure 1. Waterfall plot and animated power vs. frequency plot generated using wiserd FFT data.<b><center></td>
+    <td colspan="2"><center><b>Figure 1. Waterfall plot (left) and animated power vs. frequency plot (right) for Experiment 1 generated using wiserd FFT data.<b><center></td>
   </tr>
 </table>
@@ -150 +150 @@
   </tr>
   <tr>
-    <td><center><b>Figure 2. Waterfall plot generated from raw IQ samples.<b><center></td>
+    <td><center><b>Figure 2. Waterfall plot generated from raw IQ samples from Experiment 1.<b><center></td>
   </tr>
 </table>
@@ -171 +171 @@
   </tr>
   <tr>
-    <td><center><b>Figure 3. Waterfall plot containing frequencies from two transmitters, generated using wiserd FFT data.<b><center></td>
+    <td><center><b>Figure 3. Waterfall plot containing frequencies from two transmitters, generated using wiserd FFT data from Experiment 2.<b><center></td>
   </tr>
 </table>
@@ -180 +180 @@
 Once we have the experiment set up, we can extract IQ samples from the receiver and use them in our MATLAB processing script.
 [[BR]][[BR]]
-The script currently generates a waterfall plot, plots individual FFTs and applies a simple peak-finding algorithm to identify possible transmitted frequencies. See //Figure 4.//
+To reduce the size of our output data, we reduced the receiver sampling rate, shortened the time span of the experiment to 1.5 seconds, and confined the transmitters to a smaller spectrum of frequencies.
+[[BR]][[BR]]
+The MATLAB script currently generates a waterfall plot, plots individual FFTs and applies a simple peak-finding algorithm to identify possible transmitted frequencies. See //Figure 4.//
+
+{{{#!html
+
+<table align=center cellpadding=10 width=90%>
+  <tr>
+    <td><img src="http://www.orbit-lab.org/raw-attachment/wiki/Other/Summer/2015/aSDR2/exp2_1.png" width=100%></td>
+    <td><img src="http://www.orbit-lab.org/raw-attachment/wiki/Other/Summer/2015/aSDR2/exp2_2.png" width=100%></td>
+  </tr>
+  <tr>
+    <td colspan="2"><center><b>Figure 4. Waterfall plot (left) and an example of the peak-finding algorithm applied to an FFT (right), generated using IQ samples from Experiment 2.<b><center></td>
+  </tr>
+</table>
+
+
+}}}