Changes between Version 4 and Version 5 of Internal/WiMax

Timestamp:

Apr 25, 2011, 8:00:41 PM (14 years ago)

Author:

nilanjan

Comment:

—

Internal/WiMax

@@ -63 +63 @@
 4. Run ''wimax_gps_oml2'' collection application.
 {{{
-./wimax_gps_oml2 --oml-id 4 --oml-exp-id exp4 --oml-server localhost:3003mple a Garmin USB Receiver - model#: GPS18x-5Hz. Other compatible GPS models can be found on  http://gpsd.berlios.de/hardware.html
-Installation / setup procedures
-
-1. Edit the /etc/apt/sources.list and add the following line:
-
-    deb http://packages.orbit-lab.org/ubuntu jaunty main
-
-2. Update information based on the changed sources.list. 
+./wimax_gps_oml2 --oml-id 4 --oml-exp-id exp4 --oml-server localhost:3003
 }}}
+This will create an sqlite database file (exp4.sq3) on the oml server.
 
 == Troubleshooting GPS Service Daemon ==
 Please refer to troubleshooting ''gpsd'' please refer to http://gpsd.berlios.de/troubleshooting.html.
 
+== Sample data ==
+Here's a snapshot of drive data collected around the Wimax BS at Rugters Winlab.
+
+[[Image(gps_drive_rssi.png)]]
+
 == Post processing data ==
-After the application is run, it'll create an sql file on the oml server. Processing of this file to extract the measured data can be done in several ways. 
+After the application is run, it'll create an sql file on the oml server. Processing  this file to extract the measured data can be done in several ways. The steps outlined here can be used to generate the image shown above.
 
-== Sample data ==
-Here's a snapshot of the sample data collected around the Wimax BS at Rugters Winlab.
-[[Image(Excelexample.PNG)]]
+1. Process the sql file into delimited ascii text.
+{{{
+sqlite3 exp4.sq3 "select * from wimax_measurements;" > exp4.dat
+}}}
+
+2. Extract the rssi field from delimited ascii text file. This was done via awk script: rssi.awk
+{{{
+awk -f rssi.awk exp4.dat > exp4_rssi.dat
+}}}
+