Changes between Version 10 and Version 11 of Architecture/Deployment/Measurements/s3-lg1


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Timestamp:
Jun 2, 2021, 1:39:48 PM (3 years ago)
Author:
mpk2138
Comment:

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  • Architecture/Deployment/Measurements/s3-lg1

    v10 v11  
    1010 || (a) Looking up from campus level  || (b) From Mudd building rooftop ||
    1111
     12columbia_campus_antenna_coverage.png
    1213
    1314==== Coverage
    1415[https://wiki.cosmos-lab.org/wiki/Hardware/Nodes/Measurements Coverage measurements] were performed around the campus area in August 2020. Subsequent measurements were performed in May 2021 to both corroborate the measurements from August 2020 as well as extend the measurement area. In total, 352 measurements were taken in a roughly 5m-spaced grid in the campus and Broadway areas. The measurement results are presented below.
    1516
    16  || Figure 2: Coverage measurement results for {{{s3-lg1}}}.
    17  || [[Image(rssi_coverage_map_s3-lg1.png, 800px)]]
     17 |||||| Figure 2: Coverage measurement results for {{{s3-lg1}}}. ||
     18 || [[Image(rssi_coverage_map_s3-lg1.png, height=400px)]] || [[Image(columbia_campus_antenna_coverage.png, height=400px)]] ||
     19 || (a) Measurement results || (b) 60 degree 3dB antenna beamwidth displayed over campus map ||
    1820
    19 These measurements demonstrate an RSSI of around -85 dBm at a 300m straight-line distance, even in the presence of multiple buildings blocking line of sight. As would be expected, the locations close to the node experience higher RSSI.
     21These measurements demonstrate an RSSI of around -85 dBm at a 300m straight-line distance, even in the presence of multiple buildings blocking line of sight. As would be expected, the locations close to the node and within the 3dB beamwidth experience higher RSSI.
    2022
    21 Of particular note are the measurements in the eastern area of the campus. This area is not only shadowed by several buildings, but is also outside of the beam width of {{{s3-lg1}}}'s antenna. This demonstrates that {{{s3-lg1}}} provides coverage for a significant area of the Columbia campus, making it useful for experiments undertaken in this area.
     23Of particular note are the measurements in the eastern area of the campus. This area is not only shadowed by several buildings, but is also outside of the beamwidth of {{{s3-lg1}}}'s antenna. This demonstrates that {{{s3-lg1}}} provides coverage for a significant area of the Columbia campus, making it useful for experiments undertaken in this area.
    2224
    2325==== To-Do