Changes between Version 59 and Version 60 of Other/Summer/2025/mlCoexist


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Timestamp:
Jul 15, 2025, 5:08:52 PM (4 weeks ago)
Author:
aw1086
Comment:

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  • Other/Summer/2025/mlCoexist

    v59 v60  
    6666=== Week 6 (6/30 - 7/3): ===
    6767**Slides:** [https://docs.google.com/presentation/d/1RtxGqrlTlRKB1sTNcQEXK1tM1A_ah58ShNB8DlTKeoo/edit?usp=sharing Week 6 Presentation]
    68 - Generated approximately 400 graphs for different RFI scenarios, which can be categorized into:
    69  1. Transition band interference among center frequencies (fc1, fc2, fc3)
    70  2. Out-of-band situations
     68- Finished generating 348 sets of graphical data for the following inference scenarios:
     69 1. Center frequencies 1423.5mHz(fc1), 1433.5mHz(fc2), 1443.5mHz(fc3) for transition band
     70 2. Center frequencies 1440.5mHz(fc1), 1442.5mHz(fc2), 1444.5mHz(fc3) for out-of-band
    7171- Identified clean vs. RFI-contaminated signal shapes in Power Spectral Density (PSD) plots:
    72  1. Uniform (Clean): flat-top spectrum
    73  2. Spikes (RFI): abrupt, sharp spikes within or outside the band
     72 1. Uniform (Clean): flat-top spectrum, power emitted uniformly across bandwidth
     73 2. Spikes (RFI): abrupt, sharp spikes in power at random frequency levels
    7474\\
    7575\\
    … …  
    8181 * ML Models
    8282   * Developed a CNN for RFI detection using pre-trained model (ResNet-18) with the last classification layer modified and retrained 
    83    * Developed SVM as a baseline to assess the efficiency of the CNN approach (potentially underutilization) 
     83   * Developed SVM as a baseline to assess the efficiency of the CNN approach (potentially underutilization of the neural network) 
    8484      * Performed cross-validation to make sure the models were not overfitting
    8585      * Both models reached >95% accuracy
    8686
    87  * Continued obtaining data from transition band (100 additional rows in dataTable).
     87 * Continued obtaining data from transition band (100 additional rows in dataTable)
    8888
    89  * Identified Friis Transmission Formula & Stefan-Boltzmann Law which will be used to find beam efficiency.
     89 * Identified Friis Transmission Formula & Stefan-Boltzmann Law which will be used to find beam efficiency
    9090
    9191\\