Documentation
Skaha-Drone
Skaha-Drone
  • Introduction: Digital L-Band (1.4 GHz) Polarimeter for UAVs
  • Microwave Polarimetry
    • Radio Wave Polarization
  • Technical Description
    • Mounting Options
    • Antenna
    • Control Unit
    • RF Signal Chain
    • A/D Converter and Digital Correlator
    • Receiver Noise Temperature
    • Internal Calibration
    • Radio Interference Filter
  • Ground Station and User Interface
    • Ground Station
    • Labels and Tags
    • Status
    • Settings
    • Rawdata
    • Map
    • Internal
  • Online Processing
    • Introduction
    • Sanity Check and Filtering
    • Gain Calibration
    • Conversion to Volumetric Water Content
    • Data Storage in Google Drive
  • Working with the Sensor and Data
    • HDF5 File Structure
    • Python Scripts
    • Test Observations
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  1. Ground Station and User Interface

Rawdata

Display of raw data spectra.

PreviousSettingsNextMap

Last updated 1 year ago

A sensor can be selected from the drop-down menu labelled "Sensor Selection." The graph displays the HH and VV correlator products for both the calibration load (blue and red lines) and the soil signal (green and purple lines). There are some criteria that can be used to evaluate the quality of the data:

  • For HH and VV, respectively, the "data" lines (green and purple) should be below the "cal" lines (red and blue).

  • Fewer spikes in the data spectra indicate better quality. Interference causes spikes, which means the soil and cal signals should be smooth.

  • The signal levels should be approximately between 3000 to 4000 counts.

  • The blue and red lines should be similar in shape and within 500-1000 counts. If the levels differ by more than that, the gains of the VGA (variable gain amplifiers) might require adjustment.

Rawdata tab of the user interface.