How can I insert log ratio formula for satellite derived bathymetry process in the ENVI software?
To insert the log ratio formula for satellite-derived bathymetry process in ENVI software, you can follow these steps:
Open the ENVI software and load the satellite imagery you wish to process.
Navigate to the "ENVI Toolbox" and select the "Raster Tools" option.
From the "Raster Tools" menu, select "Band Math".
In the "Band Math" dialog box, select the bands that contain the data you want to use for your log ratio formula.
In the "Expression" field, enter the formula for the log ratio calculation. For example, if you are using bands 3 and 4, the formula would be: "Ln(Band3/Band4)".
Click on the "Apply" button to apply the formula to the selected bands.
The output of the calculation will be a new band containing the log ratio data. You can then save the output band as a new raster file.
Note: Make sure that the bands you are using for the calculation have been pre-processed to remove any atmospheric or environmental interference. Additionally, be aware that the accuracy of satellite-derived bathymetry is affected by factors such as water depth, water clarity, and seafloor topography.
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