Difference between revisions of "Interferometry in ISCE using Sentinel 1 Imagery"
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The Interferometric synthetic aperture radar Scientific Computing Environment ([https://github.com/isce-framework/isce2 ISCE]). |
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Note that this tutorial is only compatible with Linux and MacOS. ISCE is not currently supported on a Windows environment. |
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ISCE does not offer a [[https://en.wikipedia.org/wiki/Graphical_user_interface|Graphical User Interface]] (GUI), which may be intimidating for some users. Although it is not necessary, some experience with the following tasks is recommended: |
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# Using the Command Line (Terminal) |
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# Setting up a Conda environment |
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# Writing and executing scripts in Python |
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A Conda environment will be used to manage software dependencies so the user must only be concerned with having Anaconda installed on their computer. Click [https://docs.anaconda.com/anaconda/install/ here] for instructions on installing Anaconda. Once Anaconda is installed, open a new terminal and enter the command: |
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<br><code>conda init</code><br> |
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this sets up a base Anaconda environment that will allow you to access certain commands and libraries directly from the command line. |
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Download the Conda environment: |
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ISCE-2 has a number of dependencies and highly is susceptible to versioning conflicts. By using a virtual environment, the packages (and their versions) will be uploaded to a separate space on your computer rather than in the root files. Download the YAML file below and save it in a location you can easily access from the command line: |
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FILE HERE |
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Run the following code to set up the Conda environment: |
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::<code>conda env create -f /path/to/environment.yml</code><br> |
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Shortly after running the command, you should see packages beginning to be installed one by one. |
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[[File:01-createEnvironment.jpg|frameless|center]] |
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This step may take a while to complete. While waiting, here is something interesting to look at... |
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something interesting here |
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Once the installation is complete, the environment must be activated. |
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<br>[[File:02-createEnvironment.jpg|frameless]]<br> |
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After sending the following command |
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::<code>conda activate ISCE-2</code><br> |
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you can observe that the <ISCE-2> environment is prepended to your working directory path. |
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[[File:03-activateEnvironment.jpg|frameless|center]] |
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Creating the ISCE-2 Conda environment has already taken care of its installation as well as setting some global variables. To confirm ISCE-2 has been successfully installed, use this echo command: |
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<br><code>echo $ISCE_HOME</code><br> |
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This should output the path to the folder where isce-2 has been installed |
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[[File:04-homeVariable.jpg|frameless|center]] |
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Finally, to test the installation, run the following command: |
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<code>python... |
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Download the Data |
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Sentinel-1 imagery is freely available... |
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