SARPROZ3-7 September 2012 SARPROZ (c) tutorial, Daniele Perissin 4/150 To get some Help messages,...
Transcript of SARPROZ3-7 September 2012 SARPROZ (c) tutorial, Daniele Perissin 4/150 To get some Help messages,...
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http://ihome.cuhk.edu.hk/~b122066/index_files/download.htm
Tutorial on SAR, Tutorial on SAR, InSARInSAR, , PSInSARPSInSAR
SARPROZSARPROZ
The SAR processing tool by The SAR processing tool by PeriZPeriZ
PetronasPetronas University of Technology UTPUniversity of Technology UTP
Part IPart I
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Run the executable file by double-clicking on it
Windows explorer
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Proxy settings
Fill in the user/classroom settings
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To get some Help messages, check “Help Mode” and press the button you want to receive help about
SARPROZ main window
Help for “Dataset Statistics”
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Keep the command prompt visible for messages
Load data with “Select Dataset”
SARPROZ main window
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Dataset Selection
Pick up the directory “TSX_HK” via “Select” button in “Site Directory”
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SLC data import
1. Uncheck “Untar” and “Del Tar” options
2. Press “Get Contents” button to get the directory contents
3. Press “Set Orbits” to read all the data in the directory
4. Press “View footprints” to see the footprints in Google Earth
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Footprints in Google Earth
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Choose the Area to process
1. Set the area center (lat and lon in decimal degrees)
2. Set the area size (samples and lines in pixels)
3. Press the “View” button to see the area in GE
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Selected Area
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Extract and co-register the data
1. Press the “Data Extraction”button
2. When the previous step is successfully terminated, Press the “Co-registration”button
3. Check the result with “View Images”
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Co-registered images visualization
Press “Go” to view the next image or “Stop” to exit
When ready, press “OK” in “SLC Data
Processing” window to close it
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Dataset Selection
Use the button “Get Weather Data” to retrieve weather info from the web
After data have been imported and co-registered, info like Samples, Lines, Sensor are displayed in “Dataset Selection”
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When ready, press “OK”to close the “Dataset Selection” window Completed operations and messages are
displayed in the command prompt
Dataset Selection
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Display the dataset parameters via button “Dataset Statistics”
SARPROZ main window
Processing modules are accessed through “Site Processing”
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Dataset Parameters
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Generating the Reflectivity mapGenerating the Reflectivity map
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Site Processing
Press this button to generate the reflectivity map
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The tool asks for a confirm (to avoid possible mistakes)
Security prompt
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When a task is completed, the corresponding button becomes green
Site Processing
To check the result, press “View Parameters” in “Visualization Tools”
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View Parameters
Select “Reflectivity Map” from the menu
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View Parameters
Press the button “Plot”
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Site Processing
Check this box to avoid security prompt
Press this button to generate the mask for sparse points selection
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The external DEMThe external DEM
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Site Processing
SRTM DEM is the default option, and automatically downloaded
Press this button to visualize the DEM
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DEM visualization
The processed area is identified by 4 back crosses
Tools for navigating/manipulating the image
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Site Processing
Use this button to select an other DEM source
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External DEM selection
Select a file containing the DEM data
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External DEM selection
Import a parameter file for reading the DEM data
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External DEM selection
Alternatively, fill in manually the DEM parameters
When completed, press the “OK” button
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DEM visualization
The newly imported DEM has a better resolution than SRTM
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Preliminary Preliminary geocodinggeocoding
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Site Processing
Click this button to have a first evaluation of the quality of geocoding
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Geocoding through a GCP
No GCP has been inserted yet
Use this button to display the Reflectivity map in Google Earth
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The Reflectivity Map in GE
If you browse the result, you can notice a low quality geocoding
Transparency
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Site Processing
Use this button to geocode by means of the external DEM
When the processing is concluded, click again the manual GCP selection
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Geocoding through a GCP
After the automatic geocoding, a GCP is shown here
We can display again the reflectivity map in GE, but we need to check “OVR”
to overwrite the previous result
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The Reflectivity Map in GE
The geocoding is slightly different, but still not very precise. Why?
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Site Processing
We need to project the DEM data into the SAR coordinates
When the processing is completed we can check the results with “View
Parameters”