ROI_PAC processing for Modern Geodetic Methods (Page 3 of 6)

Table of Contents

Data Source:

We have downloaded the data from the UNAVCO/WInSAR Consortium archive for a pair of repeat orbit images surrounding the October 16, 1999 Hector Mine Earthquake in Southern California.


• The satellite inforamtion of interest for this event is:

   
             track = 127
             frame = 2907
             sat   = E2   #(ERS2)
             orbit = 23027  # or 23528  
  

  • Track numbers correspond to number of the "along-track" path that the satellite is traveling (for ERS satellites this varies mostly from East-West).
  • Frame numbers correspond to individual slices "along-track" and vary from N-S for descending and S-N for ascending orbits.
  • For repeat passes the Track and Frame numbers remain constant for the same satellite, while the orbit number will continue to increase.
  
  

    % mkdir -p  ~/MGM/HectorMine/990915  # The YY MM DD of scene
    % mkdir -p  ~/MGM/HectorMine/991020 

• Because the password is protected, we will supply you with the already downloaded data. Please do not ask me for the password! I cannot give it to you.
• For class, we will create links for the zip directories, since they are ~170M each.

    % cd  ~/MGM/HectorMine/990915
    % ln -s ~anewman/MGM/HectorMine/ZIP/ERS2_127_2907_23027.zip
    
    % cd  ../991020
    % ln -s ~anewman/MGM/HectorMine/ZIP/ERS2_127_2907_23528.zip
  

• If you had the password you could get the data. If you are working on a remote terminal, it may be a much better idea to download the data remotely using ftp from the command line.

    % cd  ~/MGM/HectorMine/T127_2907/E2_23027
    # The below will prompt you for the WInSAR password at UCSD (WE WON'T DO THIS IN CLASS) 
    %         ftp ftp://ers@winsar.ucsd.edu/T127/2907/e2_23027_2907.raw.gz  
    %         ftp ftp://ers@winsar.ucsd.edu/T127/2907/e2_23027_2907.ldr
    %         ftp ftp://ers@winsar.ucsd.edu/T127/2907/e2_23027_2907.vdf
    # or 
    %         wget  http://winsar.stanford.edu/data/ERS2/127/2907/ERS2_127_2907_23027.zip
  
    % cd  ../E2_23528
    # The below will prompt you for the WInSAR password at UCSD (WE WON'T DO THIS IN CLASS) 
    %         ftp ftp://ers@winsar.ucsd.edu/T127/2907/e2_23528_2907.raw.gz  
    %         ftp ftp://ers@winsar.ucsd.edu/T127/2907/e2_23528_2907.ldr
    %         ftp ftp://ers@winsar.ucsd.edu/T127/2907/e2_23528_2907.vdf
    # or 
    %         wget  http://winsar.stanford.edu/data/ERS2/127/2907/ERS2_127_2907_23528.zip
    # instead we will link the files from my directory