sarproz-group

Unwrapping method

This topic contains 4 replies, has 3 voices, and was last updated by  periz 2 months, 3 weeks ago.

  • Author
    Posts
  • #4145

    bridgetwang
    Participant

    Hi,
    I’d like to ask one question about unwrapping method, as it seems there’s no detailed description in the manual.

    What the 3 kinds of unwrapping method “standard”,”standard LS” and “standard LS LP” mean?

    And how could I choose from them? do they have different cases in which behaves best?

    Best regards,
    Zoe

  • #4147

    periz
    Keymaster

    * standard: usual standard unwrapping method, pixel by pixel, it suffers the usual drawbacks of unwrapping in presence of noise. If you mask an interferogram and you have disconnected areas, it’s not going to connect them.
    * sparse LS: it uses sparse points and Least Squares to connect unconnected areas and to solve the problem in presence of noise. It’s by construction smooth, good if you have no alternatives to return a smooth result
    * other options: prototypes and experiments, don’t us them…
    best

  • #4149

    bridgetwang
    Participant

    Thank you for your rapid answer!

  • #4237

    sahar
    Participant

    Hello
    I’d like to ask one question about phase ambiguity parameter, How the phase ambiguity parameter is calculated in the network?

  • #4238

    periz
    Keymaster

    I do not know what you mean with “phase ambiguity parameter”.
    The phase ambiguity is pi=3.1416… radians
    If you convert the phase to height or displacement, you will get the corresponding values. Check any insar paper for the formulas.

You must be logged in to reply to this topic.