Re: DEM extraction from TANDEM -TerraSAR data pair(urgent)

[Batuhan Osmanoglu]

Hello Mohammad, 

You can generate DEMs from TDX pairs. Essentially that is the point of launching a second satellite. 

After you launch adore, run "settings init" or "scenes init" to add the TDX scenes to your project. Then it should be as simple as running through the steps. Make sure you have "bistatic=on". 

Best, 

batu

--

Batuhan Osmanoglu, Ph.D.
Partner

BOS Technologies, LLC

http://bostechnologies.com

On Tue, Mar 10, 2015 at 9:41 PM, Mohammad Mohseni Aref <mohsen...@gmail.com> wrote:

Dear Batu,

I hope you are well and everything goes well.

I have attached .xml file of two pairs which I am trying to extract DEM using them.please look these file.

Based on what I have seen in these files,They are in bistatic Mode.Hence I have to process them in different way.I have used doris4.06. and It seems it can read parameter of TDM and TSX but I can't see magnitude in .ras file(m-read&crop step) . it is totally blank.It seems first of all I have to convert 16 bit to 64 and I should use your modified code *cr2_to_cr4.py to process them.I have installed adore as well.could you please give me setting sample for TDX-TSX pair DEM extraction in ADORE.Could you please guide me how to process them.when I am trying to use ADORE-GUI(AGOOEY) and setting load command,I can see just similar adore interactive mode(-i) and I can't see visualization mode similar your presentation in AGU.What's your suggestion?

all the best,

Mohammad

PS:please see attached the XML file TSX-TDM 

1-I have installed ADORE based on Manual Installation of Latest Development Version, and I have installed all dependencies

2-It seems it was impossible to do DEM extraction from bistatic pair  in 2012 based on Eric Fielding comment in Linkdin

https://www.linkedin.com/groups/Is-any-one-familiar-DEM-3823791.S.122035668

Hello Mohammad, 

The changes I made are already publicly available in the ADORE repository. 

For TSX I did not change anything in Doris (that I remember) it should work as is. There is some residual orbit but you can remove that by using deramp or estorbits etc. 

For TDX-TSX interferogram, I made some changes to subtrrefpha, and subtrrefdem. There is a factor of two that needs to be changed. See the scripts ending in _bistatic.py here:

https://code.google.com/p/adore-doris/source/browse/#svn%2Ftrunk%2Flib%2Fpython%2Ffun

These scripts are activated in ADORE by setting "bistatic=on"

Oh also, if you are using TDX pairs you need to convert 2byte-float into 4-byte float for doris. This is done with *cr2_to_cr4.py scripts. 

best, 

batu. 

--

Batuhan Osmanoglu, Ph.D.
Partner

BOS Technologies, LLC

http://bostechnologies.com