New question on "Offset Tracking tool"

Microwave Toolbox
1

Started in “Offset Tracking tool” of"DEM Assisted Coregistration", after that
in programm window the background became black, and inscriptions were gone in white command window.

On “Task manager of Windows”, the program works in such mode some hours, it is normal?

1 Like
2

maybe you could provide more information:
What data are you using?
Which machine are you running (especially Processor and RAM)?
Can you post a screenshot of SNAP in this “black” condition?

3

I use two images with an identical track 136, with the purpose to receive the speed of the movement of a glacier:

  1. S1A_IW_GRDH_1SSV_20160805T004806_20160805T004831_012458_01376C_99F7
  2. S1A_IW_GRDH_1SSV_20160829T004807_20160829T004832_012808_01431E_01B3
    after performance of “Apply Orbit File” received two files:
  3. 1A_IW_GRDH_1SSV_20160805T004806_20160805T004831_012458_01376C_99F7_Orb
  4. 1A_IW_GRDH_1SSV_20160829T004807_20160829T004832_012808_01431E_01B3_Orb
    then I open in the SNAP window only images 1 and 2 and I start “DEM Assisted Coregistration”, using SRTM of 3 Sec, it covers my area
    After a while the SNAP window looks so:

    Processor Intel ® of Core ™ 2 CPU 4400 @2.0 GHz, RAM of 4 Gb,
    OS Windows 7 max/64
4

I use two images with an identical track 136, with the purpose to receive the speed of the movement of a glacier:

  1. S1A_IW_GRDH_1SSV_20160805T004806_20160805T004831_012458_01376C_99F7
  2. S1A_IW_GRDH_1SSV_20160829T004807_20160829T004832_012808_01431E_01B3
    after performance of “Apply Orbit File” received two files:
  3. 1A_IW_GRDH_1SSV_20160805T004806_20160805T004831_012458_01376C_99F7_Orb
  4. 1A_IW_GRDH_1SSV_20160829T004807_20160829T004832_012808_01431E_01B3_Orb
    then I open in the SNAP window only images 1 and 2 and I start “DEM Assisted Coregistration”, using SRTM of 3 Sec, it covers my area
    After a while the SNAP window looks so:

    Processor Intel ® of Core ™ 2 CPU 4400 @2.0 GHz, RAM of 4 Gb,
    OS Windows 7 max/64
5

Hi,

Might be the RAM is too small, I think it needs at least 16 GB,

and might be that you could implement the whole process one times by moving from tab to other (graph builder)

6

Hi, concerning RAM I too so think, and by the second part please is more detailed, I not absolutely understand

7

Hi,

Yes, might be I didn’t mention so clear, but I meant instead to apply each command separately you could do it in this way for example , Or to build the graph

8

basically true, but this only applies to SLC data. akrig was working on GRD data where no TOPSAR split/deburst ect. is needed.
Simple cogistration should do it.

9

Yes, that is true, but I meant to try out create similar graph as it it mentioned in IW_SLC, might be could be a solution, and what I already have mentioned is only example,

10

alright, I just wanted to point it out so there are no misunderstandings.

Making an own graph is possible, of course.

11

I used the two images to get the following picture. I have two questions here:
(1) Can the grid in the picture be deleted?
(2) Offset tracking operator mainly calculates the moving speed in which direction? (Azimuth or Range)

image
image716×664 173 KB

12

@SUN-Ravenclawplease Can you help me figure out how to use offset tracking for earthquake to get azimuth and range offset maps in SNAP

image
image1920×1080 329 KB

image
image1920×1080 283 KB

After obtaining the velocity, can I get a map of the displacements in range and azimuth
Please I need urgent help
thank you in advance

13

Perhaps you should plot using QGIS
（1）Export the calculated results from SNAP, and then import them into QGIS.

Import_Data
Import_Data1539×965 188 KB

（2）Select the field name to be expressed, and set the layer symbol, color, direction, etc.
Set_symbols_and_direction (heading)
Set_symbols_and_direction (heading)1920×1038 440 KB

（3）My result is as follows：
result
result1920×1042 432 KB

14

@SUN-Ravenclaw thank you very much for your kindness and reply