stamps step 3, there was 0 PS selected

[陈宇]

Dear everyone,

I use cosmo skeymed data for small baseline. there was 0 PS selected in whole image when i run stamps(3,3). the messages are below. I tried to raise the density_rand to 5, 10, and 20. but same problem happened. 

could anyone tell me what's the problem?

GETPARM: slc_osf=1 

GETPARM: clap_alpha=1 

GETPARM: clap_beta=0.3 

GETPARM: clap_win=32 

GETPARM: select_method='DENSITY'

GETPARM: density_rand=2 

GETPARM: gamma_stdev_reject=0 

GETPARM: small_baseline_flag='y'

GETPARM: drop_ifg_index= 

PS_SELECT: Initial gamma threshold: 1.000 at D_A=0.02 to 1.000 at D_A=0.60

PS_SELECT: 0 PS selected initially

PS_SELECT: Reestimation gamma threshold: 1.000 at D_A=0.02 to 1.000 at D_A=0.60

PS_SELECT: 0 ps selected after re-estimation of coherence

PS_SELECT: Finished

Thank you very much

all the best

Yu CHEN

[陈宇]

Hi everyone, Hi Hopper,

I checked the ps_select.m. I noticed that the raison causing this problem is the "ok_ix" is empty, which means the "percent_rand" values are all bigger than "max_percent_rand" value.  one thing not normal is that the "percent_rand" values are too big like hundreds , thousands, which make it impossible to get through this no matter what "max_percent_rand" value we set.  

this"percent_rand" values are depending on the "Nr". does anyone know what kinds of Nr is correct and what is not?

what is the source of this problem?

thank you

Yu

[zhiliang zhang]

Dear Yu

         When I used stamps(3,3) to process, I met a problem that 0 ps selected  initial. I noticed that you have the same problem with me and could you tell me how to solve it?

         Thank you very much!

Elton

在 2014年9月9日星期二 UTC+8下午8:58:53，陈宇写道：

[yang Li]

Have you guys solved this problem?

[zhiliang zhang]

Dear Yang

         I have not solve it successfully！ And have you solve this problem？ When I used stamps(3,3) to process, I met a problem that 0 ps selected  initial. I noticed that you have the same problem with me and could you tell me how to solve it?

         Thank you very much!

Elton

在 2019年8月26日星期一 UTC+8下午4:46:51，yang Li写道：

[sun]

 When I used stamps(3,3) to process, I met a problem that 0 ps selected  initial.

I would like to ask if it has been solved or do you have another solution? Thank you.