Sahar Dehnavi

9 Questions 18 Answers 0 Followers

Questions related from Sahar Dehnavi

How can I convert Solar Zenith angle to UTC time?

Hey all, There are lots of availabe routines in which we can use UTC time as input to estimate the solar Geometry including Solar Zenith and Azimuth angles. BUT I would like to do the conversion...

30 October 2018 552 3 View

How much is the precision of Heliosat model for solar radiation estimation?

Dear all, I would like to estimate solar radiation using satellite images. Therefore I would like to make sure how much precise is the output of Heliosat model (may be its different versions)? I...

05 June 2018 2,169 5 View

What is the common projection for collection of GCPs in MODIS data?

Hi all, I am working with some MODIS images. As I see the projection of these image data are based on Sinusoidal projection. When I would like to define some Ground Control Points (GCPs) on this...

03 April 2018 8,534 3 View

Can I work with local Cartesian coordinates in Geomatica, ERDAS or ENVI?

Dear all, I would like to process my image data in local Cartesian coordinate instead of geographic Lat/Lon in order to make it possible to ignore the Earth curvature in the computation steps....

26 February 2018 1,669 5 View

How can I extract epipolar images in the ENVI DEM extraction wizard?

Hello all, I would like to create epipolar images from two stereo pairs, but it is not possible for me to load epipolar images in the step number 6 of the extraction wizard. I would be grateful...

17 February 2018 9,162 3 View

Solve a problem in Step 8 of ENVI DEM extraction Wizard?

Hello all, I have a problem for going through the final step of the ENVI DEM extraction wizard. The software stops without any specific error and also any output. I would be grateful if anybody...

17 February 2018 6,451 3 View

DEM Extraction Wizard in ENVI- How can I introduce file with RPC information?

Hello all, I am working on two stereo images and would like to extract a DEM from these two images. Hence, I used DEM extraction Wizard approach in ENVI, but I can not go through steps since I...

17 January 2018 2,421 4 View

3D Surfuce extrapolation in Matlab?

Dear all I would like to extrapolate a surface I have provided in Matlab. I tried to use the information in the following link ( with the scatteredInterpolant function ) however it is not...

07 December 2017 8,622 11 View

IDL to matlab conversion?

Hi all, I have downloaded and installed the matlab2IDL from the sourceforge in the below website https://sourceforge.net/projects/idl2matlab/ however, I have a problem that I do not know how can I...

01 September 2017 9,898 4 View