Software spd_client provides a library and several executables for 
implementing interface to slant path delay, atmosphere opacity and 
antenna temperature on client side and a client routines for 
computing path delay path for satellite or air-borne altimetry by
interacting with the SPD server.

Public functions:

1) Two public routines that are required for computing path delay
   using the time series of slant path delay expanded 
   over azimuth and elevation for a set of stations:

   SPD_LOAD_BSPD   -- load the data from a directory with expansion 
                      coefficients in bspd format
   SPD_INTRP_DELAY -- compute path delay by interpolation


   Executable spd_3d_toser transforms the expansion coefficients
   from ascii SPD format to binary BSPD format.

  three example programs are provided:

spd_del_example_fortran -- a simple example for computing path delay 
                           at a given epoch.

spd_show -- a more complicated example of computing path delay at 
            a given epoch.

sob_show -- example of computing opacity and atmosphere brightness
            temperature at a given epoch.

Detailed documentation is provided in document doc/spd_client_path_delay.txt


2) Three public routines that are required for computing path 
   delay for altimetry:

   spd_cli_init     -- parsing control file, initialization, and 
                       checking whether the SPD server is running.
   
   spd_cli_get_2pd  -- sending request to compute path delay to
                       the SPD server, waiting for the response,
                       parsing the results.

   spd_cli_quit     -- deallocation of dynamic memory.

   These three routines can be called from Fortran, C, or MATLAB.

   Three examples are provided:

   spd_cli_example_fortran.f
   spd_cli_example_c.c
   spd_cli_example_fortran.f
  
3) Three public routines that are required for computing atmospheric
   opacity and brininess temperature

   spd_res_intrp     --

   get_spd_res       --

   get_spd_res_azel  --

4) Include files:
  
   spd.i
   spd_local.i
   spc.h


Last update: 2026.01.11_17:41:17