In the IPTA point lists contain the coordinates (range and azimuth pixel number relative to the reference SLC geometry) of the selected points. Data at these points (SLC values, interferogram values, ...) are stored in point data stacks with each record corresponding to a different SLC or interferogram. The point data stack of mask values contains for each point a flag (0 or 1) which indicates if the data of a point are considered (1) or not considered (0).
pSLC is a point data stack of complex SLC values. The format of pSLC corresponds to a point data stack (with multiple records) of fcomplex (pairs of float) or scomplex (pairs of short integer). For each point the record contains a complex SLC value.
The number of records corresponds to the number of registered SLC used. In general this number and the order of the records is different from the number and order of interferograms calculated.
Geometric information for an SLC is available in the SLC parameter file. For a point data stack of SLC (pSLC) the SLC parameter files of all SLC are organized in a stack of SLC parameters with each record containing the SLC parameter file of the corresponding record of the pSLC.
The size of a pSLC of fcomplex type is (number of SLC)*(number of points in the list)*8 bytes. The size of a pSLC of scomplex type is (number of SLC)*(number of points in the list)*4 bytes.
© Copyrights for Documentation, Users Guide and Reference Manual by Gamma Remote Sensing, 2003.
UW, CW, TS, last change 20-Feb-2003.