id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
349	Need to regress residuals on orbit positions	Ian Culverwell	Ian Culverwell	"Stig Syndergaard (DMI) discovered that the problematic difference between ifort/linux and xlf95/HPC when processing RS data with ropp_pp_occ_tool could be explained by the different accuracies in the orbit fitting routine ropp_pp_regression on the two platforms.  See #301 for details.  The solution is to carry out a further fit to the residuals (data-fit) of the first fit.  The results are then much more similar.  

Stig has written a routine ropp_pp_residual_regression (attached in ropp_pp_utils.f90), which should be called every time (=4 I think, but needs checking) that ropp_pp_regression is called to fit satellite orbit co-ordinates. "	defect	closed	normal	8.0	ROPP (all)	7.0	fixed