Furthermore, the embodiments provide {TAIL ~ a method} of reducing the condition of {HEAD ~ the deterministic correlation matrix} used in the least squares method 
Furthermore , the embodiments provide { TAIL ~ a method } of reducing the condition of { HEAD ~ the deterministic correlation matrix } used in the least squares method
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH