[Retracted] GPS Receiver Position Estimation and DOP Analysis Using a New Form of the Observation Matrix Approximations

Table 1

Comparison of DOP values.

Type of DOP		Time of observation	Due to classical observation matrix	Due to the proposed observation matrix
GDOP	Maximum	05 : 39 Hrs.	2.281	1.882
	Minimum	15 : 42 Hrs.	1.244	1.146
PDOP	Maximum	05 : 39 Hrs.	1.976	1.882
	Minimum	15 : 42 Hrs.	1.146	1.146
HDOP	Maximum	05 : 39 Hrs.	1.812	1.715
	Minimum	15 : 42 Hrs.	1.054	1.054
VDOP	Maximum	05 : 56 Hrs.	0.797	0.780
	Minimum	00 : 69 Hrs.	0.416	0.416
TDOP	Maximum	05 : 39 Hrs.	1.139	0.032
	Minimum	15 : 42 Hrs.	0.484	0.017