NavCom StarUtil-3000 Rev.G - Manual (Page 83)

StarUtil 3000 User Guide – Rev G
4-81
Table 7 : User-Defined Ellipsoid Model (with Sample Values)
Definition User-Defined Values
Semi-major Axis (a) 6378137.0e0
Inverse-flat (a/(a-b) 298.2572221010
Source Datum Reference Year 2000

The ellipsoid model parameters are mandatory in any transformation model.
Example 2: User-Defined Transformation Model (3-parameter model)
Table 8 : 3-Parameter Model Transformation (with Sample Values)
Value Order # Parameter User-Defined Values
1 translation in x (in meters) -0.0761
2 translation in y (in meters) -0.01
3 translation in z (in meters) 0.04
Example 3: User-Defined Transformation Model (7-parameter model)
Table 9 : 7-Parameter Model Transformation (with Sample Values)
Value Order # Parameter User-Defined Values
1 – 3 3-parameter model 3-parameter model translation values
4 rotation in x (in arc-sec) 0.008
5 rotation in y (in arc-sec) 0.009
6 rotation in z (in arc-sec) 0.009
7 Translation Scale (in ppm) 7.935e-03
Example 4: User-Defined Transformation Model (14-parameter model)
Table 10 : 14-Parameter Model Transformation (with Sample Values)
Value Order # Parameter User-Defined Values
1 – 8 7-parameter model 7-parameter model translation values
9 translation rate in x (in
meter/year) 1.1e-02
10 translation rate in y (in
meter/year) -4.5e-03
11 translation rate in z (in
meter/year) -1.74e-02
12 rotation rate in x (in arc-sec /
year) 1.034e-3
13 rotation rate in y (in arc-sec /
year) 0.671e-03
14 rotation rate in z (in arc-sec /
year) 1.039e-03
15 Rotate rate scale (in ppm /
year) -0.538e-03