| Octet No. | Contents |
|---|---|
| 15-18 |
J ― pentagonal resolution parameter |
| 19-22 | K ― pentagonal resolution parameter |
| 23-26 | M ― pentagonal resolution parameter |
| 27 |
Representation type indicating
the method used to define the norm (see Code Table 3.6) |
| 28 |
Representation mode indicating
the order of the coefficients (see Code
Table 3.7) |
| 29-32 |
Latitude of the southern pole of projection |
| 33-36 | Longitude of the southern pole of projection |
| 37-40 |
Angle of rotation of projection |
| Notes: (1) The pentagonal representation of resolution is general. Some common truncations are special cases of the pentagonal one: Triangular: M = J = K Rhomboidal: K = J + M Trapezoidal: K = J, K > M (2) Three parameters define a general latitude/longitude coordinate system, formed by a general rotation of the sphere. One choice for these parameters is: (a) The geographic latitude in degrees of the southern pole of the coordinate system,06 for example. (b) The geographic longitude in degrees of the southern pole of the coordinate system,λp for example. (c) The angle of rotation in degrees about the new polar axis (measured clockwise when looking from the southern to the northern pole) of the coordinate system, assuming the new axis to have been obtained by first rotating the sphere through λpdegrees about the geographic polar axis and then rotating through (90 + 0p) degrees so that the southern pole moved along the (previously rotated) Greenwich meridian. |