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Figure 5
Determination of the projection centre PC O using the intersection of four known zone axes (Killian, 1955a ,b ). The unknown angles φ and ψ and the length r = |R| can be derived from a1, a2, b1, b2, b2, α1, α2, β1 and β2. |
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Figure 5
Determination of the projection centre PC O using the intersection of four known zone axes (Killian, 1955a ,b ). The unknown angles φ and ψ and the length r = |R| can be derived from a1, a2, b1, b2, b2, α1, α2, β1 and β2. |