Chaining on a Spherical ERS with a Topographic Surface Added
Represents a surveyor’s target (pole).
- Chaining is depicted in the AB plane view
- The transit provides elevation angles
- The distances aiai+1 are computed by spherical trigonometry and summed to yield AB
- Angular measurements are not affected
- Intervisibility is required
- Gravity and thermal models could be added (to affect chain length)