Page 75 - 4670
P. 75
was also possible to convert data from the Russian Pulkova, 1932
system to the European Datum, and as a result, the European Datum
includes triangulation as far east as the 84th meridian.
3. The Ordnance Survey of ___ has no point of origin. The data
was derived as a best fit between retriangulation and original values of
11 points of the earlier Principal Triangulation of Great Britain (1783-
1853).
4. ___ has its origin in Tokyo. It is defined in terms of the Bessel
Ellipsoid and oriented by a single astronomic station. Triangulation
ties through Korea connect the Japanese datum with the Manchurian
datum. Unfortunately, Tokyo is situated on a steep slope on the geoid,
and the single-station orientation has resulted in large systematic
geoidal separations as the system is extended from its initial point.
5. ___ is the preferred datum for India and several adjacent
countries in Southeast Asia. It is computed on the Everest Ellipsoid
with its origin at Kalianpur, in central India. It is largely the result of
the untiring work of Sir George Everest (1790-1866), Surveyor
General in India from 1830 to 1843. He is best known by the
mountain named after him, but by far his most important legacy was
the survey of the Indian subcontinent.
Task 2. Put up 5 general and 5 special questions to the text.
75