The station which is selected close to the main triangulation station to avoid intervening obstruction is known as?

UPPSC State Eng. A.E. 2004 (II), UPPSC Civil Eng. A.E. 2013 (II)

⭕ (a) Satellite station

⭕ (b) False station

⭕ (c) Supplementary station

⭕ (d) Pivot station

📚 Explanation:

When a main triangulation station cannot be used directly due to an intervening obstruction, a nearby station called a Satellite station is selected.

• It is very close to the main station
• Used to avoid physical obstructions
• Helps maintain accurate triangulation

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👉 Hence, the correct answer is: (a) Satellite station

Extra Information

In geodetic surveying, sometimes the direct line of sight between two main triangulation stations is blocked by an obstruction such as a building or hill. In such cases, an alternative station is selected close to the main station to bypass the obstruction and maintain accuracy. This station is known as a pivot station.

Key Concepts:

• Used when direct line between triangulation stations is blocked
• Placed close to the main station
• Does not affect the geometry of triangulation