Civil Engineering Mcqs

Due to scan geometry of a satellite sensor____________________?
  • (A)  The off-nadir resolution is degraded
  • (B)  The ground distance swept by the senor, IFOV is proportional to sec2 of scan measured from the nadir
  • (C)  The details towards the edge of the scan get compressed
  • (D)  All of these
Which one of the following parameters is accurate for DGPS ?
  • (A)  Positional accuracies ~ 1 – 2 m if rover is less than 1-2 km from the reference station
  • (B)  Positional accuracies ~ 2 – 5m if rover is less than 2-5 fm from the reference station
  • (C)  Positional accuracies ~ 5 – 10 m if rover is less than 5-10 km from reference station
  • (D)  Positional accuracies ~ 5 – 10 m if rover is less than 25 km