Why DR navigation is preferred over GPS navigation in performing search operation at sea?

DR navigation is preferred over GPS navigation in performing search operation at sea as DR navigation will minimize pattern distortion relative to the search object since it will automatically account for the currents affecting the search object’s drift during the search. For both vessels and aircraft, if a smoke float or other highly visible, expendable object is available, it should be deployed at datum and the pattern should be performed relative to it. Precise search pattern navigation using high-precision methods such as GPS systems will produce good patterns relative to the ocean bottom, but not relative to the drifting search object. This could allow the search object to drift out of the search area before the search facility arrives in that vicinity

Related Searches:

  1. What is GPS, its errors and details?
  2. Why DR navigation is preferred over GPS navigation in performing search operation at sea?
  3. What is DGPS?
  4. What are features of DGPS (Differential Global Positioning System)?
  5. Why two GPS on ship show slight different positions?
  6. ANAND GAUTAM