The system, by effectively integrating INS/DGPS, is not only with highpositioningaccuracy and working reliability, but also outputs real time and continuous information.
As for the high precision positioning of underwater targets, the GPS sonobuoy technique has two bottlenecks: high precision system clock synchronization and high accuracy time delay estimation.
GPS is a all - weather, high - accuracy and continuously - positioningsystem. The paper explains briefly its application prospects in engineering measurement and ocean geological measurement.