| 摘要 |
The new invention is a method for a self-contained multifunctional navigation device. It computes 3D-spatial velocity of the vehicle and of fluid medium surrounding the vehicle, using a movement sensor system comprising low power Transmitter and plurality of Receivers placed close to the Transmitter. The said computation measures propagation time delay of low frequency pulse envelope modulating carrier EM (radio) waves using Time to Digital Converter (TDC). Orientation, direction, position and movement data are derived using well known mathematical formulae. Derived movement data are displayed graphically on Visual Display Screen. A commercial computer comprising real time operating system, stored digitalized Navigation data and digitalized map facilitates data computation and control and guidance. The method and movement sensor device can be used in any type of vehicle (airborne, surface, sub-surface, marine, sub-marine or space) as a means for navigation and control guidance aid. |
