| 摘要 |
The invention is a method and apparatus for generating navigation data. The method comprises the steps of (a) determining the position vector for one or more observation points in an earth-fixed reference frame and (b) determining either (1) the position vector for a target point in the earth-fixed reference frame from direction in either a model-based or gravity-based reference frame from the one or more observation points to the target point or (2) the directions in either a model-based or a gravity-based reference frame from the one or more observation points to the target point from the position vector for the target point in the earth-fixed reference frames, the model-based reference frame having a vertical axis with a specified orientation with respect to a normal ellipsoidal model of the earth and having horizontal axes with specified orientations with respect to the earth-fixed reference, the gravity-based reference frame having a vertical axis with a specified orientation with respect to the gravity vector and having horizontal axes with specified orientations with respect to the earth-fixed reference frame. The apparatus (1) for practicing the method for generating navigation data comprises an inertial navigation system (5), a GPS antenna and receiver (3), a direction finder (9) and an orientation controller (7).
|
