Therefore, they have also an periodical effect on user navigation and positioning accuracy.

Computer simulation results show that navigation accuracy is improved greatly,and the robust of system shows goodness.

Based on the above, It also makes analysis and comparison on the system error, which draws to the conclusion that: the effect on the navigation accuracy caused by the gyrodrift of inertial navigation system of azimuthal rotation is 2~0(00) lower than that o.

Compared with these two revising methods, the composed revising method improves the integration system navigation accuracy.

Study of navigation positioning in mountains and jungles by using GPS/INS composite technique;

Determining Coordinate Transform Parameter in GPS Navigation Positioning Surveying;

Error correction coding study for vehicle navigation and positioning data transmission

With the exploration of gas hydrate in China going forward to the phase when field test drilling is carried out,the accuracy of navigation and positioning has to be improved to identify gas hydrate more accurately and describe its outer conformation and distribution characteristics more precisely so as to determine where gas hydrate exactly exists.

In this paper, a kind of vehicle-used GPS/ DR system of combining navigation and position is discussed.

The paper analyzes the technologies involved in the materials on Transportation,such as navigation and position,RFID, data telecommunication and GIS,etc.

So that GPS cannot serve as the sole source for ship抯 positioning and navigation.

It is the advancedest positioning and navigation system.

Objective: To approach the feasibility of the three-dimensional positioning and navigation with regular catheter electrodes in intracavitary with a low-frequency electrical field.