Accession Number:

ADA067179

Title:

Geodetic Applications of Inertial Navigational Systems.

Descriptive Note:

Final rept.,

Corporate Author:

FAF UNIV AT MUNICH (GERMANY F R) INST OF ASTRONOMICAL AND PHYSICAL GEODESY

Personal Author(s):

• Grafarend,Erik W.

Report Date:

1979-03-01

Pagination or Media Count:

244.0

Abstract:

A gradiometer-aided inertial navigation system is theoretically and statistically analysed to estimate its abilities to monitore geocentric cartesian coordinates. Having discussed the inertial instrumental units used on the moving platform and several reference coordinate frames applicable in all navigation systems, studies on the severe problem of the separability of the gravity gradients from the inertial disturbances are carried out. Simulation I presents how well the aided navigation system can produce inertial coordinates and how the newcomers of the inertial instrumentation, the gradiometers, perform on-board the moving vehicle. Quantization error studies are also analysed and presented for such a system. Simulation II includes besides the detailed analysis of the accelerometer and gradiometer error models used, the abilities of the system to estimate geocentric coordinates. Multipoint statistical analysis for the approximated inertial acceleration components shows that the navigation system under consideration behaves better as closer the reality is approached. Author

Descriptors:

• *INERTIAL NAVIGATION
• ACCELEROMETERS
• ERRORS
• STATISTICAL ANALYSIS
• GEODESY
• GYROSCOPES
• NAVIGATIONAL AIDS
• GRADIOMETERS
• CARTESIAN COORDINATES

Subject Categories:

• Geodesy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE