Implementation of a Differential Geometric Filter for Spacecraft Formation Orbit Estimation
The differential geometric filter is implemented to estimate the absolute and relative positions of the spacecraft in a formation. The extended Kalman Filter is also implemented as a benchmark for the differential geometric estimation. Only relative positions between the spacecraft are measured. Rel...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/910496 |
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| Summary: | The differential geometric filter is implemented to estimate the absolute and
relative positions of the spacecraft in a formation. The extended Kalman Filter is
also implemented as a benchmark for the differential geometric estimation. Only
relative positions between the spacecraft are measured. Relative positions are measured
using a wireless local positioning system (WLPS) installed in all spacecraft.
Two different scenarios are studied: (1) the observations include WLPS measurements
only and (2) the observations include WLPS measurements in addition to
measurements for the absolute position of one spacecraft made by a radar that
takes measurements from the earth’s surface. Results show that the differential
geometric estimation has better stability performance and a faster convergence
rate compared to the extended Kalman filter. |
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| ISSN: | 1687-5966 1687-5974 |