Least-squares multi-spacecraft gradient calculation with automatic error estimation
| dc.contributor.author | De Keyser, J. | |
| dc.date | 2008 | |
| dc.date.accessioned | 2016-09-21T11:04:57Z | |
| dc.date.available | 2016-09-21T11:04:57Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/4325 | |
| dc.description | Multi-spacecraft missions allow the gradient of important physical quantities in the terrestrial environment to be determined. The gradient can be computed from four simultaneous measurements in a straightforward way, but this computation does not produce proper error estimates, making it hard to assess the meaningfulness of the result. Recently developed least-squares gradient computation techniques offer the possibility to obtain more precise results with all-inclusive error estimates, provided that information about the non-linearity of the space and time variations of the observed quantity is given. The present paper describes several heuristics for estimating these variations, thereby enabling a fully automatic computation of the gradient and the associated error estimates. The performance of these heuristics is illustrated with synthetic data corresponding to 4- and 10-spacecraft configurations. | |
| dc.language | eng | |
| dc.title | Least-squares multi-spacecraft gradient calculation with automatic error estimation | |
| dc.type | Article | |
| dc.subject.frascati | Physical sciences | |
| dc.audience | Scientific | |
| dc.subject.free | environmental gradient | |
| dc.subject.free | error analysis | |
| dc.subject.free | gradient analysis | |
| dc.subject.free | heuristics | |
| dc.subject.free | least squares method | |
| dc.subject.free | spacecraft | |
| dc.subject.free | spatial variation | |
| dc.subject.free | temporal variation | |
| dc.subject.free | terrestrial environment | |
| dc.source.title | Annales Geophysicae | |
| dc.source.volume | 26 | |
| dc.source.issue | 11 | |
| dc.source.page | 3295-3316 | |
| Orfeo.peerreviewed | Yes | |
| dc.identifier.doi | 10.5194/angeo-26-3295-2008 | |
| dc.identifier.scopus | 2-s2.0-54849416433 |
