| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1772222 | Chinese Astronomy and Astrophysics | 2006 | 7 Pages |
Abstract
When the errors in the initial orbit are comparatively great, the usual truncated least square L estimation can not effectively delete the outliers in the set of optical observations. This method has been modified in both the threshold and the approximation model: the threshold is now determined by the statistics on the rms, and the linear model of fitting the residuals is replaced with a quadratic model. With these modifications, the results show that when the initial orbit has an error of 10[su−4] (the error in the semi-major axis is about 5%), the proportion of outliers is reduced to below 10% for all the simulated satellite passes.
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Physical Sciences and Engineering
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