Improvement in the method of data processing

Details Improvement in the method of data processing Improvement in the method of data processing

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cha%26a..30..228w&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 30, Issue 2, p. 228-234.

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

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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