METHOD FOR POSITION ESTIMATION USING GENERALIZED ERROR DISTRIBUTIONS
摘要
<p>A method for improving the results of radio location systems that incorporate weighted least squares optimization generalizes the weighted least squares method by using maximum a posteriori (MAP) probability metrics to incorporate characteristics of the specific positioning problem (e.g., UTDOA). Weighted least squares methods are typically used by TDOA and related location systems including TDOA/ AOA and TDOA/GPS hybrid systems. The incorporated characteristics include empirical information about TDOA errors and the probability distribution of the mobile position relative to other network elements. A technique is provided for modeling the TDOA error distribution and the a priori mobile position. A method for computing a MAP decision metric is provided using the new probability distribution models. Testing with field data shows that this method yields significant improvement over existing weighted least squares methods.</p>
申请公布号
WO2010077819(A1)
申请公布日期
2010.07.08
申请号
WO2009US67886
申请日期
2009.12.14
申请人
TRUEPOSITION INC.;BOYER, PETE, A.;MIA, RASHIDUS, S.;SEGALL, EDWARD, JOSEPH
发明人
BOYER, PETE, A.;MIA, RASHIDUS, S.;SEGALL, EDWARD, JOSEPH