发明名称 |
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 |
EP2384549(A4) |
申请公布日期 |
2016.01.06 |
申请号 |
EP20090836808 |
申请日期 |
2009.12.14 |
申请人 |
TRUEPOSITION, INC. |
发明人 |
BOYER, PETE, A.;MIA, RASHIDUS, S.;SEGALL, EDWARD, JOSEPH |
分类号 |
G01S5/02;G01S5/06;G01S5/08;G01S5/10 |
主分类号 |
G01S5/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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