Location determination techniques

Details Location determination techniques Location determination techniques

2011-03-08

2011-03-08

Bost, Dwayne D (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S403000

Reexamination Certificate

active

07904097

ABSTRACT:
A method for estimating a target object properties, including location, in an environment. A topology model indicates permissible locations and transitions and a data model models a location-dependent physical quantity which is observed by the target object's sensing device. Motion models model specific target object types, obeying the permissible locations and transitions. The target object is assigned a set of particles, each having a set of attributes, including location in relation to the topology model. The attributes estimate the target object properties The particles' update cycles include: determining a degree of belief for each particle to estimate the target object properties; determining a weight for each particle based on at least the determined degree of belief and generating new particles for update cycle n+1 in an evolutionary process.

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