15-02-2018 дата публикации
Номер: US20180047174A1
Принадлежит:
When the position of a target moving in a monitoring region is intermittently detected, the position of the target is predicted in a higher precision. The prediction precision of the position of the target can be improved by calculating an existence probability distribution of the target and by accumulating the data of the intermittent detection by use of the Bayes' theorem. 1. A target monitoring system comprising:a storage unit;a processing unit; anda display unit,wherein the storage unit stores a physical model of a target, a non-physical model of the target, and map data,wherein the physical model shows physical constraints of the target, and the non-physical model shows a behavior pattern of the target,{'sub': D', 'n, 'wherein, when n is an optional natural number equal to or more than 2, the processing unit executes existence probability distribution calculation processing of calculating an existence probability distribution Pof the target at a time tbased on data received from an external sensor,'}{'sub': M', 'n', 'n', 'n−1', 'n−1', 'n, 'wherein the processing unit executes diffusion existence probability distribution calculation processing of calculating a diffusion existence probability distribution P(t) of the target at the time tbased on an integration target distribution P(t) of the target at a time tprevious to the time tand the physical model of the target,'}{'sub': 0', 'n', 'D', 'n, 'wherein the processing unit executes reliability calculation processing of calculating a reliability p(t) of the existence probability distribution P(t) based on at least one of a kind of the external sensor and environment around the external sensor,'}{'sub': n', '0, 'claim-text': {'br': None, 'i': P', 't', 'p', 't', 'P', 't', '−p', 't', 'P', 't, 'sub': n', '0', 'n', 'D', 'n', '0', 'n', 'M', 'n, '()=()×()+(1())×() \u2003\u2003(1),'}, 'wherein the processing unit calculates the integration target distribution P(t) of the target at the time tbased on the following equation ...
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