The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2009
Filed:
Aug. 18, 2005
Takashi Iwamoto, Tokyo, JP;
Takafumi Nagano, Tokyo, JP;
Takashi Iwamoto, Tokyo, JP;
Takafumi Nagano, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
In the present invention, a conditional probability distribution function of received signal which is conditioned with a received signal amplitude (a), a pseudo range (p) and a navigation bit (b) which are unknown parameters is acquired from a GPS signal sample Son the basis of a condition defined by a working hypothesis set in a working hypothesis setting part WH(i) and then the conditional probability distribution function (P(R|a, p, b)) is marginalized with respect to the pseudo range (p) to acquire a marginal posterior probability distribution function (P(p|R, a)) in a step ST. Finally acquired is a pseudo range dependent function in proportion to the marginal posterior probability distribution function (P(p|R, a)). Then, in a step ST, a value of pseudo range (p) which gives the maximum value of pseudo range dependent function is determined as an estimated pseudo range.