Mitsubishi Electric Corporation

Kazuhiro Terao

Masayuki Saito

Masakazu Miya

Seigo Fujita

Yuki Sato

Yoshihiro Shima

Hisao Sone

Tsutomu Nakajima

Ryoichiro Yasumitsu

Natsuki Kondo

A reinforcement information adjustment unit reduces an amount of information in reinforcement information by combining: update cycle adjustment processing to set an update cycle of the reinforcement information to be an integer multiple of a predetermined update cycle; geographic interval error value adjustment processing to reduce the number of geographic interval error values by selecting from among a plurality of the geographic interval error values each of which is an error at every predetermined geographic interval out of a plurality of error values, a geographic interval error value at every geographic interval that is an integer multiple of the predetermined geographic interval; and bit count adjustment processing to reduce a bit count of the error value for each error value. A reinforcement information output unit outputs, to an output destination, reinforcement information after being reduced in the amount of information by the reinforcement information adjustment unit.

Information processing device

Positioning device

An augmentation information adjustment unit () reduces an amount of information in augmentation information by combining: update cycle adjustment processing () to set an update cycle of the augmentation information to be an integer multiple of a predetermined update cycle; geographic interval error value adjustment processing () to reduce the number of geographic interval error values by selecting from among a plurality of the geographic interval error values each of which is an error at every predetermined geographic interval out of a plurality of error values, a geographic interval error value at every geographic interval that is an integer multiple of the predetermined geographic interval; and bit count adjustment processing () to reduce a bit count of the error value for each error value. An augmentation information output unit () outputs, to an output destination, augmentation information after being reduced in the amount of information by the augmentation information adjustment unit ().

Information processing device and positioning device

A mechanism converts positioning correction information included in an SSR message as defined by 'RTCM STANDARD 10403.2' to positioning correction information conforming to 'RTCM 10402.3'. A conversion device includes a computation processing section that acquires a plurality of types of positioning correction information conforming to &#x201c;RTCM STANDARD 10403.2&#x201d;, an approximate position being a positioning result, and a satellite position of a satellite that transmits positioning information based on which the approximate position is calculated, and based on the types of positioning correction information, the approximate position, and the satellite position that have been acquired, generates pieces of element data, such as CLR and ORB, which are elements used for generating the types of positioning correction information conforming to &#x201c;RTCM 10402.3&#x201d;, by computation, and a conversion calculation section that generates the types of positioning correction information conforming to &#x201c;RTCM 10402.3&#x201d;, based on the pieces of element data.

Conversion device and computer readable medium

A correction data creation unit receives a value of an error used in satellite positioning at a first time interval, and receives a correction value of the error at a second time interval that is a time interval 1/n (n is an integer of two or larger) time interval of the first time interval. The correction data creation unit also corrects the value of the error at the second time interval by using the correction value.

Global positioning device

An observation data screening unit () executes least squares method positioning using, as an observation amount, n (n is an integer of 3 or larger) number of single difference amounts of an L1-wave pseudorange obtained from n pieces of observation data from n number of positioning satellites and n pieces of correction data corresponding to the n pieces of the observation data. The observation data screening unit () calculates a sum of squares of n residuals obtained for each positioning satellite by executing the least squares method positioning and normalizes the n residuals. The observation data screening unit () then evaluates the sum of squares of the residuals and the n normalized residuals.

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Tokyo, Japan

Kazuhiro Terao