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Positioning apparatus and positioning method

A technology of positioning device and positioning part, which is applied to measurement devices, satellite radio beacon positioning systems, instruments, etc., can solve problems such as poor two-dimensional coordinate positioning accuracy

Inactive Publication Date: 2016-02-03
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the two-dimensional positioning mode, if the difference between the height set to the temporary height information and the actual height is relatively large, compared with the three-dimensional positioning mode, the calculated two-dimensional coordinates (x, y) of the current position Poor positioning accuracy

Method used

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  • Positioning apparatus and positioning method

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Embodiment Construction

[0013] Hereinafter, specific embodiments of the present invention will be described using the drawings. However, the scope of the invention is not limited to the illustrated examples.

[0014] figure 1 It is a block diagram showing a schematic configuration of a positioning device 100 according to an embodiment of the present invention.

[0015] Such as figure 1 As shown, the positioning device 100 has: a central control unit 1, a memory 2, a positioning processing unit 3, an altitude calculation unit 4, a map storage unit 5, a voice transceiver unit 6, a communication control unit 7, a display unit 8, a display control unit 9, And the operation input unit 10 and the like.

[0016] Furthermore, the central control unit 1 , memory 2 , positioning processing unit 3 , altitude calculation unit 4 , map storage unit 5 , voice transceiver unit 6 , communication control unit 7 , and display control unit 9 are connected via a bus 11 .

[0017] In addition, the positioning device 1...

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Abstract

Provided is a positioning apparatus for determining positions including: a distance acquisition unit configured to acquire pseudo-range information pieces indicating pseudo-ranges from the positioning apparatus to three positioning satellites; an altitude acquisition unit configured to acquire the altitude of the position of the positioning apparatus based on map information; a setting unit configured to set the altitude acquired by the altitude acquisition unit as a tentative altitude at the position of the positioning apparatus; and a positioning unit configured to perform a positioning process in a two-dimensional positioning method based on the pseudo-range information acquired by the distance acquisition unit, and the tentative altitude.

Description

technical field [0001] The invention relates to a positioning device and a positioning method. Background technique [0002] Conventionally, there is known a device that measures a position using GNSS (Global Navigation Satellite System: Global Navigation Satellite System) such as GPS (Global Positioning System: Global Positioning System), for example. For example, in Patent Document 1 (Japanese Unexamined Patent Publication No. 2007-256041), the positioning device determines " The four unknowns are latitude, "longitude", "height", and "time error". [0003] The positioning processing performed by the positioning device includes, for example, a three-dimensional positioning mode (3DFix) using signals transmitted from four or more positioning satellites and a two-dimensional positioning mode (2DFix) using signals transmitted from three positioning satellites. [0004] In the three-dimensional positioning mode, more than four pseudorange information are used to calculate the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/42
CPCG01S19/48G01S19/50
Inventor 小野寺丰
Owner CASIO COMPUTER CO LTD