Carrier phase GPS positioning device and method

A technology of GPS positioning and carrier phase, which is used in measuring devices, satellite radio beacon positioning systems, radio wave measurement systems, etc.

Active Publication Date: 2006-11-15
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the above technique, an IMU is required in addition to the RTK positioning device, and when the electromagnetic wave is interrupted, the variance of the position measured by the IMU alone needs to be calculated

Method used

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  • Carrier phase GPS positioning device and method
  • Carrier phase GPS positioning device and method
  • Carrier phase GPS positioning device and method

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Embodiment Construction

[0041] Preferred embodiments of the present invention will be explained below with reference to the accompanying drawings.

[0042] figure 1 is a schematic diagram of the carrier phase GPS positioning device according to the present invention.

[0043] like figure 1 As explained in , the carrier phase GPS positioning system includes: a GPS satellite 10 orbiting the earth, a reference station 20 at a fixed position (known position), and a mobile station on the earth and capable of moving on the earth 30.

[0044] Each of the GPS satellites 10 continuously broadcasts navigation messages to the earth. The navigation information includes the orbit information of the corresponding GPS satellite 10, the clock correction value and the correction coefficient of the ionosphere. The navigation information is spread using a C / A code, carried on an L1 carrier (frequency: 1575.42 MHz), and broadcast to the earth.

[0045] Currently, there are 24 GPS satellites orbiting the Earth at an...

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Abstract

A carrier phase GPS positioning device is disclosed, which acquires a carrier phase accumulation value of satellite signals at one time on the mobile station side, associates plural carrier phase accumulation values on the reference station side at plural times prior to the one time with the carrier phase accumulation value on the mobile station side, and estimates an integer ambiguity included in the carrier phase accumulation value of signals transmitted from the satellite received by the mobile station.

Description

technical field [0001] The present invention relates to a carrier phase GPS positioning device and method for detecting the position of a mobile station through carrier phase GPS (Global Positioning System) positioning. Background technique [0002] Recently, carrier-phase GPS positioning has been widely used in the field of position measurement. In the carrier phase GPS positioning, the receiver on the reference side and the receiver on the positioning side simultaneously receive signals from a plurality of satellites, and respectively calculate the The accumulated value of the carrier phase is obtained to obtain a carrier phase accumulation value (hereinafter referred to as "phase accumulation value" if necessary). The carrier phase accumulation value obtained in this way includes an uncertainty factor which is an integer multiple of the carrier wavelength. This uncertainty factor is called "integral carrier phase ambiguity", and is often referred to simply as "integral ...

Claims

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Application Information

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IPC IPC(8): G01S19/43G01S19/44
Inventor 香川和则山下胜司田岛靖裕小野目宽久
Owner TOYOTA JIDOSHA KK
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