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positioning terminal

A technology for positioning terminals and positioning units, applied to satellite radio beacon positioning systems, instruments, measuring devices, etc.

Active Publication Date: 2017-10-03
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, there may be cases where the positioning accuracy itself improves by using signals from artificial satellites whose certification has not been completed for positioning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Deformed example 1

[0133] In addition, in the present embodiment, an example was shown in which the ratio of the certified GPS satellites 2 among the GPS satellites 2 used for positioning was used as the certification level, but it is not necessarily limited to this. For example, the authentication level in the case where the signal quality of the current position is prioritized as the positioning result may be determined as follows.

[0134] First, the authentication level of the authentication priority positioning result compared with the signal quality priority positioning result in S25 is obtained. As described above, the authentication level of the authentication-priority positioning result may be the ratio of the authenticated GPS satellites 2 among the GPS satellites 2 used in the authentication-priority positioning calculation process. Furthermore, the signal quality priority positioning result may be a value obtained by multiplying the authentication level of the authentication priority...

Deformed example 2

[0137] In the above embodiment, the current position, that is, the positioning result selected in S25 is sent to the service center 300, but it is not limited thereto. It is assumed that which of the priority authentication level and the positioning accuracy differs depending on the type of service provided by the service center 300 . That is, in the service center 300 which is the receiving side of the location data, it is preferable to select which of the positioning result prior to the authentication and the positioning result prior to the signal quality is used. Therefore, the in-vehicle device 200 may transmit both the authentication priority positioning result and the signal quality priority positioning result together with the authentication level.

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Abstract

The present invention relates to a positioning terminal, wherein an in-vehicle Apparatus (200) preferentially uses the positioning result (authentication priority positioning result) of the GPS satellite (2) that has been authenticated and uses the GPS satellite (2) regardless of whether the authentication is completed or not. Compare the positioning results of signals received by GPS satellites with better signal quality (signal quality priority positioning results). Moreover, when the location indicated by the signal quality-prioritized positioning result exists within a certain distance (for example, 100m) from the location indicated by the authentication-prioritized positioning result, the position data indicated by the signal quality-prioritized positioning result is used as the current location.

Description

[0001] This indication is based on the Japanese application number 2014-21630 for which it applied on February 6, 2014, and uses the description content here. technical field [0002] The present disclosure relates to a positioning terminal that locates the position of its own terminal based on signals received from artificial satellites used in a satellite positioning system. Background technique [0003] Conventionally, a positioning terminal is known which receives a signal from an artificial satellite used in a satellite positioning system and locates the position of its own terminal. [0004] However, in recent years, due to the development of simulators capable of artificially generating signals from artificial satellites, there has been a possibility that a malicious person may use the simulators to cause a positioning terminal to calculate a wrong position. [0005] In contrast, Patent Document 1 proposes a technique for authenticating whether or not a signal receive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/21G01S19/05G01S19/28
CPCG01S19/39G01S19/42G01S19/396
Inventor 隈部正刚山城贵久
Owner DENSO CORP