Positioning device, method of controlling positioning device

A positioning device and control method technology, applied in positioning, measuring devices, satellite radio beacon positioning systems, etc., can solve the problems of lack of reliability, lack of reliability of the average position, deviation of the output position from the real position, etc.

Inactive Publication Date: 2007-12-05
SEIKO EPSON CORP
View PDF1 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the accuracy of the position after the averaging process deteriorates, and the output position deviates from the true position.
[0008] Furthermore, in the above-mentioned technology, when the GPS receiver is stationary, the longer the elapsed time from the last positioning, the more the predicted position will accumulate deviation from the previous position, and as a result, the output position will deviate from the true position.
[0009] Moreover, because the last positioning positio

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Positioning device, method of controlling positioning device
  • Positioning device, method of controlling positioning device
  • Positioning device, method of controlling positioning device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0092] FIG. 1 is a schematic diagram showing a terminal 1020 and the like according to a first embodiment of the present invention.

[0093] As shown in FIG. 1 , terminal 1020 is owned by user A. Terminal 1020 is capable of receiving signals G1, G2, G3, G4, G5, G6, G7 and G8 from positioning satellites, such as GPS satellites 12a, 12b, 12c, 12d, 12e, 12f, 12g and 12h. This signal G1 etc. is an example of a satellite signal. Furthermore, the terminal 1020 is an example of a positioning device.

[0094] User A is stationary on the mountain road, such as waiting for rescue due to distress. Moreover, the terminal 1020 is also stationary. The real location of terminal 1020 is location r1. The terminal 1020 can improve the accuracy of user A's rescue by outputting a position as close as possible to the real position when the terminal 1020 is actually stationary.

[0095] However, since the GPS satellite 12a etc. moves on its satellite orbit and the reception state of the signal...

no. 2 example

[0246] FIG. 18 is a schematic diagram of the terminal 2020 and the like according to the second embodiment of the present invention.

[0247] As shown in FIG. 18, the terminal 2020 is held by the user A. As shown in FIG. Terminal 2020 is capable of receiving signals G1, G2, G3, G4, G5, G6, G7 and G8 from positioning satellites, such as GPS satellites 12a, 12b, 12c, 12d, 12e, 12f, 12g and 12h. This signal G1 etc. is an example of a satellite signal. Furthermore, the terminal 2020 is an example of a positioning device.

[0248] The user A is in a mountain road MR, and is waiting for help due to distress, for example. Moreover, when the user is stationary, the terminal 2020 is also stationary. The real location of terminal 2020 is location r1. The terminal 2020 can improve the accuracy of user A's rescue by outputting a position as close as possible to the real position r1 when the terminal 2020 is actually stationary.

[0249] In addition, when the user walks, the terminal ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A positioning device, which locates a position based on satellite signals which are signals from positioning satellites, includes a position holding section which holds a reference position P, a stationary condition determination section which determines whether or not the reference position P satisfies stationary conditions B, an average position calculation section which averages the reference position P satisfying the stationary conditions B and a present located position Pg calculated by positioning to calculate an average position Pav, a position output section which outputs the average position Pav, and a position storage section which stores the average position Pav in the position holding section as the reference position P.

Description

technical field [0001] The present invention relates to a positioning device using a signal from a positioning satellite, a control method of the positioning device, a program, and a recording medium. Background technique [0002] Currently, a positioning system for locating the current position of a GPS receiver using GPS (Global Positioning System: Global Positioning System), which is an example of SPS (Satellite Positioning System: Satellite Positioning System), is widely used. [0003] The GPS receiver receives signals from such as more than or equal to 3 GPS satellites, and uses the difference between the time when the signal is sent from each GPS satellite and the time when the signal arrives at the GPS receiver (hereinafter referred to as the delay time), to obtain each GPS satellite and The distance between GPS receivers (hereinafter referred to as pseudorange). Furthermore, positioning calculation of the current position can be performed using the satellite orbit i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S5/14G01C21/00G01S19/40
Inventor 水落俊一
Owner SEIKO EPSON CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap