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Method of compressing GPS positioning information

A GPS positioning and redundant information technology, applied in positioning, satellite radio beacon positioning system, beacon transmitter, etc., can solve the problems of high short message cost, small data volume, high communication cost, etc., to reduce communication cost , the effect of reducing storage space

Active Publication Date: 2007-04-18
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] However, there are some deficiencies in the information transmission in the GPS field by using the short message of the wireless mobile network. The amount of data transmitted by a short message is very small, but the cost of using the short message communication is very high.
For example, a short message can transmit 160 bytes, while a GPS positioning information occupies 88 bytes, so a short message can only transmit one positioning information, and the communication cost becomes relatively high

Method used

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  • Method of compressing GPS positioning information
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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation to the present invention.

[0026] The mobile terminal compresses the positioning information and stores the compressed data in the terminal's memory. When the monitoring center needs the positioning information, only the required part of the compressed positioning information is uploaded.

[0027] The method of compressing GPS positioning information: There are some redundant information in GPS positioning information, first remove these redundant information. Secondly, the correlation between two consecutive pieces of GPS information is very large. Remove these correlations and only store the difference between the two pieces of GPS information, which can be further compressed.

[0028] Referring to Figure 1, a method for compressing GPS positioning information is provided. The specific steps of the method are as follows:

[0029] Step 1...

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Abstract

The invention supplies GPS locating information compressing method. It includes the following step: sampling GPS locating information, removing redundancy, storing in the storage as basic reference, again sampling and removing redundancy, processing subtraction operation with the basic reference, removing the neighbor information relevance, storing the difference in the storage. The invention can reduce GPS locating information storage space to further decrease communication cost.

Description

Technical field [0001] The present invention relates to the field of data compression, in particular to the use of GPS in order to reduce the data flow in communication, save communication costs, and reduce the terminal storage space occupied by data when transmitting positioning information through the short message service of the wireless mobile network in the GPS field. Technology for compressing location information. Background technique [0002] GPS is a passive positioning system. Therefore, GPS-based vehicle navigation and monitoring systems first need to establish a communication network as the information channel between the mobile terminal and the monitoring center. Because of the wireless mobile network (GSM\GPRS, CDMA, 3G) It has the advantages of large coverage, good signal, relatively low price, etc. Therefore, the use of wireless mobile networks for GPS-based data communication of vehicle navigation and monitoring systems is more popular. The short message service ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S1/00G01S1/02G01S5/00G01S5/02H04Q7/22G01S19/03G01S19/35H04W4/14
Inventor 邓中亮
Owner BEIJING UNIV OF POSTS & TELECOMM
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