Indoor positioning system and method based on mobile terminal GPS
A mobile terminal and indoor positioning technology, applied in the field of indoor GPS positioning, can solve the problem of inaccurate indoor GPS positioning and achieve the effect of improving accuracy
Inactive Publication Date: 2015-07-15
SOUTHEAST UNIV
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[0004] The present invention provides a mobile terminal-based indoor positioning system and method based on weak indoor GPS information, and solves the problem of inaccurate indoor GPS positioning
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[0030] The specific technical route of the present invention will be discussed and illustrated in detail below in conjunction with the accompanying drawings.
[0031] The mobile terminal of the positioning system and method of the present invention is described by taking the Android system as an example in each embodiment, and of course other operating systems can also be used.
[0032] figure 1 Show a concrete implementation block diagram of a kind of indoor relative positioning system based on Android mobile terminal GPS provided by the present invention;
[0033] The GPS positioning module 100, the orientation sensor module 102, the RRC radio frequency ranging module 104 and the wireless transceiver module 106 are all externally connected to the wireless data acquisition terminal in the form of USB; the data acquisition control terminal is placed in an outdoor area with good GPS signal strength, and a reference point is selected The GPS positioning module 100 is used to ob...
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The invention discloses an indoor positioning system and method based on mobile terminal GPS. The indoor positioning system comprises a GPS module used for outdoor positioning, and a mobile terminal used for indoor positioning, wherein the GPS module is arranged on a data acquisition module, and an orientation sensor module and a distance measuring module are also arranged on the data acquisition module; the mobile terminal comprises a control module, a module for conversion from longitude and latitude coordinates to plane coordinates, an indoor relative positioning module, and an indoor distribution drawing module; the control module is used for sending a control command and saving data from a data acquisition terminal; the indoor relative positioning module is used for obtaining the plane coordinates of an indoor point to be measured; a module for conversion from the plane coordinates to the longitude and latitude coordinates is used for converting the obtained plane coordinates of the indoor point to be measured to the longitude and latitude coordinates. The indoor positioning system and method have the advantages that the relative relationship between a precise GPS point and the two coordinate systems is utilized to obtain the GPS positioning information of any indoor point, so that the precise GPS positioning in an indoor dead zone can be achieved, and a transitional positioning method can be provided for the indoor dead zone without network signals.
Description
technical field [0001] The invention relates to the field of indoor GPS positioning, in particular to an indoor positioning method based on a mobile terminal. Background technique [0002] GPS positioning is completed based on the antenna receiving satellite signals. Generally speaking, the more satellites searched, the higher the GPS positioning accuracy. Then, for indoors, it is difficult for satellite signals to pass through thick and heavy walls, so the satellite signals searched by the GPS antenna placed indoors are relatively weak, resulting in very low indoor GPS positioning accuracy. [0003] Based on the Android platform, the indoor GPS positioning is studied in the form of relative coordinates. On the one hand, the Android platform is open-source, widely used, and practical; on the other hand, the current indoor positioning method is mainly network positioning. For blind areas with weak GPS positioning signals, the indoor relative positioning method based on GPS c...
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IPC IPC(8): G01S19/46
CPCG01S19/46G01C21/206
Inventor 李冰虞娟钱鑫海李雪雪李艳张紫微俞凯田洋陈帅董乾刘勇赵霞王刚
Owner SOUTHEAST UNIV