Unlock instant, AI-driven research and patent intelligence for your innovation.
Method and device for measuring the position of mobile station
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A mobile station position, center position technology, applied in the direction of measuring devices, radio wave measurement systems, positioning, etc., can solve the problem of reducing positioning accuracy
Active Publication Date: 2019-02-19
BEIJING UNIV OF POSTS & TELECOMM
View PDF4 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0013] It is worth noting that the observation value Z(k) contains a Gaussiannoise V(k), therefore, the Kalman filter method is only applicable to the case where the distribution of the solution result is a Gaussian distribution; if the fusion of multiple positioning techniques is used , the obtained solution results satisfy the situation that multiple Gaussian distributions are superimposed. At this time, the Kalman filter method will no longer be applicable, thus reducing the positioning accuracy
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0065] Such as figure 1 As shown, it is a flow chart of the method for measuring the position of the mobile station provided by the embodiment of the present invention. This method can be applied to the measurement device for the position of the mobile station. The observed value of the mobile station position is calculated to obtain the probability density of each positioning technology in all positioning technologies at the current moment, and according to the probability density, the position of the mobile station at the current moment is calculated.
[0066] The methods include:
[0067] S110) Obtain the observed values of the positions of the mobile stations that satisfy the corresponding distribution of the positioning technology at the current moment of the N positioning technologies.
[0068] In this embodiment, this method is applicable to a variety of distribution situations. For example, the observed values of the mobile station position obtained by the N posit...
Embodiment 2
[0133] Such as image 3 As shown, it is a schematic structural diagram of a mobile station position measuring device provided by an embodiment of the present invention, which is used to perform figure 1 In the method shown, the device includes: an observation value acquisition module 310 , a first probability density calculation module 320 , a second probability density calculation module 330 and a mobile station position calculation module 340 .
[0134] Observation value acquisition module 310, used to obtain the observation value of the position of the mobile station that satisfies the corresponding distribution of the positioning technology at the current moment of N kinds of positioning technologies;
[0135] The first probability density calculation module 320, connected to the observation value acquisition module 310, is used to calculate the first position of the mobile station at the current moment of the positioning technology according to the prediction equation of ...
Embodiment 3
[0140] As the preferred version of the above-mentioned embodiment two, the difference from embodiment two is:
[0141] The observation value acquisition module 310 includes: a first area acquisition unit, a first observation value acquisition unit and a second observation value acquisition unit (not shown in the figure).
[0142] The first area acquisition unit is configured to map the position of the mobile station into a two-dimensional coordinate system, and select a first area near the real position of the mobile station in the two-dimensional coordinate system; wherein, the nth positioning technology observes the observed value of the position of the mobile station Obey Gaussian distribution, n=1, 2, 3, 4...N;
[0143] The first observed value acquisition unit is connected to the first area acquisition unit, and is used to make the current moment the kth moment, if the kth moment is the initial moment for measuring the position of the mobile station, then the first area i...
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
Login to View More
Abstract
The invention provides a mobile station location measurement method and device. The method comprises the steps that the mobile station location observation value of N positioning technologies satisfying the corresponding distribution of the positioning technology at the current time is acquired; the first probability density of the mobile station location of the positioning technology at the current time is calculated according to the prediction equation and the observation equation of the mobile station location; according to the first probability density ratio and the first probability density of the mobile station location of the corresponding positioning technology at the current time, the second probability density of the mobile station location at the current time is calculated; the weight of the mobile station location at the current time is calculated according to the second probability density of the mobile station location at the current time; and the mobile station location at the current time is calculated according to the weight of the mobile station location at the current time and the to-be-estimated value of the mobile station location at the current time. According to the invention, the method and the device are applicable to the fusion of a number of positioning technologies; an acquired calculation result meets the case of multiple Gaussian distribution superimposition; and the positioning accuracy is improved.
Description
technical field [0001] The invention relates to the technical field of wireless positioning, in particular to a method and device for measuring the position of a mobile station. Background technique [0002] With the continuous development of wireless positioning technology, people's requirements for positioning accuracy are getting higher and higher. [0003] A variety of wireless positioning technologies are disclosed in the prior art, such as GPS (Global Positioning System) positioning technology, Cell-ID (cell identification code) positioning technology, TDOA (Time Difference of Arrival, time difference of arrival) positioning technology, RSSI ( Received Signal Strength Indication, received signal strength indication) positioning technology and so on. [0004] When locating a certain mobile station, due to the existence of systematic errors, the observed value of the mobile station’s position is not exactly the same as the real value of the mobile station’s position. Th...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More