Cellular TDOA positioning algorithm based on Taylor series expansion
A technology of Taylor series and positioning algorithm, which is applied in the field of communication, can solve problems such as performance degradation and achieve good convergence performance
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[0040] In order to make the technical means realized by the present invention, innovative features and functions easy to understand, the present invention will be further elaborated below.
[0041] A kind of cellular TDOA positioning algorithm based on Taylor series expansion, it adopts the least squares algorithm to estimate the user's initial position, then obtains user coordinates by Taylor series expansion algorithm;
[0042] Based on TDOA's cellular network positioning technology, after obtaining multiple TDOA measurement values, the positioning equation is established (1):
[0043] R i,1 =cΔτ i =R i -R 1 i=2,... N (1)
[0044] in
[0045]
[0046] (X i ,Y i ) is the coordinates of the base station, (x, y) is the coordinates of the mobile station to be tested, R i is the distance between the mobile station and the base station, N is the number of base stations involved in positioning. c is the speed of light, Δτ i For the measured serving base station Bs 1 w...
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