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Closed-formed solution and iteration algorithm combination-based AOA positioning method

An iterative algorithm and positioning method technology, applied in the field of wireless positioning, to achieve the effect of reducing the amount of calculation, avoiding errors, and improving positioning accuracy

Inactive Publication Date: 2018-02-16
UNIV OF ELECTRONIC SCI & TECH OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TDOA and TOA are widely used in positioning hardware systems due to their high positioning accuracy, but both positioning methods require precise time synchronization

Method used

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  • Closed-formed solution and iteration algorithm combination-based AOA positioning method
  • Closed-formed solution and iteration algorithm combination-based AOA positioning method
  • Closed-formed solution and iteration algorithm combination-based AOA positioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] Consider to conduct 1000 simulation tests in a 2e3×2e3 two-dimensional plane, and count the positioning errors. Assuming there are 11 base stations, their location coordinates are shown in figure 2 , the coordinate position of the i-th base station is bs i =(x i ,y i ), i=1,2,...,11. Each simulation randomly generates a target position in the plane, and estimates the target location. Calculate the estimated error after each positioning, and calculate the average error after 1000 simulations.

[0040] Specifically, in each simulation, a random target position is first generated, assuming that the moving target position is ms=(x, y), taking one of the simulations as an example, the random target position is generated as ms=(-138.78, 375.93), and the target The measurement angle is calculated from the position coordinates and the base station coordinates, namely

[0041]

[0042] Among them, (x 1 ,y 1 ) = (323.54, -716.20), (x 2 ,y 2 ) = (-547.25, -267.28), (...

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Abstract

The invention relates to wireless positioning technologies and specifically relates to a closed-formed solution and iteration algorithm combination-based AOA positioning method. According to the closed-formed solution and iteration algorithm combination-based AOA positioning method, a weighted least squares estimation method is adopted for acquire a closed-formed solution for estimating an objectposition based on an AOA basic positioning algorithm, the closed-formed solution is used as an initial value for an iterative algorithm in iterative operation, the object position is further preciselyestimated, and an iterative result is subjected to determining operation; if divergence is determined, the closed-formed solution is a final solution for object estimation; if non-divergence is determined, the iterative result is the final solution. Via the method, good positioning precision can be obtained.

Description

technical field [0001] The invention relates to a wireless positioning technology, in particular to an AOA positioning method combining a closed solution and an iterative algorithm. Background technique [0002] Wireless positioning refers to the use of characteristic parameters of radio wave signals to estimate the coordinate position of a specific object in a certain reference system. With the development of wireless communication technology, Internet technology and wireless sensor network, wireless positioning has been widely used in many military and civilian fields. In the military system, accurate positioning of the target is conducive to the use of precision strike weapons, providing a strong guarantee for the final destruction of the enemy. In the civilian system, accurate positioning of the target is conducive to providing it with more reliable and convenient services. [0003] According to different characteristic parameters, commonly used wireless positioning tec...

Claims

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Application Information

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IPC IPC(8): G01S5/02H04W64/00
CPCG01S5/02H04W64/006
Inventor 黄际彦张曦文王义圆周贻能母国才曹厚华
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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