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Multi-base-station ultra-wideband positioning method based on frequency modulation continuous waves

A technology of frequency modulation continuous wave and positioning method, which is applied in the direction of positioning, radio wave measurement system, measurement device, etc., and can solve the problems of poor positioning accuracy and high clock synchronization requirements.

Active Publication Date: 2020-05-29
杭州优智联科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-base station ultra-wideband positioning method based on FM continuous wave, to solve the problem of poor positioning accuracy caused by the high requirements for clock synchronization and unavoidable delay in the prior art positioning algorithm

Method used

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  • Multi-base-station ultra-wideband positioning method based on frequency modulation continuous waves
  • Multi-base-station ultra-wideband positioning method based on frequency modulation continuous waves
  • Multi-base-station ultra-wideband positioning method based on frequency modulation continuous waves

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0058] like figure 1 As shown, the multi-base station ultra-wideband positioning method based on FM continuous wave includes the following steps:

[0059] (1), such as figure 2 As shown, the mobile tag MS is made to send the frequency modulation continuous wave signal to the multi-base station ultra-wideband positioning system. In the multi-base station ultra-wideband positioning system, the M base stations respectively receive the frequency modulation continuous wave signal. In this embodiment, three base stations are used as an example. The three base stations are BS1, BS2, and BS3 respectively.

[0060] In step (1), the frequency modulation continuous wave signal sent by the mobile tag MS to the multi-base station ultra-wideband positioning system is an ideal triangular wave signal, and the influence of parasitic amplitude modulation, noise and c...

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Abstract

The invention discloses a multi-base-station ultra-wideband positioning method based on frequency modulation continuous waves. The method comprises the steps: enabling a mobile label to send frequencymodulation continuous waves; after each base station receives the signals sent by the mobile label, processing the signals received by any two base stations to obtain the frequency difference of thesignals received by the two base stations, and then calculating the distance difference between the mobile label and the two base stations; according to a hyperbolic positioning principle, combining aleast square method and Kalman filtering fusion algorithm to finally achieve the purpose of accurately positioning the mobile label. According to the method, the positioning precision can be improved, and the geometric principle and the fusion algorithm are easy to implement.

Description

technical field [0001] The invention relates to the field of base station positioning systems, in particular to a multi-base station ultra-wideband positioning method based on frequency modulation continuous waves. Background technique [0002] The base station ultra-wideband (UWB) positioning system generally includes multiple base stations, which receive the signal sent by the mobile tag through each base station, and then use TOA, TDOA, AOA and other algorithms to perform positioning and ranging. However, the existing TOA, TDOA, AOA and other algorithms generally need to involve time parameters, have high requirements for clock synchronization of each base station, and cannot avoid errors caused by delays, resulting in low positioning accuracy. Contents of the invention [0003] The purpose of the present invention is to provide a multi-base station ultra-wideband positioning method based on FM continuous wave, so as to solve the problem of poor positioning accuracy cau...

Claims

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Application Information

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IPC IPC(8): H04W64/00G01S5/12
CPCG01S5/12H04W64/00H04W64/003
Inventor 陈文晓吴极董宗宇
Owner 杭州优智联科技有限公司
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