Angle of arrival determination in electronic devices with fused decision from motion
US-11956752-B2 · Apr 9, 2024 · US
System and method for establishing relative distance and position of a transmitting antenna
US11630182B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11630182-B2 |
| Application number | US-202117366382-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 2, 2021 |
| Priority date | May 15, 2019 |
| Publication date | Apr 18, 2023 |
| Grant date | Apr 18, 2023 |
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Abstract
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A system and method for a second wireless device to establish distance and location of a first device which is transmitting radio waves includes the first and second devices. Each second device includes two or more (N in number) receiving antennas. An angle between the directions in which adjacent receiving antennas receive the strongest signals is 360°/N. The second device obtains a received signal strength indicator (RSSI) of each receiving antenna receiving signals from the first device, and from the two strongest receiving antennas, calculation of an angle between the first device and one of the adjacent receiving antennas can be performed. The distance between the first device and the second device can also be calculated.
First claim
Opening claim text (preview).
What is claimed is: 1. A positioning system comprising: a first device comprising two receiving antennas, wherein a number of the at least two receiving antennas is defined as N, an angle between the directions in which adjacent two of the receiving antennas receive the strongest signals is 360°/N; and a second device having a transceiving function, wherein the first device obtains received signal strength indicators (RSSI) of the receiving antennas, determines which of the two receiving antennas is closest to the second device according to the received signal strength indicators (RSSI), calculates an angle between the second device and the closest receiving antennas according to the received signal strength indicators (RSSI), and obtains a distance between the second device and the first device according to the angle and a gain of one of the closest receiving antennas, wherein the first device further calculates the angle between the second device and the closest receiving antennas according to a formula as follows: AntI R S S I - AntIV R S S I = 1 0 log ( 4 π sin 2 θ 1 ) - 10 log ( 4 π sin 2 ( 360 ° N - θ 1 ) ) , wherein, θ 1 represents the angle between the second device and the closest receivings antenna, AntI RSSI and AntIV RSSI represents RSSIs of the two closest receiving antennas. 2. The positioning system of claim 1 , wherein the first device calculates the gain of one of the closest receiving antennas according to a formula as follows: Gt 1 ( dB ) = 10 log ( 4 π sin 2 θ 1 ) , wherein Gt 1 (θ 1 ) represents the gain of the closest receiving antennas, the first device further calculates the distance between the second device and the first device according to a following formula d 1 = 1 2 0 ln ( AntI R S S I + P t + G t ( θ 1 ) + G r + 20 log λ ) , wherein Pt represents an output power of the second device, Gr represents a gain of a transmitting antennas and λ represents a wavelength. 3. The positioning system of claim 2 , wherein the first device obtains a preset number of RSSIs of each of the receiving antennas, and uses an average value of the RSSIs as the RSSI of each of the receiving antennas. 4. The positionings system of claim 1 , wherein the first de
Assignees
Inventors
Classifications
- G01S5/12Primary
by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial · CPC title
- G01S5/04Primary
Position of source determined by a plurality of spaced direction-finders · CPC title
using intensity measurements · CPC title
derived directly from separate directional systems · CPC title
- G01S5/14Primary
Determining absolute distances from a plurality of spaced points of known location · CPC title
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- What does patent US11630182B2 cover?
- A system and method for a second wireless device to establish distance and location of a first device which is transmitting radio waves includes the first and second devices. Each second device includes two or more (N in number) receiving antennas. An angle between the directions in which adjacent receiving antennas receive the strongest signals is 360°/N. The second device obtains a received s…
- Who is the assignee on this patent?
- Nanning Fulian Fugui Prec Industrial Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01S5/12. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 18 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).