Canonical page: [UWB PDoA Positioning & Direction Finding](https://www.rpilink.com/solutions/uwb-pdoa/)

Website: Jinju Intelligence (Beijing) Technology Co., Ltd.

Language: English

Format: Markdown alternative generated from the public HTML main content.

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[Solutions / UWB PDoA Positioning](https://www.rpilink.com/solutions/)

PHASE DIFFERENCE OF ARRIVAL

# UWB PDoA Positioning .

Use phase differences to understand direction.

For entry-direction detection, local guidance and combined range/angle applications. Phase differences across coherent receiving antennas estimate arrival direction; ranging or multiple stations provide the additional location constraints.

[Discuss your solution](https://www.rpilink.com/contact/)

SOLUTION PROFILE

Positioning objective

Angle / range fusion; confirm hardware capabilities

System components

PDoA-capable RF hardware + calibrated array + compatible tags

Passage direction Local target guidance Range and angle fusion

HOW IT WORKS

## From radio signals to usable location.

A signal produces a phase difference at spatially separated antennas. Array geometry and RF calibration translate this into an angle estimate. An angle alone does not uniquely determine a complete position: range, additional angles or other constraints are normally required.

SYSTEM ARCHITECTURE CONCEPT · NOT LIVE DATA

01

### UWB signal

A compatible tag transmits a signal for phase observation.

02

### Coherent reception

Dedicated RF hardware obtains multi-antenna phase measurements.

03

### Calibrated angles

Calibrate phase, antennas and installation geometry.

04

### Constraint fusion

Combine range or multiple observations to determine position.

### Direction information

Add an angular dimension to support direction-aware applications.

### Local evaluation

Assess defined spaces such as entrances and workstations using sample hardware.

### Fusion options

Combine ranging, multiple stations and motion constraints as hardware permits.

DEPLOYMENT ESSENTIALS

## Check the deployment requirements.

01 PDoA requires suitable RF hardware. A UWB or dual-channel product name does not imply coherent phase measurements.

02 Antenna spacing, phase ambiguity, temperature drift and metal reflections affect angles; on-site calibration is required.

03 None of the supplied specifications explicitly confirms PDoA support. Related products are enquiry entry points, not a compatibility commitment.

RELATED HARDWARE

## Start with the right hardware

Related products are selection entry points. Confirm models, channels, protocols, firmware and acceptance criteria.

![Indoor UWB Positioning Station](https://www.rpilink.com/products/product-20/product.png)

Positioning Stations

JJ-IS40BUA / JJ-U

### Indoor UWB Positioning Station

Connect floor-level location with 3D space.

UWB / Dual-mode communication

[Open linked page](https://www.rpilink.com/products/product-10/)

![Bluetooth UWB Asset Tag](https://www.rpilink.com/products/product-05/image2.png)

Beacons & Tags

JJ-IP32BU

### Bluetooth UWB Asset Tag

Dual-mode tracking for detailed asset visibility.

BLE + UWB / Three-axis sensor

[Open linked page](https://www.rpilink.com/products/product-05/)

Technical reference: [Qorvo · UWB phase differences and ranging ↗](https://www.qorvo.com/resources/d/qorvo-getting-back-to-basics-with-ultra-wideband-uwb-white-paper) . Product capabilities remain subject to their specifications and selection validation.

LET’S BUILD YOUR POSITIONING SYSTEM

## Make location data work for your site.

Plan your site survey, hardware selection and platform integration with Jinju.

[zydc0915@gmail.com](mailto:zydc0915@gmail.com) [Discuss your requirements](https://www.rpilink.com/contact/)