GNSS / BeiDou Modules

BeiDou Positioning Module WKG0254R02Y01

WKG0254R02Y01 is a high-performance BeiDou-only positioning and navigation module with a compact size of 28 × 28 × 7 mm. It is based on the AT6668 SoC, a sixth-generation multi-system GNSS single-chip solution from Zhongke Micro, supporting BeiDou-2 and BeiDou-3 (B1I and B1C) signals.

Product Overview

WKG0254R02Y01 is a high-performance BeiDou-only positioning and navigation module with a compact size of 28 × 28 × 7 mm. It is based on the AT6668 SoC, a sixth-generation multi-system GNSS single-chip solution from Zhongke Micro, supporting BeiDou-2 and BeiDou-3 (B1I and B1C) signals.


The module adopts proprietary fast acquisition technology, enabling rapid satellite signal capture and fast, accurate positioning, even in challenging environments such as urban canyons. It integrates a high-performance embedded CPU and supports a maximum position update rate of up to 10 Hz, making it suitable for high-dynamic and low-latency applications.


With built-in anti-interference hardware acceleration, the module can quickly detect and suppress RF interference. Featuring high sensitivity, low power consumption, and cost efficiency, it is ideal for applications such as vehicle navigation, handheld devices, and automotive rearview mirrors.


The module uses advanced single-chip navigation SoC technology to support high-precision positioning and timing, while offering high integration, high performance, low power consumption, and compact size. It is widely applicable in automotive navigation, wearable devices, smartphones, IoT devices, and drones.


Key Features


l Supports BDS-2 / BDS-3 (B1I, B1C)

l Supports A-BDS

l Cold start sensitivity: -148 dBm

l Hot start sensitivity: -156 dBm

l Reacquisition sensitivity: -160 dBm

l Tracking sensitivity: -162 dBm

l Position accuracy: 2m (CEP50)

l TTFF: ≤23s

l Low power consumption (~45mA @5V)

l Integrated LNA

l Built-in 25x25x4mm ceramic antenna(customization size available) 

l Fast hot start (<1s) with onboard capacitor

l Standard NMEA-0183 output


Applications


l Vehicle navigation and tracking

l Power timing / 4G/5G synchronization

l IoT positioning devices

l UAV (drones)

l Portable device


Assisted GNSS


Supports A-BDS, providing assistance data such as ephemeris, approximate position, and time.

This significantly reduces Time-To-First-Fix (TTFF), even in weak signal environments.

 

Output Protocol


The module outputs data via UART interface using NMEA-0183 protocol.


Performance Specifications


Module Number
WKG0254R02Y01
Chipset
AT6668
Module Size
28x28x7mm
Satellite System
B1I/B1C
Band
BDS:B1I、B1C
Tracking Sensitivity
-162dBm
Re-acquisition Sensitivity
-160dBm
Cold Start Time
≤23s
Warm Start Time
<1s
Hot Start Time
<1s
UART Baud Rate
default:115200bps
Output Protocol
NMEA0183
Supply Voltage
DC 3.3V to 5.5V
Update Rate
1Hz default / up to 10Hz
Position Accuracy
<2.5m (CEP50)
Operating Temperature
–40 °C to +85 °C
Storage Temperature
–50 °C to +125 °C