GNSS / BeiDou Modules

L1 L5 Multi-GNSS Positioning Module WKG035BT04Y01

WKG035BT04Y01 is a high-performance GNSS positioning and navigation module with dimensions of 43 × 43 × 11.7 mm. It is based on the AT9850 SoC from Zhongke Micro, a high-performance, low-power dual-frequency multi-constellation GNSS receiver chip. The chip integrates an RF front-end, digital baseband, multi-constellation signal processing engine, and power management, offering high integration and simplified external circuitry.

Product Overview

WKG035BT04Y01 is a high-performance GNSS positioning and navigation module with dimensions of 43 × 43 × 11.7 mm. It is based on the AT9850 SoC from Zhongke Micro, a high-performance, low-power dual-frequency multi-constellation GNSS receiver chip. The chip integrates an RF front-end, digital baseband, multi-constellation signal processing engine, and power management, offering high integration and simplified external circuitry.


The module adopts proprietary fast acquisition technology, enabling rapid reception of multiple visible satellite signals for fast and accurate positioning, even in challenging environments such as urban canyons. It features 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. It offers high sensitivity, low power consumption, and cost efficiency, making it ideal for applications such as vehicle navigation, handheld devices, and automotive rearview mirrors.


Utilizing advanced single-chip GNSS SoC technology, the module supports high-precision positioning and timing, while delivering high integration, high performance, and low power consumption. It is widely used in automotive navigation, smartphones, IoT devices, and drones.


Key Features


l Supports L1 and L5 dual-frequency GNSS signal reception

l Supports BDS/GPS/Galileo

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: 1m (CEP50)

l TTFF: ≤20s

l Low power consumption (~30mA @5V)

l Stacked Ceramic Antenna (25 × 25 × 4 mm + 35 × 35 × 4 mm)

l Integrated LNA

l Fast hot start (<1.5s) with onboard capacitor

l Standard NMEA-0183 output


Applications


l Automotive rearview mirror systems

l Handheld positioning devices

l Marine and vehicle navigation

l Tracking and location-based services

l Portable electronic devices


Assisted GNSS


Supports A-GNSS, 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 TTL interface using NMEA-0183 protocol.


Performance Specifications


Module Number
WKG035BT04Y01
Chipset
AT9850
Module Size
43x43x11.7mm
Frequency
BDS: B1I+B1C+B2a
GPS/QZSS: L1+L5
Galieo: E1+E5a
SBAS: L1
Receiver Type
GPS / BDS / Galileo / QZSS / SBAS
Channels
88 channels
Interface
UART (TTL)
Position Accuracy
1m(CEP50)
Cold Start Time
≤20s
Warm Start Time
≤1.5s
Baud Rate
default 115200bps
Output Protocol
NMEA0183
Supply Voltage
3.3V –5.5V
Update Rate
1Hz (max 10 Hz)
Operating Temperature
–35°C to +85 °C
Storage Temperature
–40 °C to +80 °C