Product Overview

The GPS & BDS Positioning Module is a high-performance BDS/GNSS positioning and navigation module based on the ATGM336H-5N chip. It supports multiple satellite navigation systems including China's BeiDou-2 and BeiDou-3 (all satellites 1-63), the U.S. GPS, Russia's GLONASS, and Japan's QZSS, enabling simultaneous reception of satellite signals from these systems for joint positioning, navigation, and timing.

With advantages of high sensitivity, low power consumption, and low cost, this module is suitable for various applications including vehicle navigation, handheld positioning, wearable devices, and robotics development.

Key Advantages

Multi-Satellite System Joint Positioning

Supports BDS, GPS, QZSS, and GLONASS—four major satellite navigation systems. Enables independent positioning with single system or joint positioning with any combination. Equipped with 32-channel high-sensitivity receiver for more stable and reliable positioning.
High-Precision Positioning

Positioning accuracy of 2.5 meters (CEP50), cold start acquisition sensitivity -148dBm, tracking sensitivity -162dBm. π-type antenna network design with 50Ω impedance matching, antenna VSWR below 1.6 for optimal reception power.
Fast Positioning

32 seconds cold start, fast acquisition with hot start, supports A-GNSS assisted positioning for rapid satellite signal search.
Multiple Interface Support

Plug-and-play USB serial port, also supports TTL serial connection. Built-in antenna detection and short-circuit protection. On-board PH2.0 serial port and USB Type-C interface.
Comprehensive Development Examples

Provides open-source development tutorials for 51 MCU, Arduino, STM32, Jetson Nano, Raspberry Pi, and ROS.
Deep ROS Integration

Supports data reading, trajectory drawing, IMU fusion, Move_Base navigation and other functions.
Complete Coordinate System Conversion

Provides WGS-84 → GCJ-02 → BD-09 complete coordinate system conversion solutions.
Supporting PC Software

GnssToolKit3 visualization tool, supporting satellite status viewing, data logging, and KML export.

Hardware Overview

GPS & BDS Module Hardware Structure

Technical Specifications

Module Model	ATGM336H-5N
Signal Reception	BDS/GPS/QZSS/GLONASS
RF Channels	32 channels, supports simultaneous multi-system reception
Cold Start TTFF	≤32 seconds
Hot Start TTFF	≤1 second
Reacquisition TTFF	≤1 second
Cold Start Acquisition Sensitivity	-148dBm
Hot Start Acquisition Sensitivity	-156dBm
Reacquisition Sensitivity	-160dBm
Tracking Sensitivity	-162dBm
Positioning Accuracy	<2.5 meters (CEP50)
Speed Measurement Accuracy	<0.1m/s
Position Update Rate	Default 1Hz, maximum 10Hz
Serial Port Characteristics	Baud rate range: 4800bps-115200bps, default 9600bps
Protocol	NMEA-0183
Maximum Altitude	18000m
Maximum Speed	515m/s
Maximum Acceleration	4g
Power Supply	3.3V-5V
BDS+GPS Typical Power Consumption	25mA@3.3V
Operating Temperature	-40℃ to +85℃
Storage Temperature	-45℃ to +125℃

Pin Definition

Pin 1	5V - 5V power input
Pin 2	GND - Ground
Pin 3	RES - Module reset pin
Pin 4	PPS - Pulse per second output
Pin 5	TX - TX serial data output
Pin 6	RX - RX serial data input (optional)

Key Features

Multi-mode joint positioning and navigation with GPS, GLONASS, BeiDou
Low power consumption / high sensitivity / low cost
WIFI positioning in low signal areas, with A-GNSS for fast satellite search
Latitude, longitude, and altitude positioning
Position accuracy output
A-GNSS assisted positioning for faster startup
UTC time and date from satellites
Antenna detection and short-circuit protection
Speed information output
Ground speed and heading speed output
Satellite information: number of connected satellites, positions and validity

Compatibility

Connecting to SBC or PC

PC computer connection

Raspberry Pi connection
Connecting to MCU Development Boards

Arduino connection

STM32 connection

51 development board connection

Technical Support

For detailed technical documentation and tutorials, please refer to our official resources. Community technical support is also available to help accelerate your project implementation.

Documents

Arduino Example Code
STM32 Example Code
Python Example Code
ROS Tutorial
Jetson Nano Tutorial
Raspberry Pi Tutorial
Coordinate System Conversion Guide
GnssToolKit3 Software

Part List

Juxi GPS & BDS Positioning Module	1 - Main module
3m Active GPS Antenna	1 - High-gain antenna for faster satellite acquisition
USB Type-C Data Cable	1 - For connecting to PC or development board
PH2.0 Dupont to Jumper Wire 5Pin	1 set - For TTL serial connection

GPS & BeiDou GNSS Positioning Module — Multi-System, 2.5m Accuracy, ROS Support