丨 Product Introduction
1. Accurate positioning: centimeter level positioning accuracy, meeting the needs of professional fields.
2. Multi satellite collaboration: compatible with multiple satellite navigation constellations, with excellent signal reception capability and high positioning reliability.
3. Excellent anti-interference ability: It can effectively resist electromagnetic interference and work stably in complex environments.
4. Compact structure: The small size facilitates integration in devices that require high space.
丨 Specification parameters
|
Chip
characteristics
|
working frequency
|
BDS：B1l、 B2l、B3l、B1C、B2a、B2b
GPS：L1 C/A、L1C、L2、L5
GLO：G1、G2
GAL：E1、E5a、E5b、E6
QZSS：L1 C/A、L1C、L2、L5、L6 (CLAS)
NavlC：L5
SBAS*：L1 C/A
|
|
chip
|
Beiyun M20
|
|
Receiving channel
|
1507 channel
|
|
Time To First Fix
|
cold boot
|
≤30s
|
|
Hot start
|
≤5s
|
|
Re capture
|
≤1s
|
|
RTK initialization
|
≤ 5 s
|
|
Accuracy
|
Horizontal positioning accuracy
|
Single point: 1.5mCEP
|
|
RTK：1.0 cm + 1 ppmCEP
|
|
Elevation positioning accuracy
|
Single point: 2.5mCEP
|
|
RTK：1.5 cm + 1 ppmCEP
|
|
Observation accuracy (RMS)
|
BDS
|
GPS
|
GLO
|
GAL
|
|
B1I/B1C/L1C/L1 CA/E1/G1
pseudorange
|
10cm
|
10cm
|
10cm
|
10cm
|
|
B1I/B1C/L1C/L1 CA/E1/G1
Carrier Phase
|
1mm
|
1mm
|
1mm
|
1mm
|
|
B2I/B2a/B2b/L5/E5a/E5b
pseudorange
|
10cm
|
10cm
|
10cm
|
10cm
|
|
B2I/B2a/B2b/L5/E5a/E5b
Carrier Phase
|
1mm
|
1mm
|
1mm
|
1mm
|
|
B3I/L2/G2 pseudorange
|
10cm
|
10cm
|
10cm
|
10cm
|
|
B3I/L2/G2 Carrier Phase
|
1mm
|
1mm
|
1mm
|
1mm
|
|
Speed accuracy
|
0.03m/s
|
|
Timing accuracy
|
≤20 ns
|
|
Output data
|
Baud rate
|
115200bps（default）
|
|
Output interface
|
TTL
|
|
Output Protocol
|
NMEA,RTCM3.3, BYNAV
|
|
update frequency
|
Default 1Hz（1Hz-10Hz）
|
|
Carrier phase output
|
Support, output RAWX statement
|
|
FLASH
|
built-in
|
|
Working
conditions
|
speed
|
＜550m/s
|
|
Gravitational acceleration
|
＜4g
|
|
Environment
|
working temperature
|
-40℃-85℃
|
|
Storage temperature
|
-40℃-85℃
|
|
Electrical
specifications
|
working voltage
|
3V~5.5V DC
|
|
power waste
|
＜800mW@3.3V
|
|
Physical
parameters
|
size
|
45*11.5mm
|
|
weight
|
35.8g
|
|
Connector
|
GH1.25mm 8pin
|
Table 1 PIN Function
|
NO.
|
Signal Name
|
Signal Description
|
|
1
|
VCC
|
Main power supply input, +3.3V to +5V
|
|
2
|
RXD1
|
First serial receive data pin, used for receiving serial date streams.
|
|
3
|
TXD1
|
First serial transmit data pin, used for receiving serial date streams.
|
|
4
|
SCL
|
Clock line in the l2C communication protocol, used for synchronizing data transfer.
|
|
5
|
SDA
|
Data line in the l2C communication protocol, used for bidirectional data transfer.
|
|
6
|
RXD2
|
Serial receive data pin, similar to RXD1, used for receiving another serial data stream.
|
|
7
|
TXD2
|
Serial transmit data pin, similar to TXD1, used for sending another serial data stream.
|
|
8
|
GND
|
Ground pin, used for connecting to the circuit's ground, providing the reference voltage needed for the circuit loop.
|
|
Note: Typically, VCC and GND are used for power supply, TX and RX are used for serial communication, while SCL and SDA are used for I²C communication. These interfaces allow the receiver to exchange power supply and data with external devices.
|
Packaging and Delivery：
Product Overview
The DALANG AK727 is a high-precision GNSS receiver module based on the UBLOX ZED-F9P chip, incorporating a full-system, multi-frequency RTK engine for real-time centimeter-level differential positioning. The module supports both Rover and Base Station modes, making it suitable for UAVs, autonomous vehicles, precision agriculture, and surveying.
Centimeter-Level RTK Performance
Utilizing carrier phase differential technology, the AK727 achieves static accuracy of 1 cm and dynamic accuracy of 2 cm. With an adjustable output rate of 1-10 Hz, it meets the positioning demands of high-speed moving applications.
Multi-System Satellite Support
Compatible with BeiDou, GPS, GLONASS, and Galileo navigation systems, the module significantly enhances positioning convergence speed and reliability, offering fast initialization capabilities.
Industrial-Grade Design for Challenging Environments
Featuring a built-in four-arm helical antenna and industrial-grade low-noise RF circuitry, it provides high gain and strong anti-interference performance. Integrated with an IST8310 magnetometer, it adds directional positioning support to improve overall navigation accuracy.
Broad Compatibility and Flexible Integration
Fully compatible with mainstream flight controllers like Pixhawk and APM, and supporting NMEA0183, RTCM 3.3, and UBX protocols, it facilitates easy integration and secondary development.
Key Features
-
High-Performance Positioning Core: U-blox F9P platform for stable centimeter-level accuracy in harsh environments
-
Multi-Frequency, Multi-System Support: Compatible with BDS, GPS, GLONASS, Galileo, and more for faster convergence
-
High Update Rate Output: Up to 10 Hz data output for high-dynamic applications
-
Strong Anti-Interference: Optimized RF and antenna design for stable signal reception
-
Integrated High-Precision Magnetometer: IST8310 provides heading assistance
-
Open-System Compatibility: Fully compatible with PX4, ArduPilot, and supports OEM customization
Looking for a reliable RTK solution for your UAV or high-precision positioning project? Choose the DALANG AK727 GNSS module today and experience real-time centimeter-level accuracy.
About Us
DALANG is a dedicated manufacturer of high-performance GNSS modules and RTK positioning solutions, serving industries such as UAV navigation, precision agriculture, and geospatial mapping. With a clear focus on accuracy, reliability, and integration flexibility, we support both standard and custom applications across global markets. Our product lines are engineered to meet the evolving demands of real-time positioning with support for multiple GNSS constellations, including GPS, GLONASS, BDS, and Galileo.
Our production facility spans 2,500㎡ and includes advanced SMT lines, in-house R&D labs, and full functional testing for every unit shipped. With a team of 30+ GNSS engineers, we design and manufacture over 200,000 GNSS receivers and modules annually. Certified to ISO9001:2015, and compliant with CE and RoHS standards, we follow a strict quality assurance process from prototyping through mass production. We also provide firmware updates, system integration support, and full lifecycle product documentation.
Trusted by partners in over 30 countries, DALANG delivers fast, scalable manufacturing with personalized technical support. Our streamlined collaboration model—covering inquiry, consultation, prototyping, and delivery—ensures efficiency from first contact to deployment. Whether you're sourcing off-the-shelf GNSS hardware or launching a customized solution, DALANG is your dependable partner for accurate, cost-effective positioning systems.
FAQ
1. Who are we?
We are DALANG, a specialized manufacturer of GNSS modules and RTK positioning systems based in China, with a focus on high-precision solutions for UAVs, surveying, and smart agriculture.
2. How can we guarantee quality?
All products undergo strict multi-stage quality control, including SMT production, functional testing, and 100% final inspection. We are ISO9001:2015 certified and follow international compliance standards such as CE and RoHS.
3. What can you buy from us?
You can purchase GNSS receivers, RTK modules, base stations, antennas, flight control positioning systems, and other GNSS-related components and accessories.
4. Why should you buy from us not from other suppliers?
We combine strong in-house R&D, flexible OEM/ODM support, industrial-grade quality assurance, and fast global delivery. Our expertise in GNSS RTK ensures stable, accurate, and scalable solutions tailored to your specific use case.
5. What services can we provide?
We offer OEM/ODM customization, technical consulting, firmware support, prototyping, and global after-sales service. Our team works closely with international clients to ensure efficient communication and long-term support.
