
丨 Product Introduction
1. Advanced chip: Based on UM980, using Nebula IVM RF baseband and GNSS SoC chip.
2. Multi system compatibility: Receive multiple satellite signals such as BDS to increase coverage and accuracy.
3. Fast positioning: Real time RTK, high precision in seconds, suitable for complex environments.
4. Strong anti-interference: independent tracking, 60 decibel narrowband anti-interference, accurate positioning.
丨 Specification parameters
|
Chip
characteristics
|
chip
|
UM980
|
|
working frequency
|
BDS: B1I B2I B3I B1C B2a B2b
GPS: L1 C/A L1C L2P (Y) L2C L5
GLONASS: L1 L2
Galileo: E1 E5a E5b E6
QZSS: L1 L2 L5 L6
|
|
Receiving channel
|
1408 channel
|
|
Accuracy
|
Single point positioning (RMS)
|
Plane: 1.5m
|
|
Elevation: 2.5m
|
|
DGPS(RMS)
|
Plane: 0.4m
|
|
Elevation: 0.8m
|
|
RTK(RMS)
|
Flat: 0.8cm+1ppm
|
|
Elevation: 1.5cm+1ppm
|
|
Observation accuracy (RMS)
|
BDS
|
GPS
|
GLONASS
|
Galileo
|
|
B1I/B1C/L1C/L1 C/A/E1/G1 pseudorange
|
10cm
|
10cm
|
10cm
|
10cm
|
|
B1I/B1C/L1C/L1 C/A/E1/G1 Carrier Phase
|
1mm
|
1mm
|
1mm
|
1mm
|
|
B3I/L2P(Y)/L2C/G2 pseudorange
|
10cm
|
10cm
|
10cm
|
10cm
|
|
B3I/L2P(Y)/L2C/G2
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
|
|
Time accuracy (RMS)
|
10 ns
|
|
Speed accuracy (RMS)
|
0.03 m/s
|
|
Start Time
|
cold boot
|
<10s
|
|
Initialization time
|
<5s (typical value)
|
|
Initialize reliability
|
> 99.9%
|
|
Output data
|
Baud rate
|
115200bps (default) [Optional: 4800-921600]
|
|
Output interface
|
TTL
|
|
Output Protocol
|
NMEA0183、RTCM 3.3
|
|
update frequency
|
1Hz-20Hz (default 1Hz)
|
|
Differential
data
|
Differential data
|
RTCM 3.3/3.2/3.1/3.0
|
|
Carrier phase output
|
Support, output RAWX statement
|
|
FLASH
|
built-in
|
|
Electrical
specifications
|
working voltage
|
3~5.5V DC
|
|
power waste
|
800mW
|
|
Physical
parameters
|
size
|
71.1*45.7*3.6mm
|
|
weight
|
15g
|
|
Connector
|
2x10 pin header with 2.0mm pitch
|
|
Antenna connector
|
MCX Straight head(customizable)
|
|
Environment
|
working temperature
|
-35℃-80℃
|
|
Storage temperature
|
-40℃-95℃
|
丨 product mix
Table 1 PIN Functionality
|
No.
|
Signal Name
|
Signal Description
|
|
1
|
NC
|
No connection internally
|
|
2
|
VCC
|
Power input, DC+5V
|
|
3
|
NC
|
No connection internally
|
|
4
|
RX3
|
Serial port 3 receive, can be reused as CAN RXD, 3.3VTTL
|
|
5
|
RESET
|
System reset, active low
|
|
6
|
NC
|
No connection internally
|
|
7
|
EVENT
|
Event trigger
|
|
8
|
NC
|
No connection internally
|
|
9
|
TX3
|
Serial port 3 transmit, can be reused as CAN TXD, 3.3VTTL
|
|
10
|
GND
|
Ground
|
|
11
|
TX1
|
Serial port 1 transmit, 3.3VTTL
|
|
12
|
RX1
|
Serial port 1 receive, 3.3VTTL
|
|
13
|
GND
|
Ground
|
|
14
|
TX2
|
Serial port 2 transmit, 3.3VTTL
|
|
15
|
RX2
|
Serial port 2 receive, 3.3VTTL
|
|
16
|
GND
|
Ground
|
|
17
|
PVT_STAT
|
PVT positioning status, active high. Outputs high level when the module is able to position, and low level when not positioning
|
|
18
|
GND
|
Ground
|
|
19
|
PPS
|
Pulse per second
|
|
20
|
RTK-STAT
|
RTK status indicator, light on when RTK fixed solution
|
Table 2 Interface Characteristics
|
No.
|
Name
|
Symbol
|
Min
|
Typical
|
Max
|
Unit
|
|
1
|
Main Power Supply
|
Vcc
|
2.7
|
5.0
|
5.5
|
V
|
|
2
|
RF Port Supply Voltage
|
VRF
|
3.0
|
3.1
|
3.3
|
V
|
|
3
|
Input High Level
|
VIH
|
2.0
|
|
|
V
|
|
4
|
Input Low Level
|
VIL
|
|
|
0.7
|
V
|
|
5
|
Output High Level
|
VOH
|
3.2
|
|
|
V
|
|
6
|
Output Low Level
|
VOL
|
|
|
0.1
|
V
|
|
7
|
Main UART Baud Rate - Baud
|
Baud
|
|
115200
|
|
bps
|
|
8
|
Differential Baud Rate - Baud
|
Baud
|
|
115200
|
|
bps
|
Packaging and Delivery:

DALANG AK315 FPV GPS Module (Based on UM980 Chip)
High-Precision GNSS Engine for Drones and Agriculture
The DALANG AK315 FPV GPS Module is a multi-band, multi-system GNSS board based on the UM980 chip, designed for centimeter-level accuracy, supporting GPS, BDS, GLONASS, and Galileo. This powerful RTK solution is ideal for UAV navigation, smart agriculture, and geomatics missions.
High-Frequency RTK Engine for Real-Time Positioning
With its fast multi-band RTK engine powered by the UM980 chip, the AK315 delivers real-time corrections and stable GNSS data across varied terrains. Whether mounted on an autonomous drone or a tractor, this FPV module ensures precise position tracking for accurate workflow requirements.
Designed for Open-Source Flight Controllers and Integrators
Fully compatible with open-source systems like ArduPilot, PX4, and custom builds, the AK315 FPV Drone GPS Module supports flexible deployment and long-term scalability. It is the perfect board for UAV developers and integrators seeking a stable FPV receiver module.
Reliability in Harsh Environments
Thanks to the robust anti-interference performance and high signal sensitivity of the UM980 chip, the AK315 excels in urban, mountainous, or foliage-heavy settings. It is a proven FPV GPS module for operators needing stable GNSS output in real-world conditions.
Product Advantages
-
UM980 Chip-based with Multi-band GNSS support for maximum accuracy
Leveraging the UM980 chip and supporting L1/L2 bands and multiple constellations, this FPV GPS module enables real-time centimeter-level positioning—a must-have FPV receiver for professional-grade tracking developers.
-
Optimized for open-source and OEM use
Fully compatible with F4/F7 flight controllers and open-source systems, the AK315 is one of the most versatile FPV drone GPS modules on the market.
-
Stable performance in challenging environments
Whether flying over dense forests or operating in interference-prone areas, this FPV module provides reliable RTK correction and consistent tracking—a dependable FPV module for demanding terrains.
-
High performance, low power, easy integration
The AK315's compact size and low power consumption make it ideal for drones or AGV systems—a compact FPV receiver module suited for high-volume applications.
Need more capable UAV or agricultural systems?
Upgrade your flight control module projects with real-time RTK performance—choose the DALANG AK315 GNSS board based on the UM980 chip today.
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.