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UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs

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Model:
AK723TG
Chip:
 UM981
Working frequency band: BDS/GPS/GLONASS/GALILEO/QZSS
Baud rate: 115200bps (default)
Update frequency: 0.25Hz-50Hz (default 1Hz)

Cold start: 26s
Hot start:2s
Speed accuracy: 0.05m/s
Working voltage: 3~5.5V DC
Power consumption: 800mW@3.3V
Size: Standard version:φ42*31.2mm
          Upgraded version:φ44*40.6mm

Weight: Standard version: 13.2g
              Upgraded version: 21g

Connector: GH1.25mm 8pin
Compass:IST8310

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  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
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  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981 high-precision receiver IST8310 compass centimeter level RTK positioning accuracy multi frequency multi system GNSS performance unmanned aerial vehicle light unmanned aerial vehicle
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • UM981/IST8310 GNSS/GPS/RTK Module with INS Inertial IMU, Short-term Signal Masking Resilience for UAVs
  • Description






丨 Product Introduction


1. High data output: Supports up to 50Hz data output, suitable for high-speed mobile drone positioning, ensuring continuous and stable trajectory tracking.

2. Compatibility: Fully compatible with automatic flight control systems such as Pixhawk and APM, making it easy to integrate multiple flight platforms.

3. Built in IUD: solves the problem of positioning interruption caused by satellite signal loss of lock.

4. Compass configuration: Built in electronic compass IST8310 to enhance signal accuracy.


Specification parameters

Chip

characteristics

chip

UM981

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

NavIC L5

SBAS L1C/A

Receiving channel

1408 channel

Sensitivity

track

-167 dBm

cold boot

-148 dBm

Hot start

-157 dBm

First positionin

time TTFF

cold boot

26s

Hot start

2s

Re capture

2s

Inertial navigation accuracy

<5% x driving distance (no GNSS signal)

Accuracy

Horizontal Accuracy

Normal positioning: 1.5m CEP

RTK positioning: 0.8cm+1 ppm CEP

speed accuracy

0.05m/s

Second pulse accuracy

30ns

Output data

Baud rate

115200bps (default) [Optional: 4800-921600]

Output interface

TTL

Output Protocol

NMEA0183、Unicore

Data update frequency

100Hz (IMU Raw Data)

Default 1Hz (0.25Hz-50Hz)

Carrier phase output

Support, output RAWX statement

FLASH

built-in

Working

conditions

height

<50,000m

speed

<500m/s

Gravitational acceleration

<4g

Electrical

specifications

working voltage

3V-5.5V DC

power waste

800mW @3.3V

Physical

parameters

size

Standard version:φ42*31.2mm
Upgraded version:φ44*40.6mm

weight

Standard version: 13.2g
Upgraded version: 21g

Connector

GH1.25mm 8pin

Environment

working temperature

-35℃-80℃

Storage temperature

-40℃-85℃

Compass

Compass

IST8310(Isentek)



product mix


Standard version:


Upgraded version:

                   

                                                          Table 1 PIN Function

NO.

Signal Name

Signal Description

1

VCC

Main power input, +3.3V to 5V

2

GND

Module ground

3

TX1

UART1 output, 3.3V TTL

4

RX1

UART1 input, 3.3V TTL

5

SCL

I²C Serial Clock (IST8310)

6

SDA

I²C Serial Data (IST8310)

7

TX2

UART2 output, 3.3V TTL

8

RX2

UART2 input, 3.3V TTL





Packaging and Delivery:







 



Product Overview

The DALANG AK723TG is a next-generation RTK/INS integrated navigation module based on the UM981 chip. Utilizing the NebulasIV GNSS SoC, it integrates a high-speed floating-point processor and a dedicated RTK coprocessor, supporting 100 Hz IMU raw data output and 50 Hz positioning results. With onboard MEMS sensors and U-Fusion algorithms, it maintains continuous positioning in GNSS-denied environments such as urban canyons and tunnels.

Multi-System Support
Compatible with BDS, GPS, GLONASS, Galileo, QZSS, NavIC, and SBAS for reliable and fast positioning.

INS Integration
Onboard IMU provides <5% distance error in inertial navigation mode without GNSS signals.

Compact Design
Weighing only 13.2g with dimensions of Φ44×40.6mm, and integrated IST8310 magnetometer, ideal for weight-sensitive UAV and mobile platforms.


Key Features

  • High-Frequency Output: 100 Hz IMU data, 50 Hz positioning

  • All-System Support: 7 global navigation systems

  • INS Navigation: <5% distance error without GNSS

  • Lightweight: 13.2g for easy integration

  • IST8310 Magnetometer: Accurate heading reference

  • Industrial Temp Range: -35℃ to 80℃


    Provides continuous high-precision positioning for UAV, agriculture, and surveying. DALANG AK723T - a reliable solution signal interruptions.


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.

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