丨 Product IntroductionProduct Introduction：
The AK992 module employs a high-performance Septentrio mosaic G5 chip to achieve centimeter-level RTK positioning, supporting multi-frequency, multi-constellation GNSS signals. Its aluminum casing offers superior heat dissipation, EMI shielding, and mechanical protection, making it ideal for demanding applications such as drones, autonomous driving, and precision agriculture in harsh environments. Features：
1.Multi-system frequency support: Compatible with satellite navigation systems like BDS, GPS, GLONASS, Galileo, etc., greatly enhancing global positioning coverage and accuracy.
2.Dual RTK technology: Leverages dual RTK engines and dual antenna inputs to improve signal processing redundancy and stability, significantly boosting positioning reliability and precision.
3.20Hz data output rate: Boasts high-performance processing capabilities, adapting quickly to dynamic environments—ideal for scenarios (e.g., drones) requiring fast positioning updates.
4.Compatibility with Pixhawk/APM flight control systems: Features excellent system integration, enabling seamless connection with mainstream flight control platforms to lower application barriers.
5.Industrial-grade low-noise RF circuit: Delivers strong signal processing capabilities, effectively suppressing multipath interference to ensure signal clarity and positioning accuracy.
丨 Product Structure
PIN Foot Function
|
NO.
|
signal name
|
Signal Description
|
|
1
|
VCC
|
Power input, DC+5V
|
|
2
|
GND
|
grounding
|
|
3
|
RX1
|
Main serial port (COM1) data transmission, output NMEA0183 format positioning results when configured as "mobile station", and output RTCM2. x/3. x format differential data stream when configured as "reference station".
|
|
4
|
TX1
|
Main serial port (COM1) data reception, configure command input port.
|
|
5
|
RX2
|
COM2 output interface
|
|
6
|
TX2
|
COM2 differential serial port (COM2) data input, only valid when configured as "mobile station", accepts RTCM2. x/3. x format differential data input.
|
|
7
|
TYPE-C interface
|
COM3 output interface
|
|
Chip
characteristics
|
Chip
|
mosaic-G5 P3H
|
|
Working mode
|
GPS: L1C/A, L1C, L2C，L2PY, L5
GLONASS: L1C/A, L2CA, L2P, L3 CDMA
BDS: B1I, B1C, B2a, B2I,B2b, B3I
Galileo:E1, E5a, E5b, E6
QZSS: L1C/A, L1C/B, L2C, L5,L68
|
|
Receiving channel
|
789 channels (synchronized tracking across all constellations)
|
|
Accuracy
|
RTK
|
Horizontal accuracy: 0.6cm+0.5ppm
|
|
Vertical accuracy: 1cm+1ppm
|
|
single-point
|
Horizontal accuracy: 1.2m
|
|
Vertical accuracy: 1.9m
|
|
DGNSS
|
Horizontal accuracy: 0.4m
|
|
Vertical accuracy: 0.7m
|
|
GNSS attitude accuracy
|
When the antenna spacing is 1 meter: heading accuracy is 0.15 °,
roll/pitch accuracy is 0.25 °
|
|
When the antenna spacing is 5 meters: heading accuracy is 0.03 °, roll/pitch accuracy is 0.05 °
|
|
time accuracy
|
PPS resolution: 1.4ns
|
|
Event accuracy:<3 ns
|
|
Speed accuracy (RMS)
|
0.03m/s
|
|
First positioning time TTFF
|
cold start
|
＜35s
|
|
hot start
|
＜10s
|
|
Re capture
|
<1s
|
|
track
|
20dB-Hz
|
|
gather
|
30dB-Hz
|
|
initialization time
|
7s
|
|
Output data
|
Baud rate
|
115200bps (default) [Optional: 4800-921600]
|
|
output interface
|
TTL/USB
|
|
Output Protocol
|
NMEA 0183, v2.3, v3.03, V4.0
|
|
Data update rate
|
1-20Hz (default 1Hz)
|
|
Differential data
|
RTCM3. x (including MSM)
|
|
Carrier phase output
|
Support, output RAWX statement
|
|
FLASH
|
built-in
|
|
Electrical
specifications
|
working voltage
|
5V DC
|
|
power consumption
|
<800mW
|
|
Physical
parameters
|
size
|
42*29*13mm
|
|
weight
|
24.8g
|
|
casing
|
aluminium
|
|
connector
|
TYPE-C/ GH1.25mm 6pin
|
|
Connector
|
SSMB
|
|
Environment
|
operation temperature
|
-35℃-80℃
|
|
storage temperature
|
-40℃-85℃
|
Packaging and Delivery：
