丨 Product IntroductionProduct Introduction：
The AK995 is a high-precision RTK module supporting all major GNSS systems and frequencies. Featuring the 22nm Nebula IV™ SoC with 1408 channels, it delivers 20Hz RTK positioning, enhanced by JamShield technology for fast, reliable performance in complex environments, making it ideal for drones, precision agriculture, and surveying.Features：
1.Multi-system frequency support: Compatible with satellite navigation systems (BDS, GPS, GLONASS, etc.), greatly enhancing global positioning coverage and accuracy.
2.Full-system full-frequency RTK positioning calculation: Boasts strong integration and fast initialization capabilities, ensuring positioning speed and precision across various environments.
3.20Hz data output rate: Delivers high-performance processing, adapting quickly to dynamic scenarios—ideal for applications like drones that require fast positioning updates.
4.Per-frequency-point independent tracking & 60dB narrowband anti-interference tech: Enables independent satellite signal tracking across bands, effectively boosting signal quality and positioning accuracy in complex environments.
5.Full-system full-frequency RTK engine "UGypsophila": Supports global satellite systems/bands for more precise, stable positioning, perfect for high-precision scenarios like professional surveying and mapping.
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
|
|
Working
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)
|
0.03m/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 / USB
|
|
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
|
5V DC
|
|
power consumption
|
800mW
|
|
Physical
parameters
|
size
|
42*29*13mm
|
|
weight
|
24.4g
|
|
Housing material
|
aluminium
|
|
connector
|
TYPE-C/GH1.25mm 6pin
|
|
Connector
|
SSMB
|
|
Environment
|
operation temperature
|
-35℃-80℃
|
|
storage temperature
|
-40℃-95℃
|
Packaging and Delivery：
