K825 GNSS Module-OEM Board-ComNav Technology Ltd.

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Features

Dual-antenna Design for Robust Heading and Positioning
Full-constellation multi-frequency tracking
Support L-Band and PPP
Support GNSS+INS navigation
Surface-mounted design and small size for integration
High-performance floating-point arithmetic
Industry-leading low power consumption
Internal adaptive anti-interference algorithm

Robust positioning and heading

The K825 is designed with dual-antenna that delivers high-precision positioning and heading information for various unmanned systems.

Easy to integrate

The K825 is a 30mm×40mm×3.2mm module with surface-mounted design and is ideal for users to integrate. The power consumption is lower to 1.6W .

INS+GNSS navigation

With up to 20HZ IMU data update rate and inertial navigation fusion algorithm, K825 can provide continuous and high-quality positioning data in harsh environments such as tunnels, buildings and forests.

Performance

Physical

Communications

Performance

Signal Tracking
GPS: L1C/A, L2P, L2C, L5
BDS-2: B1I, B2I, B3I
BDS-3: B1I, B3I, B1C, B2a, B2b
GLONASS: G1, G2, G3
Galileo: E1, E5b, E5a, E5 AltBoC, E6c
QZSS: L1C/A, L2C, L5, L1C
SBAS: L1C/A
IRNSS: L5
L-Band
Cold Start
< 30s
Hot Start
< 10s
Signal reacquisition
< 1s
RTK Initialization time
< 5s
Initialization reliability
> 99.9 %
Velocity accuracy
4 g
Time Accuracy
20 ns
Overload
15g
Azimuth
(0.15/R)°
Roll or Pitch
(0.3/R)°
Post Processing
2.5 mm + 1 ppm Horizontal
5 mm + 1 ppm Vertical
Single Baseline RTK
8 mm + 1 ppm Horizontal
15 mm + 1 ppm Vertical
DGPS
<0.4 m RMS
SBAS
1 m 3D RMS
Standalone
1.5m 3D RMS

Physical

Size (L × W × H)
30 mm × 40 mm × 3.2 mm
Weight
10 g
Hardware interface
LGA 60 pin
Power consumption
1.6 W (Anti-interference off)
Input voltage
+3.3 V ± 5% DC
Storage temperature
-55 °C to + 95 °C
Working temperature
-40 °C to + 85 °C
LNA Power External
+3.3V ~ +5V ± 5%VDC @ 0-100mA
LNA Gain
20 ~ 40dB (suggested)
Impedance Matching
Wiring 50 Ω impedance matching

Communications

LVTTL ports
3
SPI
1
Event Markers input
2
Pulse Per Second (PPS) output
1
Indicator pins show the working status
3
Correction data I/O
RTCM 2.X, 3.X, CMR(GPS only), CMR+(GPS only)
Position data output
- ASCII: NMEA-0183 GGA, GSA, GSV, RMC, HDT, VHD, ZDA, VTG, GST, GLL;
- ComNav Binary
- Position data output rate: 1 Hz, 2 Hz, 5 Hz, 10 Hz, 20Hz