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GPS GNSS module K922
GLONASSQZSSADR

GPS GNSS module - K922 - ComNav Technology Ltd. - GLONASS / QZSS / ADR

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Characteristics

Options: GPS, GLONASS, GALILEO, QZSS, BeiDou, SBAS, ADR

Description

Overview

The K922 GNSS module, powered by the QC7820 SoC, provides centimeter-level positioning with dual-antenna heading and an onboard IMU. It supports full-constellation tracking, advanced anti-interference technologies and industrial CAN/Ethernet interfaces, suited for precision agriculture, driving training, UAVs, CORS and digital construction.

Key features

Support for GPS, BDS-2, BDS-3, GLONASS, GALILEO, NAVIC, QZSS and SBAS
Integrated RF & BB high-precision GNSS SoC
Dual-core CPU architecture
Dual-antenna heading support
PPP-B2b and PPP-HAS service support
GNSS+INS fusion for continuous navigation
Industrial interfaces: UART, CAN (optional), Ethernet, I2C, SPI, PPS

Performance

Signal tracking: GPS L1C/A, L2P, L2C, L5, L1C*; BDS-2 B1I/B2I/B3I; BDS-3 B1I/B3I/B1C*/B2a/B2b*; GLONASS G1/G2/G3*; Galileo E1/E5a/E5b/E5 AltBoC*/E6c*; QZSS L1C/A/L2C/L5/L1C*; SBAS* L1C/A, L5; NAVIC* L5
Cold start: < 20 s (with acceleration capture module)
Hot start (with RTC): < 10 s (typical)
Signal reacquisition: < 1 s
RTK initialization time: < 5 s (D < 10 km)
Initialization reliability: > 99.9 %
Velocity accuracy: ≤ 0.02 m/s
Time accuracy: 20 ns
PPP convergence time: < 15 min
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: 1.5 m horizontal; 3 m vertical
PPP: 0.1 m horizontal; 0.2 m vertical
ADR position error: < 3% of distance travelled without GNSS
Heading accuracy: 0.15° / 1 m baseline

Physical

Size (W × L × H): 16 mm × 21 mm × 2.5 mm
Weight: 1.8 g
Hardware interface: LGA 48 pin
Power consumption: 0.5 W
Input voltage: +3.3 V ±5% DC
Operating temperature: -40 °C to +85 °C
Storage temperature: -55 °C to +125 °C
External LNA power: +3.3 V ~ +5 V ±5% VDC @ 0–100 mA
LNA gain: 20–35 dB (suggested)
Impedance match: 50 Ω

Communications

UART: 2 ports
UART3 or CAN (optional): 1
PPS: 1
EVENT: 1
I2C: 1
SPI: 1
ETH: 1 (pins 12, 13, 25, 26)
Correction data I/O: RTCM 2.x, 3.x
Position data output: ASCII (NMEA-0183) GGA, GSA, GSV, RMC, HDT, VHD, ZDA, VTG, GST, GLL; Binary: ComNav Binary
Position output rate: 1, 2, 5, 10, 20* Hz, 50* Hz
IMU data rate: 1, 2, 5, 10, 20*, 50*, 100* Hz

Inertial sensor

Gyroscope: range ±125°/s; bias repeatability 0.5°/s; bias stability 5°/h; ARW 0.12°/√h
Accelerometer: range ±2 g; bias repeatability 20 mg; bias stability 50 μg; VRW 0.07 m/s/√h

Technical specifications

Model: K922
SoC: QC7820
Onboard IMU: yes (GNSS/INS fusion)
Supported constellations: GPS, BDS-2, BDS-3, GLONASS, GALILEO, NAVIC, QZSS, SBAS
Primary interfaces: UART, CAN (optional), Ethernet, I2C, SPI, PPS
Dimensions & weight: 16 × 21 × 2.5 mm; 1.8 g
Operating voltage & power: +3.3 V ±5% DC; 0.5 W
Operating temperature: -40 °C to +85 °C

Note

Items marked with * are supported only by specific firmware versions.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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