Navisys GM-M02 L1 + L5 Dual-Band GNSS Module (1.5m Accuracy, 135 Channels and 10Hz Update Rate)

The NaviSys GM-M02 is built on Airoha’s (a subsidiary of MediaTek) single-chip dual-band AG3335 chip, utilizing 12 nm technology. This advanced design supports 135 channels and both L1 and L5 dual bands.

The dual-band capability allows the GM-M02 to receive signals from both L1 and L5 band satellites, effectively canceling out errors introduced when signals pass through the ionosphere and troposphere. This results in higher accuracy compared to single-band GNSS, with the GM-M02 achieving precision within 1.5 meters.

The 135 channels enable the GM-M02 to utilize more satellites for faster acquisition.

The GM-M02 supports smart jammer detection across GPS, GLONASS, Galileo, and BEIDOU bands. This feature enables real-time monitoring and identification of interference signals, ensuring high-precision and reliable positioning data even in challenging environments. It is particularly valuable for applications like drone navigation, vehicle tracking, and security monitoring, where accurate positioning is crucial despite potential interference.

In addition to its excellent GNSS engine, the GM-M02 boasts ultra-low power consumption at 94 mA and supports an update rate of up to 10 Hz.

GM-M02 module enables rapid deployment for AVL, timing, and other location-based applications. It supports various electrical interfaces, such as USB, RS232, and UART TTL. 

The GM-M02 integrates a smart antenna, LED, and all necessary circuits for high-quality positioning across GPS, GLONASS, GALILEO, and BEIDOU (G3B). This integration makes it a plug-and-play all-in-one GNSS module, allowing for fast adoption and high-yield production.

Navisys "NaviViewerAh" Tool

The manufacturer Navisys offers a user-friendly tool for easy configuration and diagnostics of the GR-M02 GNSS receiver. The 2 screenshots below display the satellite signal bars for L1 and L5, respectively.

Receiver Specifications

GNSS receiver type

• 135-channel Airoha AG3335 engine

L1:

• 1602 MHz: GLONASS: L1OF

• 1575.42 MHz:

• GPS & QZSS: L1 C/A

• SBAS: L1

• QZSS L1 SAIF

• Galileo: E1 (E1B+E1C)

• 1561.098 MHz: BEIDOU B1I

L5:

• 1176.45 MHz:

• GPS & QZSS: L5

• Galileo: E5a

• BEIDOU: B2a

Horizontal Position Accuracy

• Autonomous: 1.5m (L1+L5 dual-band)

(CEP, 50%, 24hr static, -130dBm)

Vertical Position Accuracy

• Autonomous: 2.25m (L1+L5 dual-band)

(CEP, 50%, 24hr static, -130dBm)

Velocity Accuracy

• <0.05 m/s (speed)

(50%@30 m/s)

Accuracy of PPS Time Pulse

• ±10 ns clear sky, 1-sigma

Time To First Fix

• Autonomous (50% -130dBm)

• Hot start: 1 sec

• Warm start: 24 sec

• Cold start: 24 sec

Sensitivity

• -148 dBm (acquisition)

• -165 dBm (tracking)

Measurement Data Output

• Max. update rate: 10 Hz (default 1 Hz)

• NMEA output protocol: Ver. 3.01 and 4.10

• UART default baud rate: 115200 bps, (N-8-1)

• Datum: WGS-84

• Default: GGA, GSA, GSV, RMC, VTG

Max. Altitude

• < 50,000 m

Max. Velocity

• < 500 m/s or 1,852 km/hr

SBAS Support

• WAAS, EGNOS, MSAS, GAGAN

• QZSS: SLAS (Sub-meter Level Augmentation) support in Japan Only

Dynamics

• < 4g

Power Consumption

• 94 mA / average tracking (RS232, 77 SVs used in fix)

Power Supply

• 3.3 ~ 5 VDC (TTL, RS232)

• 4.5 ~ 5.5 VDC (USB)

Dimension

• 30 (W) x 30 (L) x 11.8 (H) mm

Operating Temperature

• -40°C to +85°C

Storage Temperature

• -40°C to +85°C

• The pin definition of the GM-M02U connector is proprietary. Please use the included USB data cable to connect it to your computer.

Package Content:

• Navisys GM-M02 GNSS Module x 1

• USB adapter cable for Navisys Module x 1