ByNav M20D RTK Heading GNSS/INS Module (Dual-antenna Tri-vector Anti-jamming, 1 cm position accuracy and 0.2 ° direction accuracy)

The M20D is a high-precision GNSS positioning and dual-antenna heading module. It has 48 pins with a package of LGA. The high-precision measurement engine, navigation engine, and functional safety engine are integrated into the module. It supports anti-jamming of 65 dBc narrowband and full-constellation multi-frequency RTK solutions to deal with harsh environments such as satellite signal interference and outages, and can provide continuous, real-time, and reliable high-precision positioning. It can be applied to L4 automated driving, drones, intelligent robots, precision agriculture, surveying, mapping, etc.

Features:

• 22nm Process GNSS SoC

• Support Tri-vector RTK (Master and Slave Antenna Positioning + Dual-antenna Heading)

• Support BDS-3, B2b (PPP)

• High-performance Anti-jamming

• Support Ethernet Port, Embedded SDK Differential Account, Support PTP Time Synchronization

• AP Partition Design Ensures Stable and Reliable OTA Upgrades

• Support System Self-check and Fault Diagnosis

Tech Advantages 

Full-constellation Multi-frequency Positioning & Heading

It supports BDS/GPS/GLONASS/Galileo/QZSS full-constellation multi-frequency high-precision RTK positioning and dual-antenna heading solution. Bynav REAL (Ransac Enhanced Advanced Location) GNSS positioning engine and dual-antenna heading engine have an integrity monitoring algorithm, which improves fault tolerance and the fixed solution rate under multipath and interference conditions in urban environments.

High-performance Multiple Interference Suppression

SAIF (Smart Advanced Interference Defense), the high-performance multiple interference suppression technology with high AD quantization bits, is built-in and capable of handling different interferences such as single-frequency, multi-tone, sweeping, pulse, and narrowband with an interference-signal ratio of 65 dBc. It can deal with vehicle anti-tracking equipment, radar/airport signal towers, etc., and greatly improves the availability and integrity of high-precision positioning in vehicle scenarios.

Technical Spec:

GNSS System

• Constellations: GPS, BDS, GLONASS, Galileo, QZSS

• Number of Channels: 1500

GNSS Band Support

• Master Antenna:

• BDS: B1I, B2I, B1C*, B2b (PPP)*

• GPS: L1 C/A, L1C*, L2

• GLONASS: G1, G2

• Galileo: E1, E5b

• QZSS: L1 C/A, L1C*, L2

• Slave Antenna:

• BDS: B1I, B2I, B1C*

• GPS: L1 C/A, L1C*, L2C

• GLONASS: G1, G2

• Galileo: E1, E5b

• QZSS: L1 C/A, L1C*, L2

Interface

• UART: x4

• SPI: x1*

• CAN FD: x1

• RMII: x1

Positioning Accuracy (RMS)

• Horizontal Accuracy:

• Single Point: 1.5 m

• RTK: 1.0 cm + 1 ppm

• Vertical Accuracy:

• Single Point: 2.5 m

• RTK: 1.5 cm + 1 ppm

• Heading Accuracy:

• 0.2° / 1 m baseline

Max. Output Rate

• Dual-antenna GNSS Observation: 10 Hz

• Dual-antenna GNSS Position & Heading: 10 Hz

Time to First Fix

• Cold Start: 30 s

• Hot Start: 5 s

• RTK Initialization: 5 s

• Re-acquisition Time: ≤ 1 s

• Timing Accuracy (RMS): ≤ 20 ns

• Velocity Accuracy: 0.03 m/s

• RTK Solution Delay: 50 ms

Mechanical and Electrical

• Size: 16.0 × 21.0 × 2.6 mm

• Package: 48-pin LGA

• Power Consumption: 530 mW

• Power Supply Range: 3.0 V ~ 3.6 V

• Weight: 1.75 g

Environment and Certification

• Operating Temperature: -40°C to +85°C

• Storage Temperature: -40°C to +105°C

• Humidity: 95% Non-condensing

• Vibration Standard: JESD22-B103

• Shock Standard: JESD22-B110

• Certifications:

• IATF 16949

• AEC-Q104*

Note:

1. Typical value. Performance will be affected by GNSS status, satellites’ location, baseline length, multipath, and other interference.

2. Using a 1 km baseline and a receiver with good antenna performance, without considering possible errors due to antenna phase center offset.

3. Typical value. The time taken from power-on to the first output of a valid single-point position after clearing ephemeris/almanac/coarse position and time information.

4. Typical value. The time taken from power-on to the first output of a valid single-point position when the receiver has stored valid ephemeris/almanac/coarse position and relatively accurate time information (with an error of less than 5 minutes). The special firmware supports a 3-second hot start, but the firmware does not support the network port.

5. -130 dBm and more than 12 satellites are available.

6. Open sky without any obstruction, 99% @ static.

7. Optional. Bias caused by RF and antenna is not included.

8. Typical value. Power of antenna and peripherals is not included.

9. 20 Hz is supported in special firmware.

10. There is an optional temperature range of -40°C to +105°C.

*Optional, supported in special firmware.