Bynav

M20D GNSS Module

Category： Bynav
INQUIRY EMAIL

Product Description:

M20D GNSS High-Precision Module

Dual-antenna Tri-vector Anti-jamming

Brief Introduction

The M20D is a high-precision GNSS positioning and dual-antenna heading module comprising 48 pins in a LGA package. The module incorporates a high-precision measurement engine, a navigation engine and a functional safety engine. The module is equipped with anti-jamming capabilities of 65 dBc narrowband and full-constellation multi-frequency RTK solutions, enabling it to function reliably in challenging environments where satellite signal interference or outages may occur. It is capable of providing continuous, real-time, and high-precision positioning data. Such applications include L4 automated driving, drones, intelligent robots, precision agriculture, surveying, mapping, and so forth.

Technological Advantage

• Full-constellation Multi-frequency Positioning & Heading

The device is equipped with the capacity to support BDS/GPS/GLONASS/Galileo/QZSS full-constellation multi-frequency high-precision RTK positioning and a dual-antenna heading solution. The Bynav REAL (Ransac Enhanced Advanced Location) GNSS positioning engine and the dual-antenna heading engine have an integrity monitoring algorithm which serves to enhance fault tolerance and fixed solution rate under conditions of multipath and interference in urban environments.

• High-performance Multiple Interference Suppression

SAIF (Smart Advanced Interference Defense) is a high-performance multiple interference suppression technology with high AD quantization bits. It is built in and capable of handling different interferences, including single-frequency, multitone, sweeping, pulse, and narrowband, with an interference-signal ratio of 65 dBc. SAIF can effectively address vehicle anti-tracking equipment, radar/airport signal towers, and other sources of interference, thereby enhancing the availability and integrity of high-precision positioning in vehicle scenarios.

• Functional Safety ASIL B

It supports L-band* SBAS signal reception, enabling high-precision positioning in environments where traditional differential services or cellular services are not available. It supports BeiDou-3 B2b PPP* and E6 HAS* solutions, fully utilising the four four-frequency signals from BeiDou and Galileo to significantly improve the speed of PPP convergence and PPP convergence speed and increase the availability of high-precision positioning.

Feature

» Independent Intellectual Property Rights

» 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 gPTP Time Synchronization

» AP Partition Design Ensures Stable and Reliable OTA Upgrades

» Support System Self-check and Fault Diagnosis*

Application

Intelligent Driving	Intelligent Agriculture

Drone	Electronic Driving Test

USV

Performance
Constellation:	GPS, BDS, GLO, GAL, QZSS, NavIC
Number of Channel:	1500
Tracking
Master Antenna
BDS	B1I, B2I, B1C, B2b (PPP)
GPS	L1 C/A, L1C*, L2
GLO	G1, G2
GAL	E1, E5b
QZSS	L1 C/A, L1C*, L2
Slave Antenna
BDS	B1I, B2I, B1C*
GPS	L1 C/A, L1C*, L2C
GLO	G1, G2
GAL	E1, E5b
QZSS	L1 C/A, L1C*, L2
Interface
UART	×3
SPI*	×1
CAN FD	×1
RMII	×1
Horizontal Positioning Accuracy (RMS)^1,2
Single Point	1.5 m
RTK	1.0 cm + 1 ppm
Vertical Positioning Accuracy (RMS)^1,2
Single Point	2.5 m
RTK	1.5 cm + 1 ppm
Heading Accuracy (RMS)^1,2	0.2° /1m baseline
Max. Output Rate
Dual-antenna GNSS Observation	10 Hz
Dual-antenna GNSS Position & Heading⁹	10 Hz
Time To First Fix
Cold Start ^3,5	≤ 30 s
Hot Start ^4,5	≤ 5 s
RTK Initialization¹	≤ 5 s
Re-acquisition Time	≤ 1 s
Timing Accuracy (RMS)⁷	≤ 20 ns
Velocity Accuracy⁶	0.03 m/s
RTK Solution Delay	≤ 50 ms

Mechanical and Electrical
Size	16.0 x 21.0 x 2.6 mm
Package	48 pin LGA
Power Consumption⁸	530 mW
Power Supply Range	3.0~3.6 V

Environment and Certification
Operation Temperature¹⁰	-40 ℃ ~ +85 ℃
Storage Temperature¹¹	-55 ℃ ~ +150 ℃
Humidity	95% Non-condensing
Vibration	JESD22-B103
Shock	JESD22-B110
IATF 16949*
ISO 26262 ASIL B*
AEC-Q104*

Note:

1. Typical value. Performance will be affected by GNSS status, satellite position, baseline length, multipath and other interferences;

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

3. Typical value. There is no almanac, ephemeris and approximate position or time. or time.

4. Typical value. Almanac, ephemeris and approximate position or time will be preserved；

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

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

7. Optional. RF and antenna bias are not included.
8. Typical value. Antenna and peripheral power not included；
9. 20Hz is supported in special firmware;
10. There is an optional temperature range of -40℃ ~105℃;
11. There is an optional temperature range of -40℃ ~150℃;
* Optional, supported in dedicated firmware.