ER-GM-4B0 Full System Full Frequency Point RTK Positioning Module

Introduction

ER-GM-4B0 Full System Full Frequency Point RTK Positioning Module is the world’s smallest high-precision positioning module based on the Nebulas-II high-precision SoC chip. It supports BDS B1/B2/B3, GPS L1/L2/L5, GLONASS L1/L2, Galileo E1/E5a/ E5b, QZSS L1/L2/L5 and other satellite signals.

The product supports combined navigation of narrow-band anti-jamming and inertial navigation equipment, and its applications are mainly for light robots, GIS information collection, intelligent driving, unmanned aerial vehicles, etc.

ER-GM-4B0 uses a single Nebulas-II baseband chip and a single high-precision RF chip, with the highest integration in the industry. It has realized the world’s first full-system full-frequency RTK surface-mount module in a 30x40x4mm volume, which can significantly reduce the terminal volume.

New generation Nebulas-II SoC chip

ER-GM-4B0 uses a new generation full-system multi-core high-precision SoC chip-Nebulas-II. This chip is based on the mature Nebula baseband chip core technology, supports 432 channels, built-in broadband ADC and anti-interference unit, integrates two 600MHz ARM processors and dedicated high-speed floating-point arithmetic processors to provide more powerful satellite navigation signal processing ability.

Full system full frequency RTK engine

ER-GM-4B0 uses a full system full-frequency point RTK engine, which can simultaneously process the multi-frequency observation data of satellite systems such as BDS, GPS, GLONASS, GALILEO, etc., making full use of the unique three-frequency of BDS, GPS, and Galileo satellite systems.

The advantages significantly improve the initialization speed, measurement accuracy, and reliability of RTK in difficult environments such as urban blocks and shades, and achieve long-baseline centimeter-level RTK positioning.

Gypsophila RTK processing technology

The new generation of Gypsophila RTK processing technology makes full use of the high-performance data sharing function and ultra-simplified operating system in the Nebulas-II chip to fully optimize the multi-dimensional RTK matrix pipeline calculation. The RTK processing capacity is increased by more than 80% and the stability is achieved. 30 More than one RTK positioning solution and re-acquisition time within 1s.

Autonomous MEMS Integrated Navigation

ER-GM-4B0 integrates a 6-axis MEMS chip and uses a mature and reliable U-Fusion integrated navigation algorithm, which can effectively solve problems such as the interruption of positioning results caused by satellite signal loss of lock, and further optimizes the determination in complex environments such as buildings, tunnels, and viaducts. The positioning of the output to the output greatly improves the continuity and reliability of the output data.

Features

30×40mm industry’s smallest full system multi-frequency high-precision positioning directional surface-mount module

New Nebulas-II high-performance SoC chip

Full system multi-frequency RTK

Supports up to 20Hz data output rate

Integrated 6-axis MEMS chip, autonomous integrated navigation

Advanced multipath suppression technology

Centimeter-level high-precision RTK positioning

Serial, SPI, 1PPS, Event and other physical interfaces

Support RTC hot start

RTCM format adaptive recognition

Applications

Drones, robots

Smart driving test

Precision agriculture

Specifications

Aisle	432 channels based on Nebulas-II chip
Frequency	BDS B1/B2/B3, GPS L1/L2/L5, GLONASS L1/L2, Galileo E1/E5b/E5a
Single point positioning (RMS)	Plane: 1.5m  Elevation: 3.0m
DGPS (RMS)	Plane: 0.4m  Elevation: 0.8m
RTK (RMS)	Plane: 1.0cm+1ppm  Elevation: 1.5cm+1ppm
Hot start time	<10s
Cold start time	<25s
Recapture time	<1s
Initialization time	<5s (typical value)
Initial reliability	>99.9%
Differential data	RTCM 2.X/3.X CMR
Data format	NMEA-0183, Unicore
Data update rate	20Hz
Positioning update rate	20Hz
Timing accuracy (RMS)	20ns
Orientation accuracy (RMS)	0.03m/s
Inertial navigation accuracy	<5%×driving distance (no GNSS signal)
Observation accuracy (RMS)	BDS	GPS	GLONASS	Galileo
B1/L1 C/A/E1 code	10cm	10cm	10cm	10cm
B1/L1/E1 carrier phase	1mm	1mm	1mm	1mm
B2/L2P(Y)/L2C/E5b code	10cm	10cm	10cm	10cm
B2/L2P(Y)/L2C/E5b carrier phase	1mm	1mm	1mm	1mm
B3/L5/E5a code	10cm	10cm	10cm	10cm
B3/L5/E5a carrier phase	1mm	1mm	1mm	1mm
Physical properties
Size	30×40×4mm
Weight	9.2g
Operating temperature	-55°C~+85°C
Storage temperature	-55°C~+95°C
Humidity	95% non-condensing
Vibration	GJB150.16-2009, MIL-STD-810
Shock	GJB150.18-2009, MIL-STD-810
Hardware interface	2×30 surface mount
Electrical index
Voltage	3.3VDC+5%/-3%
Voltage ripple	100mV p-p(max)
LNA power output	4.75~5.0V, 0~100mA
Power consumption	1.8W (typical)
Function interface
3xUART (LVTTL), 1x1PPS (LVTTL), 1xEvent, 1xSPI, 1x I2C

FAQ:

1. What are the quotation methods?

If you have DHL or Fedex account, we can quote EXW price, otherwise CIF or FOB price.

2. Are there any discounts?

After we submit the sample price, if more quantity is needed, we will quote the bulk price.

3. How long will it take to deliver the goods after placing the order?

For sensors, parts and modules: in stock-one week; no stock-2-4 weeks; For systems, generally, 8-12 weeks.

4. How to deal with the quality problems?

After confirming that the product has quality problems, we will replace it for you free of charge in the shortest possible time.

If interested in Full System Full Frequency Point RTK Positioning Module, pls contact us: info@ericcointernational.com