Full System Full Frequency Point RTK Positioning Module

ER4B0 Features:
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

Product Details

ER4B0 Full System Full Frequency Point RTK Positioning Module


ER4B0 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. Supports narrowband anti-interference and inertial navigation device integrated navigation. It is mainly targeted at applications such as light robots, GIS information collection, intelligent driving, and drones.

Minimum size full system full frequency RTK module

ER4B0 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

ER4B0 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

ER4B0 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

ER4B0 integrates a 6-axis MEMS chip and uses a mature and reliable U-Fusion integrated navigation algorithm, which effectively solves 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. Can access odometer data * to further improve the accuracy of integrated navigation.


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


Drones, robots

Smart driving test

Precision agriculture


Aisle432 channels based on Nebulas-II chip
FrequencyBDS B1/B2/B3
GPS L1/L2/L5
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
Hot start time<10s
Cold start time<25s
Recapture time< 1s

Initialization time< 5s (typical value)

Initial reliability>99.9%

Differential dataRTCM 2.X/3.X CMR
Data FormatNMEA-0183, Unicore
Data update rate20Hz
Positioning update rate20Hz
Timing accuracy (RMS)20ns
Orientation accuracy (RMS)0.03m/s
Inertial navigation accuracy<5% × driving distance (no GNSS signal)
Observation accuracy (RMS)BDSGPSGLONASSGalileo
B1 / L1 C / A / E1 code10cm10cm10cm10cm
B1 / L1 / E1 carrier phase1mm1mm1mm1mm
B2/L2P(Y)/L2C/E5b code10cm10cm10cm10cm
B2/L2P(Y)/L2C/E5b carrier phase1mm1mm1mm1mm
B3/L5/E5a code10cm10cm10cm10cm
B3/L5/E5a carrier phase1mm1mm1mm1mm
Physical properties 
Operating temperature-55°C~+85°C
Storage temperature-55°C~+95°C
Humidity95% non-condensing
Hardware interface2 × 30 surface mount
Electrical index
Voltage ripple100mV p-p(max)
LNA power output4.75~5.0V,0~100mA
Power consumption1.8W (typical)
Function interface
1xSPI, 1x I2C


1. What is your quotation condition?

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

2.Do you have any discount when procurement? 

We will quote sample price at first and we will quote volume price if you need more quantity.

3.How long is the delivery time?

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

4.How to deal with the quality problems?

If confirmation of product quality problem we can replace it freely for customer in the shortest period.

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

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