The accuracy of Unicore GNSS receivers ranges all the way from meter, though sub-meter and centimeter, down to the millimeter level.

Using our own unique technology Unicore has successfully developed and fielded series of multi-system, multi-frequency, high-performance System on a Chip (SoC), and a range of high-precision, board-level GNSS receivers and navigation/timing modules.

Applications include Continuously Operating Reference System (CORS) reference stations, survey & mapping, precision agriculture, positioning & heading, vehicle monitoring, autonomous vehicle navigation, and precision timing – along with a number of other

Unicore is a one-stop provider of GNSS SoC chips and GNSS receivers, with extensive experience in the design, verification, development, implementation and production of highly integrated ICs, along with multi-system high-performance GNSS baseband algorit

Unicore Communications, Inc. is a technology company focused on the design & development of highly integrated ICs, algorithms and GNSS receivers.

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UM4B0

BDS/GPS/GLONASS/GALILEO Quad-System High Precision Heading Module

Product Introduction

UM4B0 is the high precision positioning and heading RTK module developed by Unicore Communications, targeting intelligent driving, lawn mower, GIS information collection, etc.

By employing a single UC4C0(432 channel tracking) baseband chip and a single RF chip, using single-sided SMD packaging, UM4B0 can achieve smallest size(30x40mm) among industry high accuracy heading and positioning output. It can simultaneously track BDS B1/B2/B3 + GPS L1/L2/L5 + GLONASS L1/L2+Galileo E1/E5a/E5b.It can maintain excellent application experience even in the most challenging environments such as urban canyons, by deploying anti-interference function block and on board MEMS device.


Product Features


• Support GPSL1/L2/L5 +GLONASSL1/L2+BDS B1/B2/B3+GalileoE1/E5a/E5b

• Based on 432 channel Nebulas II GNSS SoC

• 30*40mm, smallest multi-system multi-frequency high precision module

• 20Hz RTK update rate

• Instant RTK initialization and long-distance RTK

• On board MEMS integrated navigation, support improved U-Fusion integrated navigation algorithm

• Support odometer input and external high-performance IMU interface*

• SMD packaging

Data Manual

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Technical Index

Performance Specifications

Channels

432 channels, based on Nebulas-II chip

BDS B1/B2/B3

GPS L1/L2/L5

GLONASS L1/L2

Galileo E1/E5a/E5b

Initialization time

<10s (typical)

Single point positioning

Horizontal:1.5m

Initialization reliability

>99.9%

Vertical:3.0m

Time to First Fix (TTFF)

Cold start<45s

DGPS(RMS)

Horizontal:0.4m

Reacquisition

<1s

Vertical:0.8m

RTK(RMS)

Horizontal:10mm+1ppm

Correction

RTCM 2.X/3.X CMR

Vertical:15mm+1ppm

Data Output

NMEA-0183,Unicore Binary

Velocity Accuracy (RMS)

0.03m/s

Update Rate

20Hz

Time accuracy (RMS)

20ns

Power Consumption

1.8W

Operating Conditions

Parameter

Symbol

Min.

Typical

Max.

Unit

Power Supply (VCC)

Vcc

3.0

3.3

3.6

V

Peak Current

Iccp



8.8

A

Voltage Input Low

Vin_low_1

-0.3


VCCx 0.3

V

Voltage Input High

Vin_high_1

VCC x 0.7


VCC+ 0.3

V

Voltage Output Low

Vout_low

0


0.45

V

Voltage Output High

Vout_high

VCC-0.45


VCC

V

Noise Figure

Nftot

2.5

3.3

3.5

dB

LNA(Master Antenna)

ANT1_PWR

3.0

5

5.5

V

LNA(Slave Antenna)

ANT2_PWR

3.0

5

5.5

V

Physical Specifications

Size

30×40×4 mm

Weight

8g

Temperature

Working: -40℃~+85℃

Storage: -55℃~+95℃

Humidity

95% No condensation

Vibration

GJB150.16-2009,MIL-STD-810

Shock

GJB150.18-2009,MIL-STD-810

Functional Ports

3x UART, 1xI2C, 1x SPI (LV-TTL)

1x1PPS(LV-TTL)

1xEvent input


Note: * represents optional configuration

Application Area