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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UB4B0

GNSS High Precision Board GNSS High Precision Board

Brief Introduction

UB4B0 is the first system-wide GNSS high-precision board based on new-generation Nebulas-II high-performance SoC chips developed by Unicore Communications, supporting multiple satellite navigation systems and triple-frequency RTK technology including BDS, GPS, GLONASS, Galileo and QZSS, mainly facing to applications of high-precision positioning, navigation and mapping, etc.

Application Field

• Brand-newNebulas-IIhigh-performanceSoCchips
• Independentpositioningofanyrandomsystemand combinedpositioningofmultiplesystems
• Supportsadvancedmulti-pathresistancetechnology andlow-elevationtrackingtechnology
• Centimeter-levelhighprecisionRTKpositioning
• Orientationprecisionsuperiorto0.2degree
• Supportstraditionalaccessincludingserialports, internetaccess,1PPS,externalclockinput,etc.
• SupportsCANandodometerinputinter    face

Product Characteristics

• 432superchannelsandspecificfastacquisitionengines
• SupportsBDS,GPS,GLONASS,GalileoandQZSS
• IndependenttrackingofBDSfrequencypointsignals
• Self-adaptiveanti-narrowbandinterferencecanreach60dB
• OnboardMEMSintegratednavigation
• SupportsspecialtyapplicationsofBSDprecisecodes
• Hardwarecompatiblewiththeinterfaceandsizeofthe mainstreamboard

Data Manual

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Technical Index

Performance Specifications

Channel

432 channels, bases on Nebulas-II chip

Cold Start

<45s

Signal

BDS B1/B2 /B3

GPS L1/L2/L5

GLONASS L1/L2

GALILEO E1/E5a/E5b

QZSS L1/L5

SBAS L1

Hot Start

<10s

Recapture

<1s

Initiation Time

<10s(Typical)

Initiation Reliability

Larger than 99.9%

Differential Data

RTCM 2.X/3.X CMR

Data Format

NMEA-0183,Unicore

Single Point Positioning (RMS)

Plane:1.5m

Data Updating Rate

20Hz

Elevation:3.0m

Positioning Updating Rate

20ns

RTK(RMS)

Plane:10mm+1ppm

TimeAccuracy(RMS)

0.03m/s

Elevation:15mm+1ppm

NetworkProtocol

0.03m/s



Network Protocol

NTRIP、HTTP、FTP

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

PhysicalSpecifications

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

Application Area