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.

Home > Product Center > UT4B0


BDS/GPS/GLONASS/Galileo All-Constellation Multi-Frequ

Brief Introduction

UT4B0 is the high precision timing board developed by Unicore Communications, targeting global high precision timing application, e.g. Telecommunication, Power Grid, Banking, Financial transactions (Time Stamps), and scientific applications. By employing a single UC4c0(432 channel tracking) baseband chip and a single RF ch ip. UT 400 can simultaneously track BDS B1/B2/B3 + GPS L1/L2/L5 + GLONASS L1/L2 + Galileo E1/E5a/E5b with high accuracy positioning and timing output.

New Genration Nebulas-II SoC

UT4B0 is based on Unicore's Nebulas-II multi-system, multi-core, high precision SoC. The SoC supports 432 channels. includes a built-in high performance ADC, an anti-interference unit, two precision floating-point processing units, providing powerful GNSS signal precessing capability.

"nanoPPS" ns-level Timing

Based on Nebulas-II's high-performance precessing capability, advanced multi-constellation multi-frequency precessing technology and optimized multi-path mitigation algorithm, the ns-level precision PPS timing is realized on GNSS board for the first time, with deep optimization of radio frequency link and pattern match learning of multi-type clock model.

Adaptive Anti-interference

With special multi-channel Adaptive Anti-jammimg module inside Nebulas-II chip, UT4B0's timing reliability under interference environment is significantly improved.

Key Features

• ns level PPS accuracy

• 66.1×33.8 mm classical size, 2 mm Pitch 2×4 Pin

• Dual-PPS outpit, can be configured separately

• All-constellation all-frequency timing, support narrow band mitigation

• Supports the inquiry of the number of satellites, siganl-to-noise ratio, elevation and so on

• Raw output, support location srttings, and position reporting

• Locating Status Query: unlocated, 2D Location, 3D Location, Survey-In, Location Holding, etc

• Support PPS delay adjustment

Data Manual

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Technical Index


Base on 432-channel Nebulas-II TTFF Cold Start <45s
Frequency BDS B1/B2/B3 Reacquisition <1s
GPS L1/L2/L3 Diiferential RTCM v2.0/3.0/3.2
GLONASS L1/L2 Data Format NMEA-0183, Unicore
Galileo E1/E5a/E5b Update Rate 20Hz
Single Point(RMS) Horrizontal: 1.5m Power <2W
Vertical: 3.0m Power Supply 3.3V±5%
Horrizontal: 0.4m Antenna Input 5V±5%
Vertical: 0.8m Size 66.1mm×31.8mm
Timing 2ns(1б) Interface UART(LV-TTL)×2, 1PPS(LV-TTL)×2, SMB RF Connector
<12ns GPS/UTC (peak to peak)

Application Area