UNICORECOMM UM980 Manuale utente

INSTALLATION AND OPERATION

USER MANUAL

WWW.UNICORECOMM.COM

Data subject to change without notice.

UM980

BDS/GPS/GLONASS/Galileo/QZSS

All-constellation Multi-frequency

High Precision RTK Positioning Module

Revision History

Version

Revision History

Date

R1.0

First release

2022-08

Legal right notice

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Communication, Inc. (“Unicore”) referred to herein.

All rights, title and interest to this document and the information such as data, designs,

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trademark, icon, logo, brand name and/or service mark of Unicore products or their

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interests (including but not limited to the aforementioned trademark rights), in whole or

in part.

Disclaimer

The information contained in this manual is provided “as is” and is believed to be true

and correct at the time of its publication or revision. This manual does not represent,

and in any case, shall not be construed as a commitments or warranty on the part of

Unicore with respect to the fitness for a particular purpose/use, the accuracy, reliability

and correctness of the information contained herein.

Information, such as product specifications, descriptions, features and user guide in this

manual, are subject to change by Unicore at any time without prior notice, which may

not be completely consistent with such information of the specific product you

purchase.

UM980 User Manual

Should you purchase our product and encounter any inconsistency, please contact us or

our local authorized distributor for the most up-to-date version of this manual along

with any addenda or corrigenda.

iii

Foreword

This document describes the information of the hardware, package, specification and

the use of Unicore UM980 modules.

Target Readers

This document applies to technicians who possess the expertise on GNSS receivers.

UM980 User Manual 
 
I 
Contents 
1Introduction...............................................................................................1 
1.1 Key Features.....................................................................................................................2 
1.2 Key Specifications ...........................................................................................................2 
1.3 Block Diagram..................................................................................................................5 
2Hardware ...................................................................................................6 
2.1 Dimensions ......................................................................................................................6 
2.2 Pin Definition....................................................................................................................8 
2.3 Electrical Specifications............................................................................................... 12 
2.3.1 Absolute Maximum Ratings......................................................................................12 
2.3.2 Operational Conditions..............................................................................................12 
2.3.3 IO Threshold ...............................................................................................................13 
2.3.4 Antenna Feature.........................................................................................................13 
3Hardware Design .....................................................................................13 
3.1 Antenna Feed Design ................................................................................................... 13 
3.2 Grounding and Heat Dissipation ................................................................................. 15 
3.3 Power-on and Power-off ............................................................................................. 15 
4Production Requirement..........................................................................16 
5Packaging................................................................................................17 
5.1 Label Description.......................................................................................................... 17 
5.2 Product Packaging ....................................................................................................... 17 

UC-00-M32 EN R1.0 Introduction 1

1Introduction

UM980 is a new generation of GNSS high precision RTK positioning module from

Unicore. It supports all constellations and all frequencies, and can simultaneously track

BDS B1I/B2I/B3I/B1C/B2a/B2b*, GPS L1/L2/L5, GLONASS L1/L2, Galileo E1/E5a/E5b,

QZSS L1/L2/L5, and SBAS. The module is mainly used in surveying and mapping,

precise agriculture, UAVs, and autonomous robots.

UM980 is based on NebulasIVTM, a GNSS SoC which integrates the RF-baseband and

high precision algorithm. Besides, the SoC integrates a dual-core CPU, a high speed

floating point processor and an RTK co-processor with 22 nm low power design, and it

supports 1408 super channels. All these above enable stronger signal processing.

With the built-in JamShield adaptive anti-jamming technology, UM980 can fulfill a

strengthening RTK engine solution of multi-mode multi-frequency, which ensures a

good performance on RTK initialization speed, measurement accuracy and reliability

even in the most challenging environments such as urban canyons and tree shades.

Furthermore, UM980 supports abundant interfaces such as UART, I2C*, SPI*, as well as

1PPS, EVENT, CAN*, which meets the customers’ needs in different applications.

Figure 1-1 UM980 Module

* Supports B2b after firmware upgrade

I2C, SPI, CAN: reserved interfaces, not supported currently

UM980 User Manual

2 Introduction UC-00-M32 EN R1.0

1.1 Key Features

Based on the new generation GNSS SoC -NebulasⅣTM, with RF-baseband and high

precision algorithm integrated

17 mm ×22 mm ×2.6 mm, surface-mount device

Supports all-constellation all-frequency on-chip RTK positioning solution

Supports BDS B1I/B2I/B3I/B1C/B2a/B2b*+ GPS L1/L2/L5 + GLONASS L1/L2 +

Galileo E1/E5a/E5b + QZSS L1/L2/L5 + SBAS

All-constellation all-frequency RTK engine and advanced RTK processing

technology

Instantaneous RTK initialization technology

Independent track of each frequency, and 60 dB narrowband anti-jamming

technology

1.2 Key Specifications

Table 1-1 Technical Specifications

Basic Information

Channels

1408 channels, based on NebulasIVTM

Constellations

BDS/GPS/GLONASS/Galileo/QZSS

Frequencies

BDS: B1I, B2I, B3I, B1C, B2a, B2b1

GPS: L1 C/A, L1C1, L2P (Y), L2C, L5

GLONASS: L1, L2

Galileo: E1, E5a, E5b

QZSS: L1, L2, L5

Power

Voltage

+3.0 V ~ +3.6 V DC

Power Consumption

480 mW (Typical)

Supports B2b and L1C after firmware upgrade

UC-00-M32 EN R1.0 Introduction 3

Performance

Positioning Accuracy

Single Point

Positioning2

(RMS)

Horizontal: 1.5 m

Vertical: 2.5 m

DGPS (RMS)2,3

Horizontal: 0.4 m

Vertical: 0.8 m

RTK (RMS)2,3

Horizontal: 0.8 cm + 1 ppm

Vertical: 1.5 cm + 1 ppm

Observation Accuracy (RMS)

BDS

GPS

GLONASS

Galileo

B1I/B1C/L1C1/L1 C/A/G1/E1

Pseudorange

10 cm

B1I/B1C/L1C1/L1 C/A/G1/E1

Carrier Phase

1 mm

B3I/L2P(Y)/L2C/G2 Pseudorange

10 cm

B3I/L2P(Y)/L2C/G2 Carrier Phase

1 mm

B2I/B2a/B2b1/L5/E5a/E5b

Pseudorange

10 cm

B2I/B2a/B2b1/L5/E5a/E5b

Carrier Phase

1 mm

Time Accuracy (RMS)

20 ns

Velocity Accuracy4(RMS)

0.03 m/s

Time to First Fix5(TTFF)

Cold Start < 30 s

Test results may be biased due to atmospheric conditions, baseline length, GNSS antenna type,

multipath, number of visible satellites, and satellite geometry

The measurement uses a 1 km baseline and a receiver with good antenna performance, regardless of

possible errors of antenna phase center offset

Open sky, unobstructed scene, 99% @ static

-130dBm @ more than 12 available satellites

UM980 User Manual

4 Introduction UC-00-M32 EN R1.0

Warm Start < 20 s

Hot Start < 5 s

Initialization Time2

< 5 s (Typical)

Initialization Reliability2

> 99.9%

Data Update Rate

50 Hz6Positioning

Differential Data

RTCM 3.X

Data Format

NMEA-0183, Unicore

Physical Characteristics

Package

54 pin LGA

Dimensions

22 mm × 17 mm × 2.6 mm

Weight

1.88 g ± 0.03 g

Environmental Specifications

Operating Temperature

-40 °C~ +85 °C

Storage Temperature

-55 °C~ +95 °C

Humidity

95% No condensation

Vibration

GJB150.16A-2009, MIL-STD-810F

Shock

GJB150.18A-2009, MIL-STD-810F

Functional Ports

UART × 3

I2C*× 1

SPI* × 1

Slave

CAN*× 1

Shared with UART3

* I2C, SPI, CAN: reserved interfaces, not supported currently

Supports 50 Hz after firmware upgrade

UC-00-M32 EN R1.0 Introduction 5

1.3 Block Diagram

RF in

SAW

Filter

SPIS

RESET_N

PVT、RTK、ERR

Nebulas IV

GNSS

LNA

CLOCK

TCXO

Interface

PMU

I2C

UART1/2/3

UM980

PPS

EVENT

Interface

Figure 1-2 UM980 Block Diagram

RF Part

The receiver gets filtered and enhanced GNSS signal from the antenna via a coaxial

cable. The RF part converts the RF input signals into the IF signals, and converts IF

analog signals into digital signals required for NebulasIVTM chip (UC9810).

NebulasIVTM SoC (UC9810)

NebulasIV (UC9810) is UNICORECOMM’s new generation high precision GNSS SoC with

22 nm low power design, supporting all constellations all frequencies and 1408 super

channels. It integrates a dual-core CPU, a high speed floating point processor and an

RTK co-processor, which can fulfill the high precision baseband processing and RTK

positioning independently.

1PPS

UM980 outputs 1 PPS with adjustable pulse width and polarity.

Event

UM980 provides the Event Mark Input with adjustable frequency and polarity.

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