UC-00-M33 EN R1.0 Introduction 1
1 Introduction
UM981 is a new generation of GNSS high precision RTK/INS integrated positioning
module from Unicore. It supports BDS/GPS/GLONASS/Galileo/QZSS all constellations
and can simultaneously track BDS B1I/B2I/B3I/B1C/B2a/B2b, GPS L1/L2/L5, GLONASS
G1/G2/G3, Galileo E1/E5a/E5b/E6, QZSS L1/L2/L5, NavIC L5 and SBAS. The module is
mainly used in surveying and mapping, intelligent driving
*
, precision agriculture, etc.
UM981 is based on NebulasIV
TM
, 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. It is processed with 22 nm low power
design and supports 1408 channels, being able to output 100 Hz IMU raw data and up to
50 Hz
*
RTK positioning result, providing powerful data processing ability.
With the built-in JamShield anti-jamming technology, UM981 has improved the
performance of RTK solution for multiple modes and frequencies, ensuring fast RTK
initialization speed, high accuracy of measurement and high reliability even in the most
challenging environments such as urban canyons and tree shades.
Furthermore, UM981 supports various interfaces such as UART, I
2
C
*
, SPI
*
, as well as
1PPS, EVENT, CAN
*
, which meets customers’ needs in different applications.
Figure 1-1 UM981 Module
*
The application marked with an asterisk is supported by customized model or firmware.
*
Data update rate can reach 50 Hz after firmware upgrade.
*
I
2
C, SPI, CAN: reserved interfaces, not supported currently
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