TAU951M

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TAU951M RTK module

TAU951M, 12*16mm

The TAU951M series has two product models:

  • TAU951M-P2,Standard RTK
  • TAU951M-K2,Standard RTK with DR support


The TAU951M-P2 series is a set of GNSS dual-band high-precision RTK navigation and positioning module which is based on the state of art CYNOSURE IV dual-core SoC chip.
It is capable of tracking all global civil navigation systems (BDS, GPS, GLONASS, Galileo, QZSS, NavIC, and SBAS), as well as BDS-3 signals.
The latest dual-core architecture CYNOSURE IV adopts 22 nm process, with built-in dual-core MCU and 8Mbit MRAM, integrating multi-band multi-system GNSS RF and baseband.
This newly designed architecture makes the module achieve centimeter level position accuracy and higher sensitivity,greater for improved jam resistance and multipath,
and provide a highly robust service in complicated environment.
Along with its preeminent performance, the compact size (16.0×12.2×2.4 mm) of TAU951M-P2 series of LCC package with lower consumption makes it suitable for various demands
under different conditions.
It can be widely used in mower, Intelligent transportation, surveying and mapping, unmanned aerial vehicles (UAVs), intelligent agriculture, and other fields.

Features

  • Concurrent reception of multi-band multi-system satellite signals
  • Tracking 128 GNSS signal channels at the same time
  • Support BDS-3 signals: B1C, B2a
  • Support PPP-B2b/PPP/PPP-RTK (upon request)
  • Internal PVT, RTD, and RTK Engine
  • Update rate up to 10 Hz
  • Support A-GNSS
  • Smart jammer detection and suppression
Mode GPS/QZS BDS GLONASS GALILEO NavIC SBAS
L1CA L1C L2C L5 L6 B1I B1C B2I B2b B2a B3I G1 G2 E1 E5a E5b E6 L5 L1
A(default) * (1) - * - * * - - * - * - * * - - (1) *
B * (1) * - - * * * - - - * * * - * - - *
C * * * - - * * - - - - * - * - - - - *

[1] Supported upon request with special firmware

Block diagram

TAU951M block diagram

Specifications

Parameter Specifications
Constellations BDS, GPS, QZSS, GLONASS, Galileo, NavIC, SBAS
Channel 128
Update rates 10Hz
Position accuracy GNSS 1.0m CEP
SBAS <1.0m CEP
RTK 1.0 cm + 1 ppm (H)
2.0 cm + 1 ppm (V)
Velocity & Time accuracy GNSS 0.05 m/s CEP
1PPS 20ns RMS
TTFF Hot start 1s
Cold start 27s
RTK Convergence time <10s
Reliability >99.9%
Sensitivity[1] Cold start -148 dBm
Hot start -155 dBm
Reacquisition -158 dBm
Tracking & navigation -165 dBm
Protocol NMEA-0183
RTCM 2.X, RTCM 3.X
Baudrate 115200 bps, by default
Operating condition Main supply 1.75V to 3.63V
Digital I/O supply 1.75V to 3.63V
Backup supply 1.62V to 3.63V
Power consumption Tracking GNSS 30 mA @ 3.3V
Single system 18 mA @ 3.3V
Standby Data backup 16 uA
RTC 1.4 uA
Serial interface UART 2
SPI[2] 1
I2C[2] 1
Operating limit Velocity 515 m/s
Altitude 18,000m
Environmental conditions Operating temp. -40°C to +85°C
Storage temp. -40°C to +90°C
Humidity 95% RH
Size 16.0×12.2×2.4 mm, 24pin LCC

[1] tested with a good external LNA

[2] Supported upon request with special firmware

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