Alice

Alice GNSS SoC

The SoC has built-in REAL RTK positioning engine and DIST deep-coupled GNSS/INS navigation engine. SAIF（Smart Advanced Interference defense), the high-performance multiple interference suppresion technoloy, is also built in and capable of handling different interferences such as single-frequency, multitone, sweeping, pulse, narrowband with interference-signal ratio of 65 dB.

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Full constellations and full frequencies

1500+ channels (including 750 FuSa channels)

Core Technology

1）Vector tracking loop. Achieve better performance in anti-jamming and anti-spoofing with multi-satellite multi-frequency joint tracking.
2）Multi-correlator based multipath suppression technique. Multi-correlator based parallel correlation methods suppress multipath effect where GNSS signal is reflected off buildings in urban environment, and improve the quality of GNSS observation data.
3）Deeply integrated navigation. Support external input inertial navigation information to assist signal tracking, and provide more robust and accurate observation data in harsh environment.
4）Signal quality monitoring. Monitor real-time tracking loop performance, output the accuracy of GNSS observation.

Performance

Performance		Index
Horizontal Positioning Accuracy	Single Point	1.5m (RMS)
Horizontal Positioning Accuracy	RTK	1cm + 1ppm (RMS)
Vertical Positioning Accuracy	Single Point	2.5m (RMS)
Vertical Positioning Accuracy	RTK	1.5cm + 1ppm (RMS)
Number of Channel		1507
Tracking	L-Band	Supported
	BDS	B1I/B2I/B3I, B1C*/B2a/B2b
	GPS	L1 C/A/L1C/L2/L5
	GLO	L1/L2
	GAL	E1/E5a/E5b/E6
	QZSS	L1/L2/L5/L6 (CLAS)
	NavIC	L5
	SBAS	L1 C/A
Anti-interference	Categories	Multi-tone interference with more than 6 pulses Narrowband interference that is not less than 10% of the signal bandwidth Fast sweep interference
Anti-interference	Interference-Signal Ratio	65 dBc
Observation Measurement Precision	Carrier Phase	≤1mm（RMS）
Observation Measurement Precision	Pseudorange	≤0.1m（RMS）
Sensitivity	Acquisition	-144dBm
Sensitivity	Tracking	-154dBm
Observe Output Rate		50Hz
Re-acqusition Time		≤ 1s
Heading Accuracy		0.2°/m
Timing Accuracy		≤20 ns (RMS)
Velocity Accuracy		0.05m/s (RMS)
Size		6×8mm²
Ambient Temperature		-40°C ~ +105°C
Storage Temperature		-55°C ~ +150°C

Applications

Being widely used in intelligent driving, driver license testing, surveying and mapping, engineering machinery, unmanned systems (UAVs, UAS etc.) and many other fields.