M68

M68 High Precision Board

Multi-band, multi-constellation satellite receiver, with a variety of data interfaces.

Product Introduction
The M68 is a new multi-band, multi-constellation satellite receiver, with a variety of data interfaces. It is suitable for UAV, automatic robot, precision control, unmanned driving, and other application fields. It can track all global satellite navigation system (GNSS) constellations, support all current satellite signals, with unique AIM+ anti-interference technology. LOCK+ enables tracking during high vibration and impact; APME+ multi-path mitigation separates direct signals from reflections; IONO+ provides advanced protection against ionosphere interference, especially effective in complex environments, and is widely used in the GNSS mass market.
Product Characteristics

• Using M68 high-performance chips
• More than 2 million active correlators
• 448 hardware channels that can simultaneously track all visible satellite signals
• Default navigation update rate: 100Hz; observation update rate: 100Hz
• Ultra-low latency of less than 10 milliseconds
• Stable tracking under high-frequency vibration and fast movement
• Supports GPS, GLONASS, BDS, Galileo, QZSS, Navic, SBAS satellites
• Can be used as a mobile base station
• Integrated TCXO, LNA, and a TF slot of up to 32G
• Small size (71.0×46.0×11.3mm±0.3mm), suitable for compact spaces
• AIM+ interference monitoring and suppression
• IONO+ ionospheric scintillation suppression
• Lock+ excellent seismic robustness, shock resistance
• APME+ multipath suppression technology
• RAIM+ receiver autonomous integrity monitoring
• Supports standard NMEA 0183, SBF, RINEX, RTCM, CMR/CMR+
• Features interference indicator, interference mitigation and spectrum measurement
• High precision positioning and heading output, error ±0.2°
• Supports OSNMA anti-spoofing

Performance Index

M68 High Precision Board - Receiving Satellite (Mosaic-x5 single antenna)

Satellite System	Signals
GPS	L1C/A, L1C, L1PY, L2C, L2P, L5
BDS	B1I, B1C, B2a, B2I, B2b, B3I
GLONASS	L1CA, L2CA, L2P, L3 CDMA
Galileo	E1, E5a, E5b, E5 AltBoc, E6
QZSS	L1C/A, L1C/B, L2C, L5
SBAS	EGNOS, WAAS, GAGAN, MSAS, SDCM (L1, L5)
Extra	L5

Receiving Satellite (Mosaic-H dual antenna)

Satellite System	Signals
GPS	L1C/A, L2P(Y), L2C
BDS	B1, B2I, B3I
GLONASS	L1C/A, L2C/A
Galileo	E1, E5b
QZSS	L1C/A, L1C/B, L2C
SBAS	EGNOS, WAAS, GAGAN, MSAS, SDCM (L1)

Technical Specifications:

Parameter	Value
Elevation accuracy (RTK status)	1cm+1ppm
Horizontal position accuracy	0.6cm+0.5ppm
Tracking and navigation sensitivity	20 dB-Hz
Acquisition sensitivity	33 dB-Hz
Timing accuracy (xPPS)	5 ns
Cold start	45 s
Warm start	≤20 s
Re-acquisition	1 s
Tracking channel	448
Acquisition channel	448
Velocity accuracy	3 cm/s
Directional accuracy (1m antenna pitch)	Heading: 0.15°, Pitch/Roll: 0.25°
Directional accuracy (5m antenna pitch)	Heading: 0.03°, Pitch/Roll: 0.05°
Dynamic limitation	≤ 4 g
Height restriction	18000 m
Speed limit	515 m/s
Refresh frequency	115200-4M bps (default: 115200bps)
Navigation update frequency (orientation)	100 Hz
Navigation update frequency (observed value)	100 Hz
Max update frequency (Standalone, SBAS, DGPS)	50 Hz
Max update frequency (RTK)	20 Hz
Operating voltage/current	3.3V~5.5V / 3.3V@210mA
Weight	16 g
Dimension	71.0×46.0×11.3 mm±0.3 mm
Interface type/number	USB(1), UART(2)
Service temperature	-40℃~85℃
Storage temperature	-55℃~85℃

Product Applications

• Drone applications
• Personnel protection
• Surveying and mapping
• Intelligent logistics scheduling