WTGAHRS from Witmotion is IMU system with built in GPS. The IMU contain 3 Axis gyro, 3axis accelerometer and 3 axis magnetic compass, magnetometer. The GPS is integrated with IMU using kalman filter. It is INS-GPS navigation system, enables to measure attitude angles in Pitch, Roll and Yaw directions (Angles rotation around X, Y, Z axis) and also LAT, LONG and ground speed measurements.

Features

Output TTL .
Input Voltage: 5 - 36V.
The attitude measurement accuracy up to Static 0.05°, Dynamic 0.1°.
INS with built-in GPS
aluminum casing for magnetic interference and shock resistance
External GPS antenna.

Specifications

Accelerometer parameters

Parameters	Condition	Typical value
Measuring range		±16g
Resolution ratio	±16g	0.0005(g/LSB)
RMS noise	Bandwidth=100Hz	0.75~1mg-rms
Static zero drift	Place horizontally	±80mg
Temperature drift	-40°C ~ +85°C	±0.15mg/℃
Bandwidth		5~256Hz

Gyroscope parameters

Parameters	Condition	Typical value
Measuring range		±2000°/s
Resolution ratio	±2000°/s	0.061(°/s)/(LSB)
RMS noise	Bandwidth=100Hz	0.05(°/s)-rms
Static zero drift	Place horizontally	±0.5~1°/s
Temperature drift	-40°C ~ +85°C	±0.02%/℃
Bandwidth		5~256Hz

Pitch and roll angle parameters

Parameters	Condition	Typical value
Measuring range		X:±180°
Measuring range		Y:±90°
Inclination accuracy		0.2°
Resolution ratio	Place horizontally	0.0055°
Temperature drift	-40°C ~ +85°C	±0.5~1°

Heading angle parameter

Parameters	Condition	Typical value
Measuring range		Z:±180°
Heading accuracy	6-axis algorithm, static	0.5°（Dynamic integral cumulative error exists）【1】
Resolution ratio	Place horizontally	0.0055°

GPS Parameter

Index	Technical Parameters
Signal reception	BDS/GPS/QZSS/GLONASS
Cold start TTFF	≤32s
Hot start TTFF	≤1s
Recapture TTFF	≤1s
Cold start capture sensitivity	-148dBm
Hot start capture sensitivity	-156dBm
Recapture sensitivity	-160dBm
Tracking sensitivity	-162dBm
positioning accuracy	<2.5m（CEP50）
Speed measurement accuracy	<0.1m/s（1σ）
Location update rate	5Hz
protocol	NMEA0183
Maximum height	18000m
Maximum speed	515m/s
Maximum acceleration	4g

Witmotion WTGAHRS IMU with Built in GPS Attitude Angles and Position Sensor datasheet.

Witmotion WTGAHRS IMU with Built in GPS Attitude Angles and Position Sensor user manual.

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Witmotion WTGAHRS IMU with Built in GPS Attitude Angles and Position Sensor (Static 0.05°, Dynamic 0.1°)