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° |
|
|
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.
