BaseCam GPS IMU v.1.0

GNSS-aided compact AHRS/IMU module developed by BaseCam Electronics company to work as an external IMU sensor with all versions of SimpleBGC32 controllers*. It has much better precision compared to the internal IMU sensor, that allows improving precision of stabilization in demanding applications, where the regular IMU sensor does not work reliably.

How it works: GPS IMU connects to any free UART port of the main controller and provides precise attitude and heading information, that can be used as a reference to correct the internal IMU sensor, solving its common problems: gyroscope drift, an affection of linear accelerations, drift caused by the changes in environmental temperature.

SimpleBGC32 system supports several mounting positions of external IMU sensor: on the stabilized platform, on the gimbal's arms, or on the frame. It allows choosing the most optimal position for a normal work of magnetometer and GNSS receiver, that are very sensitive to the environment.

* Note that currently, GPS IMU module does not replace the regular IMU sensor, though this functionality could be implemented in future.

Features of the Basecam GPS IMU v.1.0 Module

• Integrated GNSS-antenna for a compact size
• Full set of navigation sensors: 3-axis gyroscope, 3-axis accelerometer, 3-axis magnetometer, barometer (altimeter), GNSS receiver (concurrent Galileo, GLONASS, GPS / QZSS)
• Powerful MCU running UKF for a sensor fusion at high rates
• Thermal stabilization helps to keep high precision with the change of temperatures
• Interfaces: UART, USB, CAN¹, I2C²
• Onboard SD card for high-rate data logging with actual date-time information and flexible set of data to log
• Backup battery for GNSS hot start and real-time clock
• Open serial API protocol allows using this sensor in various applications
• Functionality will be constantly improved by firmware
• Cost-effective solution compared to other GNSS-enabled solutions on the market

Calibrations are done for gyroscope bias, accelerometer bias and scale, magnetometer bias and scale at the single working temperature point.

¹ For full support of all functions of the Basecam GPS IMU, it's required to update the main controller's firmware to the version 2.68b7 and above.
² CAN and I2C interfaces are currently not implemented in firmware