Inertial unit boasts smallest, lightest form factor

Claimed to be packaged in the smallest, lightest and lowest power solution available, the ADIS16490 inertial measurement unit (IMU) is launched at the Commercial UAV Show in London, UK, today.

The ADIS16490 is also claimed to have industry leading precision and stability, for use in high-accuracy navigation, guidance, and positioning in applications ranging from aviation and unmanned systems to machine control and precision instrumentation to smart munitions. These were previously impossible due to prohibitive size or cost barriers, says the company.

The IMU delivers tactical grade in-run bias stability of 1.8 degree/hour and 3.6 micro-g – an industry best, says the company. It has the lowest angular random walk (0.09 degree/root-hr) and velocity random walk (0.008m/s/root-hr). There is factory calibration on every device, across temperature, resulting in 24 ppm/degree C (gyro) and 16ppm/ degree C (accelerometer).

There is also a high level of immunity to vibration (0.005 degree/s/g) and shock (2,000g) over the extended temperature range of -40 to +105 degree C.

According to the company, the ADIS16490 represents its most advanced IMU, with high levels of integration for a product that offers the lowest gyro angular random walk and accelerometer velocity random walk, to help eliminate jitter in stabilisation feedback loops. It also maintains low positional drift in navigation applications where low noise, tight alignment, vibration immunity, and wide bandwidth (480Hz gyro, 750Hz accelerator) combine to provide the lowest total error for the most challenging system implementations, says the company.

There are be two further variants sampling by the end of 2016. The ADIS16495 and ADIS16497 IMUs will offer greater dynamic range options.

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