ADIS16300/16305

I tried to do the same - i wanted to build navigation system that can track the car when GPS receiving is jammed. Actually, it should be the anti-theft system for premium class cars.

I found that ADIS16300 had a very heavy drift of the gyro's zero after turning it on for at least 5 minutes. In winter this time increases up to 15 minutes. Actually I was unable to develop the correction procedure for transitional moments. When the temperature moves slowly, one can easily predict zero drift of ADIS16300, but immediately after turning on the unit the internal temperature rises very quickly.

After the stable temperature is reached, the device is precise enough for 10 to 15 minutes of navigation, if the system uses the city map and pulls the calculated track to the roads. If you can't use information from odometer and try to perform double integral to get linear displacement, the typical error value was 50 metres after 5 minutes and 200 metres after 10 minutes. If you has the displacement info from the car wheels, you can track the car between city blocks for at least 30 minutes.

After that the device must upload the track to the host using GPRS or faster mobile data link. To continue tracking, the unit has to acquire the new coords using common GPS receiver after 30 min or its' calculated track seems useless.

I tried to do the same - i wanted to build navigation system that can track the car when GPS receiving is jammed. Actually, it should be the anti-theft system for premium class cars.

I found that ADIS16300 had a very heavy drift of the gyro's zero after turning it on for at least 5 minutes. In winter this time increases up to 15 minutes. Actually I was unable to develop the correction procedure for transitional moments. When the temperature moves slowly, one can easily predict zero drift of ADIS16300, but immediately after turning on the unit the internal temperature rises very quickly.

After the stable temperature is reached, the device is precise enough for 10 to 15 minutes of navigation, if the system uses the city map and pulls the calculated track to the roads. If you can't use information from odometer and try to perform double integral to get linear displacement, the typical error value was 50 metres after 5 minutes and 200 metres after 10 minutes. If you has the displacement info from the car wheels, you can track the car between city blocks for at least 30 minutes.

After that the device must upload the track to the host using GPRS or faster mobile data link. To continue tracking, the unit has to acquire the new coords using common GPS receiver after 30 min or its' calculated track seems useless.