Ten years ago low-cost but high-precision positioning options did not exist. But this has changed and the trend will continue. Outlined in this article are 3 options for satisfying positioning requirements using GNSS-based sensors.
Accelerometer: Zero-g Offset Temperature Coefficient
Accelerometer: Zero-g offset Temperature Coefficient Other Names bias thermal drift, offset temperature slope, offset or bias thermal response Examples DeviceNameValueHoneywell HG1120BA50 [https://onav.link/honeywell-hg1120]Bias Repeatability is given over both time and thermal conditionsNACTi Sensors CS-IM100 [https://onav.link/
Accelerometer: Zero-g Offset
Other Names zero-g or 0g offset, bias, bias repeatability, turn-on to turn-on bias, zero-g output Examples DeviceNameValueHoneywell HG1120BA50 [https://onav.link/honeywell-hg1120]Bias Repeatability, at any given time or thermal condition16mg, 1$\sigma$CTi Sensors CS-IM100 [https://onav.link/cti-cs-im100]
Accelerometer: Full Scale Range
Other Names Full scale range (FSR), input range, dynamic range, measurement range, operating range Examples DeviceNameValueHoneywell HG1120BA50 [https://onav.link/honeywell-hg1120] Operating Range-16 to 16gCTi Sensors CS-IM100 [https://onav.link/cti-cs-im100] Rangeselectable ±2, ±4, ±8gThis is one of the more
Inertial Sensor Performance Parameters
Navigation systems rarely have the benefit of directly measuring the information desired. The same can be said about the utility of navigation sensors. The desired state may be the position and terrain slope, but what is measured in simply the
Accelerometer Performance: 3, 6, or 9-Axis Sensors?
Combined Functionality: What do you lose? There is a trend towards combining hardware components and even processors into single chips. This is certainly true for inertial sensors: * 3-axis: accelerometer only * 6-axis: accelerometer, gyro * 9-axis: accelerometer, gyro, magnetometer where each sensor