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- W2131925869 abstract "Two radar ground speed sensors are used in a land navigation system to provide improved heading by dampening erratic headings and removing misalignments associated with magnetic compasses. Radar ground speed sensors provide vehicle speed without contacting the ground surface and are not subject to errors such as wheel slippage normally associated with wheel encoders or odometers. Differences between the speed sensors provide a measure of angular rate which is input, along with magnetic compass heading, into a heading pre-filter. This provides an intermediate heading improvement by dampening the erratic magnetic compass heading outputs. The average of the speed sensors provide a measure of distance traveled over a sample interval. Distance traveled and the heading pre-filter's output, are used to establish a dead-reckoning navigation solution. This navigation solution is used as a reference state trajectory in a navigation Kalman filter algorithm, processing differential GPS positions as observations, to estimate position, odometer scale factor, and heading misalignment errors. The heading misalignment estimate is added to the heading pre-filter's heading estimate to provide the final heading improvement for an operator or vehicle guidance algorithm." @default.
- W2131925869 created "2016-06-24" @default.
- W2131925869 creator A5012115788 @default.
- W2131925869 date "2002-11-27" @default.
- W2131925869 modified "2023-09-27" @default.
- W2131925869 title "Improved heading using dual speed sensors for angular rate and odometry in land navigation" @default.
- W2131925869 cites W179328894 @default.
- W2131925869 doi "https://doi.org/10.1109/plans.1998.670039" @default.
- W2131925869 hasPublicationYear "2002" @default.
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