| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To perform a highly accurate position detection with a simple and inexpensive configuration. <P>SOLUTION: A position detecting device comprises: a storage section which preliminarily registers a database where three distances to three receivers are vectorized; and a detection processing section which obtains an initial position by searching the database based on distance information output by each receiver and subject to the distance between a transmitter and each receiver and detects a position of a moving portion by solving non-linear equations using the initial position. The detection processing section is configured to include a first Kalman filter to obtain the distance information for searching the database by filtering the distance information and a second Kalman filter for a position state estimation which is dynamically tuned to estimate a position state of the moving portion. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
