Figure 1
From: A novel autonomous real-time position method based on polarized light and geomagnetic field
Structure of the position device and three left-handed coordinate systems.
Plane A is the baseboard with a 3-aixs compass, see Supplementary Information SI for details. Plane A is made horizontal by adjusting foot pins with the help of the electronic level meter when the device is being used. Two polarized-light sensors or bio-polarization sensors are set on plane B and plane C, respectively. Three left-handed coordinate systems are built. X1 and Y1 are parallel to plane B. X2 and Y2 are parallel to plane C. The intersection lines of the three planes are parallel to each other and perpendicular to X, Y1 and Y2 respectively. The intersection angles of A and B, A and C and B and C are 45°, 45° and 90°, respectively.
