| 摘要 |
PURPOSE:To obtain azimuth angle signals which are corrected of the deviation angle of the terrestrial magnetism by adding an coordinate axis rotating circuit. CONSTITUTION:The orthogonal coordinates consisting of DC signals VX, VY are rotated and are converted to new orthogonal coordinate systems VR, VS. A terrestrial magnetism detector detects the terrestrial magnetism by dividing its horizontal component of force to two orthogonal components. After the output thereof is amplified, it is inputted to a coordinate axis rotating circuit, by which it is converted to new orthogonal coordinate systems. This coordinate axis rotating circuit is constituted of operational amplifiers 30, 31 and resistances 300-306. |
