| 摘要 |
<p>PURPOSE: To obtain an accurate guide signal which has small noise component of an intermediate frequency near the characteristics of a body and small offset noise. CONSTITUTION: A radio wave guide signal 3 output from a radio wave guiding apparatus 1 is removed at the low frequency component by the low-pass filter of a composite signal processor 10. As a result, the signal 3 is cut at the noise component having large intermediate frequency band near the characteristics of the body, and extracted only at the low-frequency component of the excellent characteristics. A light wave guide signal 4 output from a light wave guiding apparatus 2 is input to the high-pass filter of the processor 10, removed at the offset noise, further cut at the high-frequency noise component by the characteristics of the rate gyro by the low-pass filter, and extracted only at the intermediate frequency component of excellent characteristics. The two guide signals having small noise components are combined on the frequency axis by an adder 14, and output as a composite guide signal 15.</p> |
