Title:
PHASE DIFFERENCE FREQUENCY PREPARATION METHOD, PHASE DIFFERENCE FREQUENCY PREPARATION DEVICE, AND OPTICAL WAVE RANGE-FINDER
Document Type and Number:
Japanese Patent JP2018205227
Kind Code:
A
Abstract:
To provide a method and a device that, when generating a signal having a desired phase difference with respect to a reference signal, can prepare the signal having the desired phase difference without separately increasing a generator.SOLUTION: A phase difference frequency preparation method has the steps of: cutting a reference signal s1 serving as a continuous signal of a prescribed frequency into a prescribed time interval at prescribed time by an interrupting signal s2 to prepare a first interruption signal s4; shifting the interrupting signal for time corresponding to π/a (a=a natural number) of a base frequency of the reference signal; cutting the reference signal by the shifted interrupting signal s3 into the prescribed time interval at the prescribed time to prepare a second interruption signal s5; and conducting restoration processing of restoring the second interruption signal by the shifted time.SELECTED DRAWING: Figure 1
Inventors:
KIKUCHI MASAO
SHOJI NAOKI
MATSUMOTO MASAE
SHOJI NAOKI
MATSUMOTO MASAE
Application Number:
JP2017113247A
Publication Date:
December 27, 2018
Filing Date:
June 08, 2017
Export Citation:
Assignee:
TOPCON CORP
International Classes:
G01S7/483; G01C3/06; G01S7/4911; G01S7/4915
Attorney, Agent or Firm:
Shoji Miyoshi