JPS641982A - Bearing measuring instrument - Google Patents

Bearing measuring instrument

Info

Publication number
JPS641982A
JPS641982A JP15808387A JP15808387A JPS641982A JP S641982 A JPS641982 A JP S641982A JP 15808387 A JP15808387 A JP 15808387A JP 15808387 A JP15808387 A JP 15808387A JP S641982 A JPS641982 A JP S641982A
Authority
JP
Japan
Prior art keywords
bearing
rough
fine
signal
calculator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP15808387A
Other languages
Japanese (ja)
Other versions
JPH077048B2 (en
Inventor
Toshihiro Iwao
Original Assignee
Nec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nec Corp filed Critical Nec Corp
Priority to JP15808387A priority Critical patent/JPH077048B2/en
Publication of JPS641982A publication Critical patent/JPS641982A/en
Publication of JPH077048B2 publication Critical patent/JPH077048B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a stable bearing output by independently extracting rough and fine bearing signals of each other in frequency regions and correcting a phase shift between the rough and fine signals within a range up to half a sector occupying angle.
CONSTITUTION: A rough bearing calculator 7 calculates a rough bearing signal θ1 within the rang of 360° transmitted from a ground stationary station. A fine bearing calculator 8 calculates a fine bearing signal θ'9 for each of N equal sectors into which 360° is divided with a reference bearing signal in common. A bearing calculator 9 receives the output bearing data θ1 and θ'9 of the rough and fine bearing calculators 7 and 8, respectively, and corrects a phase difference between both the bearing signals θ1 and θ'9 within a range up to half a sector occupying angle. Thus, even when a 15Hz amplitude- modulated signal and a 135Hz amplitude-modulated signal are received with phases shifted by a maximum of half the sector occupying angle and, by a maximum of ±19.9° in case of a TACAN instrument, due to the turbulence of a spatial wave, the randomness of a pulse amplitude modulation and the like, a stable bearing output can be obtained.
COPYRIGHT: (C)1989,JPO&Japio
JP15808387A 1987-06-24 1987-06-24 Azimuth measuring device Expired - Fee Related JPH077048B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15808387A JPH077048B2 (en) 1987-06-24 1987-06-24 Azimuth measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15808387A JPH077048B2 (en) 1987-06-24 1987-06-24 Azimuth measuring device

Publications (2)

Publication Number Publication Date
JPS641982A true JPS641982A (en) 1989-01-06
JPH077048B2 JPH077048B2 (en) 1995-01-30

Family

ID=15663922

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15808387A Expired - Fee Related JPH077048B2 (en) 1987-06-24 1987-06-24 Azimuth measuring device

Country Status (1)

Country Link
JP (1) JPH077048B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4948419A (en) * 1986-12-18 1990-08-14 E. I. Du Pont De Nemours And Company Herbicidal pyridine sulfonamides

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101463062B1 (en) * 2012-12-21 2014-11-19 연세대학교 산학협력단 Signal processing device and method, receiver and apparatus for measuring distance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4948419A (en) * 1986-12-18 1990-08-14 E. I. Du Pont De Nemours And Company Herbicidal pyridine sulfonamides

Also Published As

Publication number Publication date
JPH077048B2 (en) 1995-01-30

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees